GMW90 Series User's Guide M211659EN-A

USER'S GUIDE
Vaisala CARBOCAP® Carbon Dioxide,
Temperature, and Humidity Transmitters
GMW90 Series
M211659EN-A
PUBLISHED BY
Vaisala Oyj
P.O. Box 26
FI-00421 Helsinki
Finland
Phone (int.): +358 9 8949 1
Fax:
+358 9 8949 2227
Visit our Internet pages at www.vaisala.com.
© Vaisala 2013
No part of this manual may be reproduced, published or publicly displayed in any form
or by any means, electronic or mechanical (including photocopying), nor may its
contents be modified, translated, adapted, sold or disclosed to a third party without prior
written permission of the copyright holder. Translated manuals and translated portions
of multilingual documents are based on the original English versions. In ambiguous
cases, the English versions are applicable, not the translations.
The contents of this manual are subject to change without prior notice.
This manual does not create any legally binding obligations for Vaisala towards
customers or end users. All legally binding obligations and agreements are included
exclusively in the applicable supply contract or the General Conditions of Sale and
General Conditions of Service of Vaisala.
_________________________________________________________________________________
Table of Contents
CHAPTER 1
GENERAL INFORMATION ............................................................................ 7
About This Manual ................................................................... 7
Contents of This Manual ....................................................... 7
Version Information ............................................................... 8
Related Manuals ................................................................... 8
Documentation Conventions ................................................. 8
Safety ......................................................................................... 9
ESD Protection ...................................................................... 9
Recycling ................................................................................ 10
Regulatory Compliances ....................................................... 10
Patent Notice .......................................................................... 10
Trademarks ............................................................................. 11
Software License .................................................................... 11
Warranty .................................................................................. 11
CHAPTER 2
PRODUCT OVERVIEW ................................................................................ 13
Introduction to GMW90 Series .............................................. 13
GMW90 Series Transmitters ................................................. 14
Output Parameters Explained ............................................... 15
Transmitter parts .................................................................... 16
Decorative Cover Option ....................................................... 19
CHAPTER 3
INSTALLATION ............................................................................................ 21
Configuration Before Installation ......................................... 21
Configuration of Digital Output Models ............................... 21
DIP Switches of Digital Output Models .......................... 22
Addressing with BACnet Protocol .................................. 23
Addressing with Modbus Protocol .................................. 23
Selecting Location ................................................................. 24
Installing the Mounting Base ................................................ 25
Wiring ...................................................................................... 25
Wiring GMW95 .................................................................... 27
Connecting Several Transmitters on Same
RS-485 Line ................................................................... 27
Connecting a Common AC Power Supply to Several
Transmitters ........................................................................ 28
CHAPTER 4
OPERATION ................................................................................................. 29
Display ..................................................................................... 29
Startup Screens .................................................................. 29
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User's Guide _______________________________________________________________________
Measurement Screen .......................................................... 30
Indicators on the Display ..................................................... 31
Service Port ............................................................................. 31
Connecting With an MI70 Indicator ..................................... 31
Connecting With a PC ......................................................... 32
Installing the Driver for the USB Service Cable ............. 32
Terminal Application Settings ......................................... 33
List of Serial Commands ....................................................... 35
Transmitter Information ......................................................... 36
Show Transmitter Information ............................................. 36
Show Transmitter Firmware Version ................................... 36
Show Transmitter Serial Number ........................................ 36
Show Transmitter Status ..................................................... 37
Show Measured Parameters ............................................... 39
Show Command Help.......................................................... 39
Show Command List ........................................................... 40
Measurement Settings ........................................................... 40
Set Environmental Parameters ........................................... 40
Display Settings ...................................................................... 41
Select Parameters to Display .............................................. 41
Serial Line Output Commands .............................................. 42
Start Measurement Output .................................................. 42
Stop Measurement Output .................................................. 42
Output a Reading Once ....................................................... 42
Set Output Interval............................................................... 43
Set Output Format ............................................................... 44
Serial Line Settings ................................................................ 46
Set Remote Echo ................................................................ 46
Set Serial Line Turnaround Delay ....................................... 46
Calibration and Adjustment Commands .............................. 47
Adjust CO2 Measurement .................................................... 47
Show Current CO2 Adjustment ....................................... 47
1-point Adjustment of CO2 Measurement ...................... 48
2-point Adjustment of CO2 Measurement ...................... 48
Clear User Adjustment of CO2 Measurement ................ 49
Adjust Humidity Measurement ............................................ 49
Show Current RH Adjustment ........................................ 49
1-point Adjustment of RH Measurement ........................ 50
2-point Adjustment of RH Measurement ........................ 50
Clear User Adjustment of RH Measurement .................. 51
Adjust Temperature Measurement ...................................... 51
Show Current T Adjustment ........................................... 51
1-point Adjustment of T Measurement ........................... 51
Clear User Adjustment of T Measurement ..................... 52
Enter Calibration and Adjustment Information .................... 52
Other Commands.................................................................... 52
Enable Advanced Serial Commands................................... 52
Reset Transmitter ................................................................ 53
Set BACnet Parameters ...................................................... 53
CHAPTER 5
MAINTENANCE ............................................................................................ 55
Cleaning ................................................................................... 55
Calibration and Adjustment ................................................... 55
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Adjustment Methods ........................................................... 55
Notes for CO2 Adjustment ................................................... 56
Using Calibration Gas vs. Ambient Gas......................... 56
Effect of Temperature on CO2 Measurement ................ 56
Effect of Pressure on CO2 Measurement....................... 57
Notes for T Adjustment ....................................................... 57
Notes for RH Adjustment .................................................... 57
Adjustment Using Display and Trimmers ............................ 58
Adjustment Using a Hand-Held Meter ................................ 59
Adjustment Using a PC ....................................................... 60
Repair Maintenance ............................................................... 61
Replacing the GM10 Module............................................... 62
Replacing the HTM10 Module............................................. 63
CHAPTER 6
TROUBLESHOOTING ................................................................................. 65
Problem Situations ................................................................. 65
Error Messages ...................................................................... 66
Viewing Error Messages on Serial Line .............................. 67
View Currently Active Errors .......................................... 67
View Error Table ............................................................ 67
Reverting to Factory Settings ............................................... 68
Reverting to Factory Settings Using DIP Switches ............. 68
Reverting to Factory Settings Using Service Port ............... 69
Technical Support .................................................................. 69
Product Returns ..................................................................... 69
CHAPTER 7
TECHNICAL DATA ...................................................................................... 71
Specifications ......................................................................... 71
Spare Parts and Accessories ................................................ 73
Dimensions in mm ................................................................. 74
APPENDIX A
BACNET REFERENCE ................................................................................ 75
BACnet Protocol Implementation Conformance
Statement ................................................................................ 75
Transmitter Models and Objects .......................................... 77
Device Object .......................................................................... 78
Carbon Dioxide Object........................................................... 80
Temperature Object ............................................................... 81
Relative Humidity Object ....................................................... 82
Calculated Humidity Objects ................................................ 83
Operation Pressure Object .................................................... 84
Operation Altitude Object ...................................................... 85
BIBBs Supported .................................................................... 86
Application Services Supported ........................................... 87
APPENDIX B
MODBUS REFERENCE ............................................................................... 89
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User's Guide _______________________________________________________________________
List of Figures
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Figure 23
Figure 24
Figure 25
Figure 26
GMW90 with Visible Display and Indicator LEDs ..................... 13
Transmitter Parts - Outside ...................................................... 16
Opening the Transmitter ........................................................... 17
Transmitter Parts – Inside ........................................................ 18
Decorative Cover ...................................................................... 19
DIP Switch Settings of Digital Output Models .......................... 22
Example of Transmitter Addressing ......................................... 23
Selecting Transmitter Location ................................................. 24
Installing the Mounting Base .................................................... 25
Wiring from Behind (Recommended) ....................................... 26
Wiring from Above .................................................................... 26
Wiring GMW95 ......................................................................... 27
Several Transmitters on Same RS-485 Line ............................ 27
Connecting a Common AC Power Supply ............................... 28
GMW95 Startup Screens .......................................................... 29
Measurement Screen – Normal Operation .............................. 30
Measurement Screen – Problem With Humidity
Measurement ............................................................................ 30
PuTTY Terminal Application ..................................................... 34
Effect of Pressure on CO2 Reading ......................................... 57
Trimmer Centering Screen ....................................................... 58
Adjustment Screen ................................................................... 58
Disconnecting the GM10 Module ............................................. 62
Replacing the HTM10 Module .................................................. 63
DIP Switches in Factory Reset Position ................................... 68
GMW90 Series Dimensions ..................................................... 74
Dimensions of the Mounting Base ............................................ 74
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List of Tables
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
Table 9
Table 10
Table 11
Table 12
Table 13
Table 14
Table 15
Table 16
Table 17
Table 18
Table 19
Table 20
Table 21
Table 22
Table 23
Table 24
Table 25
Table 26
Table 27
Table 28
Table 29
Table 30
Table 31
Table 32
Table 33
Table 34
Table 35
Table 36
Table 37
Table 38
Table 39
Table 40
Table 41
Table 42
Table 43
Table 44
Table 45
Table 46
Table 47
Table 48
Manual Revisions ....................................................................... 8
Related Manuals ........................................................................ 8
Applicable Patents .................................................................... 10
GMW90 Series Transmitters .................................................... 14
Parameters Supported by GMW90 Series ............................... 15
Serial Interface Settings ........................................................... 33
Basic Serial Commands ........................................................... 35
Advanced Serial Commands .................................................... 35
FORM Command Parameters ................................................. 45
FORM Command Modifiers...................................................... 45
Troubleshooting Table.............................................................. 65
Error Messages ........................................................................ 66
Performance ............................................................................. 71
Operating Environment ............................................................ 72
Inputs and Outputs ................................................................... 72
Mechanics ................................................................................ 72
GMW90 Series Spare Parts and Accessories ......................... 73
Device Object Properties.......................................................... 78
Carbon Dioxide Object Properties ............................................ 80
Status Flags ............................................................................. 80
Reliability .................................................................................. 80
Event State ............................................................................... 80
Temperature Object Properties ................................................ 81
Status Flags ............................................................................. 81
Reliability .................................................................................. 81
Event State ............................................................................... 81
Relative Humidity Object Properties ........................................ 82
Status Flags ............................................................................. 82
Reliability .................................................................................. 82
Event State ............................................................................... 82
Calculated Humidity Objects .................................................... 83
Calculated Humidity Object Properties .................................... 83
Status Flags ............................................................................. 83
Reliability .................................................................................. 84
Event State ............................................................................... 84
Operation Pressure Object Properties ..................................... 84
Status Flags ............................................................................. 84
Operation Altitude Object Parameters ..................................... 85
Status Flags ............................................................................. 85
BACnet Smart Sensor BIBBs Support ..................................... 86
BACnet Standard Application Services Support ...................... 87
Modbus Functions Supported by GMW90 ............................... 89
GMW90 Modbus Measurement Data Registers ...................... 89
GMW90 Modbus Status Registers (Read-only) ....................... 90
GMW90 Modbus Error Code Bits ............................................. 90
GMW90 Modbus Configuration Parameter Registers .............. 90
GMW90 Modbus Device Identification ..................................... 90
GMW90 Modbus Exception Responses .................................. 90
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Chapter 1 _________________________________________________________ General Information
CHAPTER 1
GENERAL INFORMATION
This chapter provides general notes for the manual and the products that
are covered.
About This Manual
This manual provides information for installing, operating, and
maintaining GMW90 series transmitters. All transmitter models in the
series are covered, which means that some information in the manual is
model-specific.
Contents of This Manual
This manual consists of the following chapters:
- Chapter 1, General Information, provides general notes for the manual
and the products that are covered.
- Chapter 2, Product Overview, introduces the GMW90 series
transmitters.
- Chapter 3, Installation, provides you with information that is intended
to help you install the GMW90 series transmitters.
- Chapter 4, Operation, contains information that is needed to operate
the GMW90 series transmitters.
- Chapter 5, Maintenance, provides information that is needed in basic
maintenance of the GMW90 series.
- Chapter 6, Troubleshooting, describes possible problems, their
probable causes and remedies, and provides contact information for
technical support.
- Chapter 7, Technical Data, provides the technical data of the GMW90
series transmitters.
- Appendix A, BACnet Reference,describes the BACnet protocol
implementation of the GMW90 series digital transmitters.
- Appendix B, Modbus Reference, describes the Modbus protocol
implementation of the GMW90 series digital transmitters.
VAISALA _________________________________________________________________________ 7
User's Guide _______________________________________________________________________
Version Information
Table 1
Manual Code
M211659EN-A
Manual Revisions
Description
November 2013. This manual. First version.
Related Manuals
Table 2
Manual Code
M211511EN
M211476EN
M211606EN
Related Manuals
Manual Name
HMW90 and GMW90 Series Quick Guide for
Digital Output models
Decorative Cover Quick Guide
Decorative Cover Printable Insert
Documentation Conventions
Throughout the manual, important safety considerations are highlighted
as follows:
WARNING
Warning alerts you to a serious hazard. If you do not read and follow
instructions very carefully at this point, there is a risk of injury or even
death.
CAUTION
Caution warns you of a potential hazard. If you do not read and follow
instructions carefully at this point, the product could be damaged or
important data could be lost.
NOTE
Note highlights important information on using the product.
8 ____________________________________________________________________ M211659EN-A
Chapter 1 _________________________________________________________ General Information
Safety
The transmitter delivered to you has been tested and approved as shipped
from the factory. Note the following precautions:
WARNING
Connect only de-energized wires.
CAUTION
If you connect more than one transmitter to a single 24 VAC transformer,
always connect the phase (~) to the +Vs connector in each transmitter.
CAUTION
The trimmers only turn 135 degrees each way, less than half a rotation.
Do not force the trimmer past the stopping point.
CAUTION
Do not modify the unit. Improper modification can damage the product
or lead to malfunction.
ESD Protection
Electrostatic Discharge (ESD) can cause immediate or latent damage to
electronic circuits. Vaisala products are adequately protected against
ESD for their intended use. It is possible to damage the product,
however, by delivering electrostatic discharges when touching,
removing, or inserting any objects inside the equipment housing.
To make sure you are not delivering high static voltages yourself:
- When installing the transmitter, do not touch exposed contacts on the
component board.
- Handle ESD sensitive components on a properly grounded and
protected ESD workbench.
- Always hold component boards by the edges and avoid touching the
component contacts.
VAISALA _________________________________________________________________________ 9
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Recycling
Recycle all applicable material.
Dispose of the unit according to statutory regulations.
Do not dispose of with regular household refuse.
Regulatory Compliances
GMW90 series transmitters comply with the following performance and
environmental test standards:
- EMC-Directive
Conformity is shown by compliance with the following standards:
- EN 61326-1: Electrical equipment for measurement, control, and
laboratory use – EMC requirements – for use in industrial locations.
- EN 550022: Information technology equipment – Radio disturbance
characteristics – Limits and methods of measurement.
Patent Notice
GMW90 series are protected by the following patents and their
corresponding national rights:
Table 3
Applicable Patents
Patent Issued By
United States Patent and Trademark Office
European Patent Office
German Patent and Trade Mark Office
Japan Patent Office
Finnish Patent Office
Patent Number
US 5,827,438
US 6,177,673
EP0776023
EP0922972
69615635
4263285
112005
105598
10 ___________________________________________________________________ M211659EN-A
Chapter 1 _________________________________________________________ General Information
Trademarks
CARBOCAP® is a registered trademark of Vaisala Oyj.
All other trademarks are the property of their respective owners.
Software License
This product contains software developed by Vaisala. Use of the software
is governed by license terms and conditions included in the applicable
supply contract or, in the absence of separate license terms and
conditions, by the General License Conditions of Vaisala Group.
Warranty
Visit our Internet pages for standard warranty terms and conditions:
www.vaisala.com/warranty.
Please observe that any such warranty may not be valid in case of
damage due to normal wear and tear, exceptional operating conditions,
negligent handling or installation, or unauthorized modifications. Please
see the applicable supply contract or Conditions of Sale for details of the
warranty for each product.
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Chapter 2 ___________________________________________________________ Product Overview
CHAPTER 2
PRODUCT OVERVIEW
This chapter introduces the GMW90 series transmitters.
Introduction to GMW90 Series
GMW90 series transmitters are wall-mount transmitters for building
automation applications. GMW90 series transmitters measure carbon
dioxide (CO2) and temperature (T), with the option for humidity
measurements. The CO2 measurement is based on a new generation
CARBOCAP® sensor, which uses a novel, silicon-based microchip
emitter instead of an incandescent light bulb.
All transmitter models in the series share the following common features:
-
Detachable mounting base for easy installation and wiring.
Display (visible or hidden behind the cover).
Sliding cover for accessing maintenance functions.
Adjustment trimmers.
DIP switches for most common configuration tasks.
RS-485 line for temporary service use with hand-held MI70 indicator
or PC.
1310-036
Figure 1
GMW90 with Visible Display and Indicator LEDs
VAISALA ________________________________________________________________________ 13
User's Guide _______________________________________________________________________
GMW90 Series Transmitters
Table 4 below lists the most important differences between the GMW90
series transmitter models. For technical specifications, see Chapter 7,
Technical Data, on page 71.
Table 4
Product Code
GMW95
GMW95D
GMW95R
GMW95RD
GMW90
GMW90 Series Transmitters
Short Description
Carbon dioxide and temperature transmitter with
- digital output (isolated RS-485)
- BACnet MS/TP or Modbus protocol (DIP switch setting)
- display hidden under sliding cover
Carbon dioxide and temperature transmitter with
- digital output (isolated RS-485)
- BACnet MS/TP or Modbus protocol (DIP switch setting)
- visible display
Carbon dioxide, humidity and temperature transmitter with
- digital output (isolated RS-485)
- BACnet MS/TP or Modbus protocol (DIP switch setting)
- display hidden under sliding cover
Carbon dioxide, humidity and temperature transmitter with
- digital output (isolated RS-485)
- BACnet MS/TP or Modbus protocol (DIP switch setting)
- visible display
GMW90 series wall-mount transmitter that has been
customized at Vaisala. Check type label on transmitter body
and terminal label on the mounting base.
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Chapter 2 ___________________________________________________________ Product Overview
Output Parameters Explained
Table 5
Parameters Supported by GMW90 Series
Parameter
Symbol
Carbon
CO2
dioxide
Temperature T
NOTE
Unit(s)
ppm
°C
°F
%
Relative
humidity
RH
Dewpoint
Td
°C
°F
Dewpoint
Tdf
°C
°F
Dewpoint
depression
Wet bulb
temperature
dTd
°C
°F
°C
°F
Absolute
humidity
Mixing ratio
a
Enthalpy
h
Tw
x
g/m3
gr/ft3
g/kg
gr/lb
kJ/kg
btu/lb
Description
Concentration of carbon dioxide
gas.
Temperature in Celsius or
Fahrenheit scale.
Ratio of the partial pressure of
water vapor in the air to the
saturation vapor pressure of air
at the current temperature.
Temperature at which the water
vapor in the air will condense into
water at the current pressure.
Same as Td, except when the
dewpoint is below 0 °C, the
transmitter outputs frostpoint (Tf)
instead of dewpoint.
Difference between ambient
temperature and dewpoint (Tdf).
The minimum temperature that
can be reached by evaporative
cooling in the current conditions.
Quantity of water in a cubic meter
(or cubic foot) of air.
Ratio of water vapor mass per
kilogram (or pound) of dry air.
Sum of the internal energy of a
thermodynamic system.
All of these parameters are visible and selectable using the service port
(serial line and MI70 indicator use) even if your transmitter model does
not have a humidity sensor. However, the transmitter will not show any
measurement results for parameters that it cannot measure or calculate.
VAISALA ________________________________________________________________________ 15
User's Guide _______________________________________________________________________
Transmitter parts
1
2
7
3
8
9
4
10
5
11
6
1310-038
Figure 2
Transmitter Parts - Outside
1 = Locking screw for mounting base.
Not included, M3×6 recommended.
2 = Inlet for CO2 calibration gas.
Use a 3 mm inner diameter silicone tube and 0.4 l/min flow.
3 = Adjustment trimmers.
4 = Service port.
5 = Window for display (only in models where the display is visible)
6 = Locking screw for slide. Not included, M3×6 recommended.
7 = Display.
8 = CO2 level indicator LEDs. Enabled on models with LED option.
Default settings:
Green LED (bottom): lit between 0 ... 800 ppm CO2.
Yellow LED (middle): lit between 800 ... 1200 ppm CO2.
Red LED (top): lit between 1200 ... 5000 ppm CO2,
blinking at > 5000 ppm CO2.
9 = Type label.
10 = Holes for indicator LEDs (only in models with LED option).
11 = Grip for slide.
-
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Chapter 2 ___________________________________________________________ Product Overview
1
1201-005
Figure 3
Opening the Transmitter
1 = Push tab down with a screwdriver to open the transmitter.
To open, use a screwdriver to push down the tab that holds the
transmitter cover and mounting base together. Pull the mounting base
away from the cover, starting from the top.
To close, connect the bottom of the transmitter first, and tilt the top
forward to close the tab. Closing the transmitter starts it up if power is
supplied to the screw terminals.
CAUTION
When opening or closing the transmitter, avoid damaging the transmitter
electronics with the two plastic supports on the mounting base.
VAISALA ________________________________________________________________________ 17
User's Guide _______________________________________________________________________
1
9
2
10
6
11
3
7
8
4
12
13
5
14
15
1310-039
Figure 4
1
2
3
4
5
6
=
=
=
=
=
=
7
8
9
10
11
12
13
14
=
=
=
=
=
=
=
=
15 =
Transmitter Parts – Inside
Mounting base.
Opening for cable (wiring from top).
Terminal label.
Opening for cable (wiring from behind, recommended).
Label for RS-485 baud rate DIP switch settings.
Orientation arrow – should point up after the mounting base has
been installed.
Screw terminals.
Place for zip tie (for cable strain relief)
Transmitter body.
RS-485 termination jumper (connects a 120 Ω resistor).
GM10 module (measures CO2).
DIP switches for common configuration options.
Grip for slide.
TM10 module (measures temperature only) or
HTM10 module (measures humidity and temperature).
HUMICAP® sensor (on models with humidity measurement).
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Chapter 2 ___________________________________________________________ Product Overview
Decorative Cover Option
The decorative cover is an installation accessory for HMW90 and
GMW90 series transmitters that can be used to hide the transmitter from
view. The cover material is transparent polycarbonate, but the idea is to
customize it to match the wall the transmitter is on. There are two easy
ways to change the cover’s appearance:
- Paint the cover to the same color as the wall.
- Insert a piece of wallpaper under the lid.
You can also use the cover as a holder for printed material, for example
an informational sign.
You must remove the sliding cover of the transmitter to install the
decorative cover. Installation instructions are included with the cover.
1
2
3
1310-042
Figure 5
Decorative Cover
1 = Decorative cover lid. If you intend to paint the cover, paint the
outer surface of this part, and leave the other part entirely
unpainted.
2 = Space for wallpaper or printed insert. The decorative cover is
delivered with a quick guide that can be used as a stencil for
cutting the required shape.
3 = Decorative cover base part.
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Chapter 3 ________________________________________________________________ Installation
CHAPTER 3
INSTALLATION
This chapter provides you with information that is intended to help you
install the GMW90 series transmitters.
Configuration Before Installation
If you need to change the settings of the transmitter, it is best to do this
before it has been installed.
Configuration of Digital Output Models
Digital output models of the GMW90 series have the following
configuration interfaces:
- DIP switches on the component board control operating protocol,
serial line settings, and transmitter MAC address. For instructions, see
DIP Switches of Digital Output Models on page 22.
- You can set a jumper for RS-485 line termination on the component
board (120 Ω resistor). For location of the jumper, see Figure 4 on
page 18.
- Other settings are configured in software. You can change most
configuration settings through the service port. For connection
instructions and serial line commands, see Chapter 4, Operation, on
page 29.
- Some configuration actions can be done using the BACnet and
Modbus protocols. See the following appendices for protocol
implementation details:
- Appendix A, BACnet Reference, on page 75.
- Appendix B, Modbus Reference, on page 89.
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DIP Switches of Digital Output Models
Modbus
A
B
Parity Even
Non-Metric
C
128 64 32 16 8
4
2
1
ON
ON
1 2 3 4 5 6 7 8
Baud
Rate
Metric
Parity None
BACnet
1 2 3 4 5 6 7 8
Address
(Binary Weighting)
1209-016
Figure 6
DIP
1
2 ... 4
5
6
DIP Switch Settings of Digital Output Models
Position
Modbus
BACnet
A
B
Off
Off
Off
Off
Off
On
Off
On
On
Off
On
Off
On
On
On
On
Parity Even
Parity None
Non-Metric
Metric
7
8
NOTE
Not used
Not used
C
Off
On
Off
On
Off
On
Off
On
Setting
Modbus protocol in use.
BACnet protocol in use.
Serial line baud rate.
Automatic (default).
4800 (not available with BACnet protocol)
9600
19200
38400
57600
76800
115200
Select 8E1 (parity even) for Modbus protocol.
Select 8N2 (parity none) for Modbus protocol.
Use non-metric units on display and service
port. No effect on Modbus and BACnet.
Use metric units on display and service port.
No effect on Modbus and BACnet.
If the serial line baud rate is set to Automatic, the transmitter attempts to
determine the baud rate of the traffic in the RS-485 network. The
transmitter cycles through all baud rate choices, listening for 10 seconds
at each rate. When it detects valid RS-485 traffic, it remains at the
detected baud rate until it is reset or power cycled.
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Chapter 3 ________________________________________________________________ Installation
Dip switches marked Address (Binary Weighting) set the MAC address
of the GMW90 series digital transmitter. The address is encoded in eight
bit binary form, with each numbered switch representing a single bit. For
example:
128 64 32 16 8
4
2
1
ON
1 2 3 4 5 6 7 8
Binary: 10100001
= Decimal: 161
(128 + 32 + 1)
1209-009
Figure 7
Example of Transmitter Addressing
Addressing with BACnet Protocol
BACnet MS/TP MAC address range is 0 … 255. The transmitter is a
BACnet MS/TP master if address is below 128. Otherwise the transmitter
is a slave.
Addressing with Modbus Protocol
Transmitter is always a Modbus slave. MAC Address range for Modbus
slaves is 1 … 247.
VAISALA ________________________________________________________________________ 23
User's Guide _______________________________________________________________________
Selecting Location
The conditions at the location should represent well the area of interest.
Do not install the transmitter on the ceiling. Avoid placing the transmitter
near heat and moisture sources, close to the discharge of the supply air
ducts, and in direct sunlight.
1111-070
Figure 8
Selecting Transmitter Location
Use the mounting holes to attach the mounting base securely. Use at least
two screws (not included, max screw diameter 4 mm). Remember to
leave sufficient clearance below the transmitter to operate the slide. For
mounting dimensions, see section Dimensions in mm on page 74.
NOTE
When bringing a cable through the wall, note that the hole may also
supply air from outside the room into the transmitter. This may affect the
measurement readings. For example, fresh concrete binds CO2 and may
cause low readings, especially in new buildings. Seal the cable opening if
necessary.
24 ___________________________________________________________________ M211659EN-A
Chapter 3 ________________________________________________________________ Installation
Installing the Mounting Base
Use the mounting holes to attach the mounting base securely. Use at least
two screws (not included). The arrow on the mounting base must point
straight up after installation. Proper orientation is important: air must
flow through the vents on the bottom and top.
1310-043
Figure 9
Installing the Mounting Base
Wiring
Connect the wiring to the screw terminals on the mounting base. The
supply voltage and terminal assignments are model-specific. Max wire
size 2 mm2 (AWG14).
You can bring the cable to the housing from above or from
behind (recommended). If you are wiring a GMW90 series transmitter
from above, note that the GM10 module takes up significant space inside
the transmitter. To make sure there is enough space to close the
transmitter, use a < Ø 5 mm cable, and route it from the left side of the
mounting base. See Figure 11 on page 26.
After completing the wiring, connect the transmitter body over the
mounting base. Note that mounting bases are model-specific.
WARNING
Connect only de-energized wires.
VAISALA ________________________________________________________________________ 25
User's Guide _______________________________________________________________________
1310-044
Figure 10
Wiring from Behind (Recommended)
1310-045
Figure 11
Wiring from Above
26 ___________________________________________________________________ M211659EN-A
Chapter 3 ________________________________________________________________ Installation
Wiring GMW95
The RS-485 line of the transmitter is isolated from the power supply. A
separate ground reference terminal (GND) is provided for the RS-485
connection.
If you are using a shielded cable, you can use the Shld terminal to hold
the exposed part of the shield. Note that the Shld terminal is floating
(not electrically connected).
Shld GND D- D+ -Vs +Vs
Power supply
+ 18 ... 35 VDC
- or 24 VAC ±20%
RS-485
1209-014
Figure 12
Wiring GMW95
Connecting Several Transmitters on Same RS-485
Line
Set the RS-485 termination jumper to “ON” on the transmitter that is at
the end of the line. This terminates the line with a 120 Ω resistor. For
location of the jumper, see section Transmitter Parts - Inside on page 6.
Connect the cable shield to ground on the building controller side.
Transmitter
Building controller
Power
supply
+Vs
-Vs
RS-485:
D+
BACnet or
MODBUS
master
DGND
SHIELD
Transmitter
Transmitter
+Vs
+Vs
+Vs
-Vs
-Vs
-Vs
D+
D+
D+
D-
D-
D-
GND
GND
GND
Shld
Shld
Shld
Connect shield on controller side
Set RS-485
termination jumper
1209-015
Figure 13
Several Transmitters on Same RS-485 Line
VAISALA ________________________________________________________________________ 27
User's Guide _______________________________________________________________________
Connecting a Common AC Power Supply
to Several Transmitters
If you are connecting a common 24 VAC power supply to several
transmitters, make sure to connect the same terminal to +Vs and –Vs on
all transmitters. This will avoid a short-circuit through the shared
common line at the controller; see Figure 14 below.
GMW90
24 VAC
Supply
voltage
+Vs
OUT
-Vs
GND
CONTROLLER
Signal
output
GMW90
Supply
voltage
+Vs
OUT
-Vs
GND
Shared
common
line
Signal
output
1310-046
Figure 14
Connecting a Common AC Power Supply
28 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
CHAPTER 4
OPERATION
This chapter contains information that is needed to operate the GMW90
series transmitters.
Display
Startup Screens
When the transmitter is powered on, it displays a sequence of
information screens. The screens are shown for a few seconds each.
The first screen identifies the transmitter and the connected measurement
modules, and shows if the transmitter is operating normally (status OK)
or if there is an error (status ERROR).
The second screen shows configuration information that is relevant to the
selected communication protocol (BACnet or Modbus).
The third screen shows the currently configured pressure compensation
setting.
1310-049, 1310-047
Figure 15
GMW95 Startup Screens
After the startup screens the transmitter shows the measurement screen. It
shows the measured parameters and currently active indicators.
VAISALA ________________________________________________________________________ 29
User's Guide _______________________________________________________________________
Measurement Screen
Measurement screen shows the measured parameters and currently active
indicators.
1310-040
Figure 16 Measurement Screen – Normal Operation
If there is a problem with measurement, affected readings are replaced
with stars. The alarm indicator and an error message will also appear on
the screen.
1310-041
Figure 17 Measurement Screen – Problem With
Humidity Measurement
30 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Indicators on the Display
Indicator
Position on Screen
Top right
Top left
Bottom left
Meaning
Communication arrows. Down arrow is
shown when transmitter detects valid traffic
on the RS-458 line. Up arrow is shown when
transmitter is transmitting to the RS-485 line.
MI70 connection indicator. Is shown when an
MI70 Indicator is connected to the service
port.
Alert indicator and error text. Is shown if an
error is active. The error message is
written after the indicator. See section
Error Messages on page 66.
Service Port
You can connect to the service port on the GMW90 series transmitters
using a PC or an MI70 indicator. The MI70 indicator is the hand-held
display device that is included with, for example, the Vaisala
CARBOCAP® Hand-Held Carbon Dioxide Meter GM70.
CAUTION
The service port is not galvanically isolated from the rest of the
transmitter electronics. Connect only equipment with a floating power
supply (not grounded) to the service port. If you connect a device that is
grounded to a different potential than the transmitter’s power supply, you
will affect the accuracy of the transmitter’s analog outputs. You may
even affect the transmitter’s functionality or cause damage to the
transmitter.
Connecting With an MI70 Indicator
When connecting using an MI70 indicator, use the connection cable for
GM70 hand-held meter (Vaisala order code 219980). The following
functionality is available when using the MI70:
- Standard MI70 functions such as viewing, logging, and graphs of
measurement results.
- Calibration and adjustment fuctions for the transmitter. For more
information, see section Adjustment Using a on page 59.
- Setting of the pressure compensation value for carbon dioxide and
humidity measurement (Environment menu in the MI70).
VAISALA ________________________________________________________________________ 31
User's Guide _______________________________________________________________________
Connecting With a PC
Connecting with a PC allows you to configure and troubleshoot your
transmitter using serial line commands. For a list of commands, see
section List of Serial Commands on page 35.
When connecting using a PC, use the Vaisala USB cable (Vaisala order
code 219690) and a suitable terminal application:
- If you have not used the Vaisala USB cable before, install the driver
before attempting to use the cable. Refer to section Installing the
Driver for the USB Service Cable on page 32 for detailed instructions.
- For more information on using a terminal application, see section
Terminal Application Settings on page 33.
Installing the Driver for the USB Service Cable
Before taking the USB service cable into use, you must install the
provided USB driver on your PC. When installing the driver, you must
acknowledge any security prompts that may appear.
1.
Check that the USB service cable is not connected. Disconnect the
cable if you have already connected it.
2.
Insert the media that came with the cable, or download the latest
driver from www.vaisala.com.
3.
Execute the USB driver installation program (setup.exe), and
accept the installation defaults. The installation of the driver may
take several minutes.
4.
After the driver has been installed, connect the USB service cable
to a USB port on your PC. Windows will detect the new device,
and use the driver automatically.
5.
The installation has reserved a COM port for the cable. Verify the
port number, and the status of the cable, using the Vaisala USB
Instrument Finder program that has been installed in the
Windows Start menu.
Windows will recognize each individual cable as a different device, and
reserve a new COM port. Remember to use the correct port in the
settings of your terminal program.
There is no reason to uninstall the driver for normal use. However, if you
wish to remove the driver files and all Vaisala USB cable devices, you
can do so by uninstalling the entry for Vaisala USB Instrument Driver
from the Programs and Features menu in the Windows Control Panel.
In Windows XP and earlier Windows versions the menu is called Add or
Remove Programs.
32 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Terminal Application Settings
The serial interface settings of the service port are presented in Table 6
below. The settings are fixed, and cannot be changed by the user.
Table 6
Property
Baud rate
Parity
Data bits
Stop bits
Flow control
Serial Interface Settings
Description / Value
19200
None
8
1
None
The steps below describe how to connect to the transmitter using the
PuTTY terminal application for Windows (available for download at
www.vaisala.com) and a USB serial interface cable:
1.
2.
3.
4.
5.
NOTE
Connect the USB serial interface cable between your PC and the
service port of the transmitter.
Start the PuTTY application.
Select the Serial settings category, and check that the correct COM
port is selected in the Serial line to connect to field.
Note: You can check which port the USB cable is using with the
Vaisala USB Instrument Finder program that has been installed
in the Windows Start menu.
Check that the other serial settings are correct for your connection,
and change if necessary. Flow control should be set to None unless
you have a reason to change it.
Click the Open button to open the connection window and start
using the serial line.
If PuTTY is unable to open the serial port you selected, it will show you
an error message instead. If this happens, restart PuTTY and check the
settings.
6.
You may need to adjust the Local echo setting in the Terminal
category to see what you are typing on the serial line. You must
enable either local echo (on the terminal side) or remote echo (on
the transmitter side, adjustable using the ECHO command).
To access the configuration screen while a session is running, click
the right mouse button over the session window, and select Change
Settings... from the pop-up menu.
VAISALA ________________________________________________________________________ 33
User's Guide _______________________________________________________________________
0807-004
Figure 18
PuTTY Terminal Application
34 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
List of Serial Commands
All commands can be issued either in uppercase or lowercase. In the
command examples, the keyboard input by the user is in bold type.
The notation <cr> refers to pressing the carriage return (Enter) key on
your computer keyboard. Enter a <cr> to clear the command buffer
before starting to enter commands.
Some commands, such as CRH, are not available if the required feature
is not present on the transmitter, or the command is not relevant.
Table 7
Basic Serial Commands
Command
?
CALCS
ECHO
ENV
ERRT
ERRS
FORM [modifier string]
HELP
INTV [0 ... 9999 s/min/h]
PASS [9000]
R
RESET
S
SDELAY [0 ... 255]
SEND
SNUM
STATUS
VERS
Table 8
Command
BACNET
CCO2
CDATE
CRH
CT
CTEXT
DSEL
FRESTORE
Description
Show transmitter information.
Show all measured and calculated parameters.
Show or set remote echo mode.
Show or set environmental parameters.
Show error table.
Show currently active errors.
Show or set output format.
Show list of currently available serial commands.
Set continuous output interval for R command.
Access advanced serial commands.
Start the continuous outputting.
Reset the transmitter.
Stop the continuous outputting.
Show or set serial line turnaround delay in
milliseconds.
Output measurement message once.
Show transmitter serial number.
Show transmitter status.
Show transmitter firmware version.
Advanced Serial Commands
Description
Show or set BACnet parameters.
Calibrate and adjust CO2 measurement.
Show or set calibration date.
Calibrate and adjust RH measurement.
Calibrate and adjust T measurement.
Show or set calibration information.
Select parameters to display on screen.
Restore transmitter to factory settings.
VAISALA ________________________________________________________________________ 35
User's Guide _______________________________________________________________________
Transmitter Information
Show Transmitter Information
The ? command outputs a listing of device information.
?<cr>
Example:
>?
Device
SW version
SNUM
: GMW95R
: 1.1.28.5849
: H2930002
HTM10 module information
Software version
: 0.11.1
SNUM
: H2950107
GM10 module information
Software version
: 1.1.0
SNUM
: J04C030105
Show Transmitter Firmware Version
Use the VERS command to show the transmitter model and firmware
version.
VERS<cr>
Example:
>vers
GMW95R / 1.1.28
Show Transmitter Serial Number
Use the SNUM command to show the transmitter serial number.
SNUM<cr>
Example:
>snum
Serial number
: H2930002
36 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Show Transmitter Status
Use the STATUS command to view detailed information on transmitter
model and configuration.
STATUS [function]<cr>
where
Function = Optional switch to display a more detailed status for
BACnet or Modbus protocol (available on transmitter
models with digital output). Available switches
are -bacnet and –modbus.
Example (display detailed BACnet status):
>status –bacnet
* BACnet module (BACNET) *
BACnet protocol
: active
MAC
: 0 (00h)
Device Instance
: 6 (00000006h)
Name
: GMW95R_ H2930002
Location
: Location
Description
: Description
MAX_MASTER
: 127 (7Fh)
Node type
: Master
Baud setting
: Auto
Current baudrate
: 19200 8N1
Baudrate locked
: No
Baud detection interval: 10 s
DCC
: Communication enabled
Valid frames
: 0
Invalid frames
: 0
Unwanted frames
: 0
Lost tokens
: 0
Failed TX
: 0
VAISALA ________________________________________________________________________ 37
User's Guide _______________________________________________________________________
Example (display full status):
>status
Device Name
Copyright
SW Name
SW Model
SW version
Serial number
Address
:
:
:
:
:
:
:
GMW95R
Copyright Vaisala Oyj 2013
XM90
XM9x
1.1.28.5849
H2930002
0
SUB FUNCTIONS
* Serial Port (COM1) *
Mode
: STOP
* Error Manager (ERR) *
Status
: NORMAL
Active errors
: 0
* MCI communication (MCI) *
Status
: NORMAL
* Measurement module (HTM10) *
Status
: NORMAL
Factory date
: 20130720
* Measurement module (GM10) *
Status
: NORMAL
Calibration
: 20130819
* BACnet module (BACNET) *
BACnet protocol
: active
MAC
: 0 (00h)
Device Instance
: 6 (00000006h)
Name
: GMW95R_ H2930002
Location
: Location
Description
: Description
MAX_MASTER
: 127 (7Fh)
Node type
: Master
Baud setting
: Auto
* MODBUS module (MODBUS) *
MODBUS protocol
: inactive
38 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Show Measured Parameters
Use the CALCS command to list the measurement parameters that are
supported by the GMW90 series transmitters. CO2, RH and T are
measured directly by the transmitter, the rest are calculated based on the
measured values.
CALCS<cr>
Example:
>calcs
RH
T
Tdf
Td
Tw
h
x
a
dTd
CO2
NOTE
-
Relative Humidity
Temperature
Dew/Frost point temperature
Dew point temperature
Wetbulb temperature
Enthalpy
Mixing ratio
Absolute humidity
Dew/frostpoint depression
Filtered CO2
CALCS command also lists all humidity parameters, even if your
transmitter model does not measure humidity.
Show Command Help
To see a short description of an individual command, issue the command
with a question mark as a parameter.
Example:
>calcs ?
Display measured quantities
VAISALA ________________________________________________________________________ 39
User's Guide _______________________________________________________________________
Show Command List
Use the HELP command to list the currently available serial commands.
If the PASS command has not been used, only the basic serial commands
are available.
HELP<cr>
Example (shows basic serial commands, advanced commands are not
enabled here):
>help
?
CALCS
ECHO
ENV
ERRT
ERRS
FORM
HELP
INTV
PASS
R
RESET
SDELAY
SEND
SNUM
STATUS
VERS
Measurement Settings
Set Environmental Parameters
Use the ENV command to set environmental parameters that affect the
measurement. For GMW90 series transmitters you can set the ambient
pressure value that is used for pressure compensation of CO2
measurement and calculated humidity parameters.
ENV [pressure]<cr>
where
pressure = Ambient pressure in hPa.
Example:
>env 1013.3
Pressure (hPa)
: 1013.3
40 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Display Settings
Select Parameters to Display
Use the DSEL command to select the parameters that are displayed on
the transmitter screen. You can select parameters by abbreviation. If only
one parameter is selected, it is shown vertically centered on the
transmitter screen.
DSEL [Q1 Q2 Q3]<cr>
where
Q1
Q2
Q3
= First parameter to show on the screen. Available parameters
are:
CO2
carbon dioxide level
CO2_10
carbon dioxide level in 10 ppm steps
RH
relative humidity
T
temperature
Tdf
dew/frost point temperature
Td
dew point temperature
Tw
wetbulb temperature
h
enthalpy
x
mixing ratio
a
absolute humidity
dTd
dew/frost point depression
= Second parameter to show on the screen. Available
parameters are the same as for Q1.
= Third parameter to show on the screen. Available parameters
are the same as for Q1.
Example (show currently displayed parameters):
>pass
>dsel
Quant
Quant
Quant
9000
1
2
3
: RH
: T
: CO2
Example (change display to only show CO2):
>dsel CO2
OK
VAISALA ________________________________________________________________________ 41
User's Guide _______________________________________________________________________
Serial Line Output Commands
Start Measurement Output
Use the R command to start the continuous outputting of measurement
values as an ASCII text string to the serial line. The format of the
measurement message is set with the FORM command.
R<cr>
Example (measurement message in default format):
>r
RH =
RH =
RH =
RH =
...
26.44
26.45
26.43
26.43
%RH
%RH
%RH
%RH
T
T
T
T
=
=
=
=
24.27
24.27
24.27
24.27
'C
'C
'C
'C
CO2
CO2
CO2
CO2
=
=
=
=
449
449
449
449
ppm
ppm
ppm
ppm
Outputting the results continues in intervals issued with the command
INTV. You can stop the output with the S command. Since the interface
is half-duplex, you must enter the commands when the transmitter is not
outputting.
Stop Measurement Output
You can stop the measurement output with the S command:
S<cr>
Output a Reading Once
Use the SEND command to output a single measurement message.
SEND<cr>
Example:
>send
RH = 26.44 %RH T = 24.27 'C CO2 = 449 ppm
42 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Set Output Interval
Use the INTV command to change the output interval of the
automatically repeating measurement messages. The measurement
messages are repeated in the RUN mode, or after the R command has
been given.
INTV [n xxx]<cr>
where
n
xxx
= time interval, range 0 ... 9999.
= time unit = "S", "MIN", or "H"
The shortest output interval (with n = 0) outputs the measurement
messages as quickly as the transmitter produces them, without additional
delay.
Example:
>intv 1 min
Output interval
: 1 min
VAISALA ________________________________________________________________________ 43
User's Guide _______________________________________________________________________
Set Output Format
Use the serial line command FORM to change the measurement message
sent by the transmitter on the service port. You can freely define the
output message to include the desired parameters, formatting options,
text strings, and additional fields.
FORM [modifier string]<cr>
where
modifier string =
String of parameters and modifiers that defines the
output format, length 1 ... 150 characters.
Maximum length may be shorter when text strings
are used. See Table 9 and Table 10 on page 45,
and examples below.
Command to set default format:
>form /
Example of default output (default depends on transmitter model):
RH =
RH =
RH =
RH =
...
26.44
26.45
26.43
26.43
%RH
%RH
%RH
%RH
T
T
T
T
=
=
=
=
24.27
24.27
24.27
24.27
'C
'C
'C
'C
CO2
CO2
CO2
CO2
=
=
=
=
449
449
449
449
ppm
ppm
ppm
ppm
Command to set output format as CO2 and T with Modulus-256
checksum:
>form "CO2 =" U4 4.0 CO2 "
T =" U3 3.2 t CS2 \r \n
Output example:
CO2
CO2
CO2
CO2
...
=
=
=
=
479
477
475
475
ppm
ppm
ppm
ppm
T
T
T
T
=
=
=
=
24.26
24.27
24.27
24.27
'C
'C
'C
'C
E9
E8
E6
E6
Command to set output format as CO2 and T, with start of text (ASCII
character 002) and end of text (003) ASCII codes, and without line feed
and carriage return at the end:
>form #002 "CO2 =" U4 4.0 CO2 "
T =" U3 3.2 t #003
Output example (ASCII codes not visible here):
CO2 = 817 ppm T = 24.26 'CCO2 = 806 ppm T = 24.27 'CCO2 =
800 ppm T = 24.27 'CCO2 = 788 ppm T = 24.27 'CO2 = 781
ppm T = 24.27 'CCO2 = 768 ppm T = 24.27 'C...
44 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Table 9
FORM Command Parameters
Measured Parameter
Carbon dioxide
Relative humidity
Temperature
Dew/frost point temperature
Dewpoint temperature
Wetbulb temperature
Enthalpy
Mixing ratio
Absolute humidity
Dew/frost point depression
Table 10
Modifier
x.y
#t
#r
#n
""
#xxx
Ux
CS2
CS4
CSX
NOTE
Abbreviation in FORM Command
CO2
RH
T
Tdf
Td
Tw
h
x
a
dTd
FORM Command Modifiers
Description
Length modifier (number of digits and decimal places)
Tabulator
Carriage-return
Line feed
String constant, length 1 ... 15 characters
ASCII code value (decimal) of a special character;
for example, #027 for ESC
Shows the name of the measurement unit using “x” number
of characters. For example, U3 shows the name of the
measurement unit with three characters
Modulus-256 checksum of message sent so far, ASCII
encoded hexadecimal notation
Modulus-65536 checksum of message sent so far, ASCII
encoded hexadecimal notation
NMEA xor-checksum of message sent so far, ASCII encoded
hexadecimal notation
When entering modifiers, you can also use the backslash character “\”
instead of the hash “#”.
VAISALA ________________________________________________________________________ 45
User's Guide _______________________________________________________________________
Serial Line Settings
Set Remote Echo
Use the ECHO command to enable or disable remote echo by the
transmitter.
ECHO [on/off]<cr>
Example:
>echo on
Echo
: ON
Set Serial Line Turnaround Delay
With the SDELAY command you can set the turnaround delay of the
transmitter (time waited before replying to an incoming message) or view
the currently set delay value.
SDELAY [delay]<cr>
where
delay =
Turnaround delay in milliseconds, range 1 … 1000.
Example:
>sdelay 5
COM1 transmit delay : 5
46 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Calibration and Adjustment Commands
The following sections describe the calibration and adjustment
commands of the GMW90 series. For general information on performing
calibration and adjustment on the serial line, see section Adjustment
Using a PC on page 60.
NOTE
You must enable advanced serial commands using the PASS 9000
command before using the calibration and adjustment commands.
Adjust CO2 Measurement
Use the CCO2 command to adjust the carbon dioxide (CO2)
measurement. You can do a 1-point or a 2-point adjustment, or clear the
adjustment information from the GM10 module. Note that the factory
adjustment will remain intact when user adjustment is cleared.
Remember to let the transmitter stabilize in the reference concentration
before entering the adjustment command. Three minutes is typically
enough.
NOTE
Before using the CCO2 command, read section Notes for CO2
Adjustment on page 56.
Show Current CO2 Adjustment
In addition to the user-adjustable offset and gain values, the CCO2
command displays diagnostic information that may be useful to Vaisala
Helpdesk if there is a problem with the adjustment.
CCO2<cr>
Example:
>pass 9000
>cco2
User gain
User offset
CO2 (pre-adjust)
30s delta
30s stddev
Adjustability
:
:
:
:
:
:
1.000
-8.365
464.625
13.904
4.429
CAN_ADJUST
VAISALA ________________________________________________________________________ 47
User's Guide _______________________________________________________________________
1-point Adjustment of CO2 Measurement
The 1-point adjustment adjusts either offset or gain, depending on the
CO2 concentration.
CCO2 [ONE] [x]<cr>
where
x =
The reference CO2 concentration (ppm) that the transmitter
should be showing.
Example:
>pass 9000
>cco2 one 440
OK
2-point Adjustment of CO2 Measurement
The 2-point adjustment adjusts both offset and gain.
CCO2 [LO | HI] [x]<cr>
where
LO = Adjustment point at low concentration (< 700 ppm).
HI = Adjustment point at high concentration (> 700 ppm).
x = The reference CO2 concentration (ppm) that the transmitter
should be showing.
The 2-point correction is not applied immediately – you must use the
CCO2 SAVE command to store your adjustment to the GM10 module.
If you have entered user adjustments using the CCO2 command but do
not wish to commit them, use the CCO2 CANCEL command.
CCO2 [SAVE | CANCEL]<cr>
Example (two point adjustment, low concentration 0 ppm and high
concentration 1000 ppm):
>pass
>cco2
OK
>cco2
OK
>cco2
OK
9000
lo 0
hi 1000
save
48 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Clear User Adjustment of CO2 Measurement
CCO2 [RESET]<cr>
Example:
>pass 9000
>cco2 reset
OK
Adjust Humidity Measurement
Use the CRH command to perform a humidity adjustment of the relative
humidity (RH) measurement. You can do a 1-point or a 2-point
adjustment, or clear the adjustment information from the HTM10
module. Note that the factory adjustment will remain intact when user
adjustment is cleared.
NOTE
Before using the CRH command, read section Notes for RH Adjustment
on page 57.
Show Current RH Adjustment
CRH<cr>
Example (showing default offset and gain):
>pass 9000
>crh
RH Gain
RH Offset
: 1.000
: 0.000
VAISALA ________________________________________________________________________ 49
User's Guide _______________________________________________________________________
1-point Adjustment of RH Measurement
The 1-point adjustment adjusts both offset and gain depending on the
adjustment condition. The same type of adjustment is done when turning
the RH trimmer.
Place the transmitter in the reference condition and allow it to stabilize
before entering the adjustment.
CRH [ONE] [x]<cr>
where
x =
The reference humidity condition (%RH) that the transmitter
should be showing.
Example:
>pass 9000
>crh one 11
OK
2-point Adjustment of RH Measurement
CRH [LO | HI] [x]<cr>
where
LO = Adjustment point at the dry end (low RH).
HI = Adjustment point at the wet end (high RH). The difference
between the two points should be at least 30 %RH.
x = The reference humidity condition (%RH) that the transmitter
should be showing.
The 2-point correction is not applied immediately – you must use the
CRH SAVE command to store your adjustment to the HTM10 module.
If you have entered user adjustments using the CRH command but do not
wish to commit them, use the CRH CANCEL command.
CRH [SAVE | CANCEL]<cr>
Example (two point adjustment, low point 11 %RH and high point
75 %RH):
>pass 9000
>crh lo 11
OK
>crh hi 75
OK
>crh save
OK
50 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Clear User Adjustment of RH Measurement
CRH [RESET]<cr>
Example:
>pass 9000
>crh reset
OK
Adjust Temperature Measurement
Use the CT command to perform an adjustment of the temperature
measurement. You can do a 1-point adjustment or clear the adjustment
information from the HTM10 module. Note that the factory adjustment
will remain intact when user adjustment is cleared.
Show Current T Adjustment
CT<cr>
Example (showing default temperature offset):
>pass 9000
>ct
Temperature offset
: 0.000
1-point Adjustment of T Measurement
Place the transmitter in the reference condition and allow it to stabilize
before entering the adjustment.
CT [x]<cr>
where
x =
The reference temperature (in degrees Celsius) that the
transmitter should be showing.
Example:
>pass 9000
>ct 23
OK
VAISALA ________________________________________________________________________ 51
User's Guide _______________________________________________________________________
Clear User Adjustment of T Measurement
CT [RESET]<cr>
Example:
>pass 9000
>ct reset
OK
Enter Calibration and Adjustment
Information
Use the CTEXT command to store a text string that describes the
calibration and/or adjustment. To enter a text string with spaces, enclose
the string in quotation marks. Use the CDATE to store the date.
CTEXT [text]<cr>
CDATE [YYYY-MM-DD]<cr>
Examples:
>pass 9000
>ctext “adjusted rhlab/Tech021”
“adjusted rhlab/Tech021”
>cdate 2011-12-08
Calibration date
: 2011-12-08
Other Commands
Enable Advanced Serial Commands
Use the PASS command to enable the advanced serial commands.
PASS [passcode]<cr>
where
passcode = Passcode to enable advanced commands is 9000.
Example:
>pass 9000
52 ___________________________________________________________________ M211659EN-A
Chapter 4 _________________________________________________________________ Operation
Reset Transmitter
Use the RESET command to reset the transmitter.
RESET<cr>
Example:
>reset
Resetting
GMW95R / 1.1.28.5849 / XM90
>
Set BACnet Parameters
Use the BACNET command to show or set some of the transmitter’s
BACnet parameters. You can also use the BACNET command to
reinitialize the BACnet stack of the transmitter without having to reset or
power cycle the transmitter.
BACNET [parameter_name [parameter_value]] [reinit]<cr>
where
parameter_name = Name of the BACnet parameter to change.
Available parameters are:
Instance: BACnet instance number. Unsigned value
in range 0 ... 4194302.
Name: BACnet Object_Name shown in the Device
object. String value, no spaces.
Description: BACnet Description shown in the
Device object. String value, no spaces.
Location: BACnet Location shown in the Device
object. String value, no spaces.
Password: Password used in ReinitializeDevice
service. String value, no spaces.
MAX_MASTER: Max_Master parameter in Device
object. Unsigned value, range 1 ... 127.
parameter_value = New value of the parameter. See descriptions above
for allowed values.
reinit
= Reinitializes the BACnet stack. Must be given as the
only argument for the BACNET command.
VAISALA ________________________________________________________________________ 53
User's Guide _______________________________________________________________________
Example (show BACnet parameters):
>pass 9000
>bacnet
Instance
Name
Location
Description
Password
MAX_MASTER
COV_Interval
Autobaud_Interval
:
:
:
:
:
:
:
:
6 (00000006h)
GMW95R_ H2930002
Location
Description
1234
127 (007Fh)
0
10
Example (change Description to main_hall, and reinitialize the BACnet
stack):
>pass 9000
>bacnet description main_hall
Description
: main_hall
>bacnet reinit
Reinitialize signaled to BACnet stack.
54 ___________________________________________________________________ M211659EN-A
Chapter 5 _______________________________________________________________ Maintenance
CHAPTER 5
MAINTENANCE
This chapter provides information that is needed in basic maintenance of
the GMW90 series.
Cleaning
The body of the transmitter can be cleaned by wiping with a moistened
lint-free cloth. Do not use cleaning agents or solvents, or blow
pressurized air into the transmitter housing.
Do not attempt to clean contaminated measurement modules. Dirty
modules should always be replaced with new calibrated modules.
Calibration and Adjustment
GMW90 series transmitters are fully calibrated as shipped from factory.
GMW90 series transmitters have a display that makes it easy to compare
the measured readings against any portable calibration reference. Note
that depending on the ordered configuration, the display may be hidden
under the sliding cover.
Adjustment Methods
You can adjust the measurements in the following ways:
- 1-point adjustment using the trimmers under the sliding cover. See
section Adjustment Using Display and Trimmers on page 58.
- 1-point or 2-point adjustment using the service port. See the following
sections:
- Adjustment Using a Hand-Held Meter on page 59.
- Adjustment Using a PC on page 60.
If adjustment is not enough to restore the measurement accuracy of the
transmitter, you can also replace the measurement modules. See section
Repair Maintenance on page 61.
VAISALA ________________________________________________________________________ 55
User's Guide _______________________________________________________________________
Notes for CO2 Adjustment
1-point CO2 adjustment affects either offset or gain, depending on the gas
concentration. 1-point adjustment below 700 ppm affects the
measurement offset, above 700 ppm it affects the gain.
2-point adjustment will adjust both offset and gain. Choose the
adjustment points as follows:
- For first point, use as low concentration as possible. Preferably 0 ppm,
must be below 700 ppm.
- For second point, use as high concentration as is relevant for your
application. Must be within 700 ... 5000 ppm.
Using Calibration Gas vs. Ambient Gas
You can adjust using a calibration gas with a known concentration
(recommended), or adjust using the ambient gas:
- When using a calibration gas, feed the gas to the adjustment inlet at a
flow rate of 0.3 ... 0.7 L/min. For location of the inlet, see Figure 2 on
page 16. After connecting the gas supply to the field adjustment inlet,
wait for at least three minutes for the reading to stabilize.
- When using ambient gas for adjustment, avoid breathing near the
transmitter during the adjustment.
Regardless of the CO2 reference used, it is important to let the CO2
measurement stabilize before performing the adjustment. Three minutes
is typically enough. Also allow for the stabilization period after
adjustment, before verifying the result.
Effect of Temperature on CO2 Measurement
The device is fully temperature compensated using internal temperature
measurement.
56 ___________________________________________________________________ M211659EN-A
Chapter 5 _______________________________________________________________ Maintenance
Effect of Pressure on CO2 Measurement
Ambient pressure affects the CO2 reading of GMW90. If the ambient
pressure differs from the normal pressure 1013 hPa, the transmitter can
correct the reading if you enter the correct pressure value to the
transmitter using an MI70 indicator or a PC (ENV command).
When adjusting the transmitter, you can also correct your reference
concentration (for example, the value on the gas cylinder label) according
to the graph below.
Figure 19
Effect of Pressure on CO2 Reading
Notes for T Adjustment
Temperature adjustment is always a simple 1-point offset correction.
Notes for RH Adjustment
1-point humidity adjustment affects both offset and gain, depending on
the adjustment condition. In a dry condition (for example, 11 %RH),
offset is adjusted more than gain.
The 1-point humidity adjustment requires that the target condition is at
least 50% of the currently measured value. This prevents the user from
making excessive corrections that are very unlikely to be needed.
VAISALA ________________________________________________________________________ 57
User's Guide _______________________________________________________________________
Adjustment Using Display and Trimmers
CAUTION
The trimmers only turn 135 degrees each way, less than half a rotation.
Do not force the trimmer past the stopping point. If you wish to apply a
greater correction than allowed by the trimmer in a single adjustment,
simply adjust the transmitter again. Corrections applied using the
trimmers are cumulative.
NOTE
User calibration settings (adjustment by trimmers or service port) are
stored in the measurement modules. If you replace a module, there is no
need to undo previous adjustments.
1.
To enter the adjustment screen, open the slide and rotate the CO2,
T, or RH trimmer slightly during normal measurement. If the
trimmer is not centered, you see the trimmer centering screen first.
Simply turn the trimmer to the center and wait for the progress bar
to complete.
1111-075
Figure 20
2.
Trimmer Centering Screen
In the adjustment screen, turn the trimmer to set the desired
correction. To commit the change, stop turning the trimmer and
wait.
1310-092
Figure 21
3.
4.
Adjustment Screen
If you have adjusted the CO2 measurement, wait for three minutes
for the reading to stabilize.
Verify the adjusted measurement from measurement screen.
58 ___________________________________________________________________ M211659EN-A
Chapter 5 _______________________________________________________________ Maintenance
Adjustment Using a Hand-Held Meter
GMW90 transmitters can be adjusted using Vaisala hand-held meters
HM70 (for humidity and temperature) and GM70 (for carbon dioxide and
temperature).
1.
2.
3.
4.
5.
6.
7.
8.
Connect the GMW90 series transmitter to the MI70 indicator using
the connection cable (Vaisala order code 219980). MI70 indicator
is the hand-held display device that is included with HM70 and
GM70.
Depending on the connected devices, you may be prompted by the
to check the currently applied environment settings. Check the
settings when prompted.
In the Functions menu of the MI70 indicator, select Calibrate
XMW9x and press Start.
Confirm Yes. Confirm the automatic power off notification with
Ok.
Select parameter for adjustment: CO2, RH, or T.
Screen shows the measured values and their difference. Press
Adjust to select the Adjustment mode.
Select the desired adjustment type using arrow buttons and press
Select:
- To same as reference: Adjusts the measurement of the GMW90
transmitter to the same reading as the reference that is connected
to the other port. This option is not available if no reference for
the selected parameter is connected to the MI70 indicator.
- 1-point adjustment: Adjusts the measurement of the GMW90
to a reference value that you specify. Follow the instructions
from the HM70 when using this option.
- 2-point adjustment: Adjusts the measurement of the GMW90
at two points to reference values that you specify. This option is
not available when adjusting temperature (T).
- Revert factory calib.: This option removes the currently
applied user adjustment from the measurement module (GM10
module for CO2, HTM10 module for RH or T). Only the
adjustment for the selected parameter is removed.
Complete the selected adjustment by following the instructions
from the MI70 indicator.
VAISALA ________________________________________________________________________ 59
User's Guide _______________________________________________________________________
Adjustment Using a PC
For more detailed instructions on using the Vaisala USB cable and a
terminal application, see section Connecting With a PC on page 32.
For a description of the serial commands, see section Calibration and
Adjustment Commands on page 47.
1.
2.
3.
Connect the GMW90 series transmitter to your PC using the
Vaisala USB cable (order code 219690).
Start a terminal application and open a new session to the service
port of the transmitter. The serial line settings are 19200, N, 8, 1.
Before changing the adjustment, issue the following commands to
see the transmitter’s current adjustment information:
pass 9000
cco2
ct
crh
ctext
cdate
Note that the CRH command is not available if your transmitter
does not support humidity measurement.
4.
5.
6.
7.
Place the entire transmitter in the desired reference condition and
allow the measurement to stabilize. Follow the stabilization from
the serial line (output from the R command) or the display.
You can now use the CCO2, CT, and CRH commands to adjust
the transmitter’s measurement. Refer to the command descriptions
for the available options.
After performing the adjustment, verify from the serial line or the
display that the measurement has been corrected.
After completing the adjustments, you can enter a descriptive text
string in the transmitter’s memory using the CTEXT command,
and note the adjustment date using the CDATE command.
60 ___________________________________________________________________ M211659EN-A
Chapter 5 _______________________________________________________________ Maintenance
Repair Maintenance
If you cannot restore the measurement accuracy of the transmitter by
calibration and adjustment, you can replace the measurement modules
inside the transmitter. Measurement modules are the small component
boards that are connected to the main transmitter component board. See
Figure 4 on page 18.
NOTE
User calibration settings (adjustment by trimmers or service port) are
stored in the module. If you replace the module, you do not need to undo
the previously applied correction.
VAISALA ________________________________________________________________________ 61
User's Guide _______________________________________________________________________
Replacing the GM10 Module
To replace the module:
1.
2.
3.
Disconnect the transmitter body from the mounting base.
Locate the GM10 module on the transmitter. The module is a
separate component board with a golden cuvette that contains the
CARBOCAP® sensor. The module is connected to the main
transmitter board with a connector, and held in place by a plastic
clip on the other side. See Figure 4 on page 18.
Disconnect the module by carefully lifting the module from the
connector side. See Figure 22 below.
1311-137
Figure 22
4.
5.
6.
7.
Disconnecting the GM10 Module
Take the new GM10 module and place it in the hole for the module
so that the plastic clip meets the component board. Then lower the
connector end of the module.
Push down on the module to secure the connector.
Reconnect the transmitter to the mounting base.
Verify that there are no errors when the transmitter starts up. If
there are, see section Error Messages on page 66.
62 ___________________________________________________________________ M211659EN-A
Chapter 5 _______________________________________________________________ Maintenance
Replacing the HTM10 Module
CAUTION
Handle the HTM10 module carefully. When reinstalling the transmitter
body to the mounting base, avoid touching the module or the
HUMICAP® sensor.
To replace the module:
1.
2.
Disconnect the transmitter body from the mounting base.
With your fingers, push apart the two plastic holders that hold the
module. Pull out the module. Keep the module straight while
pulling it out, otherwise the pins may twist in the connector and
damage it.
1112-028
Figure 23
3.
4.
5.
6.
Replacing the HTM10 Module
Take the new module and align the pins to the connector on the
transmitter’s component board.
Push down on the module so that the plastic holders clip into place.
Try not to tilt the module, so that the pins will meet the connector
straight on.
Reconnect the transmitter to the mounting base.
Verify that there are no errors when the transmitter starts up. If
there are, see section Error Messages on page 66.
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64 ___________________________________________________________________ M211659EN-A
Chapter 6 ____________________________________________________________ Troubleshooting
CHAPTER 6
TROUBLESHOOTING
This chapter describes possible problems, their probable causes and
remedies, and provides contact information for technical support.
Problem Situations
Table 11
Troubleshooting Table
Problem
Transmitter reports an
error on the display or
serial line.
Temperature reading
shown by the transmitter
is too high.
Possible Cause
Multiple causes.
Remedy
Refer to Table 12 on
page 66.
Transmitter is installed in
an unsuitable location,
for example, near a heat
source or in sunlight.
Transmitter installed in
improper orientation.
Relocate transmitter.
See section Selecting
Location on page 24.
Reinstall transmitter with
the arrow on the
mounting base pointing
up.
Issue the PASS 9000
Transmitter does not
Advanced commands
recognize a valid serial
not enabled.
command.
command, responds with Remote echo enabled on Issue the ECHO OFF
message
the transmitter, causing command to disable
collisions on the RS-485 remote echo.
FAIL 1: Unknown
line.
command
Intermittent connection
Issue the command
problem between the
again.
transmitter and your
terminal.
Cannot see what you are Serial line echo not
Enable local echo on
typing on the serial line. enabled.
your terminal. See
section Terminal
Application Settings on
page 33.
Unable to complete CO2 Incorrect reference gas
Retry calibration after
adjustment successfully. flow.
reading section
Breathing on transmitter Calibration and
while using ambient gas Adjustment on page 55.
as reference.
Measurement not
stabilized before
attempting adjustment.
Incorrect calibration gas
concentration(s) used for
2-point calibration.
VAISALA ________________________________________________________________________ 65
User's Guide _______________________________________________________________________
Error Messages
Table 12
Error Messages
Error Text
on Display
HTM10 01
Error ID on
Serial Line
23
HTM10 04
21
HTM10 03
4
HTM10 05
22
HMT10 06
42
GM10 01
79
GM10 03
GM10 04
GM10 10
GM10 11
GM10 12
81
82
28
88
89
Internal 1
1
Internal 2
Internal 3
Internal 4
2
3
43
Possible Cause
Remedy
Communication
problem with
HTM10 module.
Problem with
humidity
measurement.
Check that the HTM10
module sits firmly in place.
Remove and reconnect.
- Check for missing or
®
damaged HUMICAP
sensor on the HTM10
module.
- Check for condensation
®
on the HUMICAP
sensor. Wait for the
sensor to dry out.
- Restart the transmitter.
- Replace the module if
unable to remove the
problem.
Internal problem
with HTM10
module.
Communication
problem with
GM10 module.
Internal problem
with GM10
module.
Check that the GM10 module
sits firmly in place. Remove
and reconnect.
- Restart the transmitter.
- Replace the module if
unable to remove the
problem.
Dirty or damaged
GM10 module.
Internal problem
with the
transmitter.
Replace module.
-
Restart the transmitter.
Restore the factory
settings using service
port or DIP switches if
reset does not help.
66 ___________________________________________________________________ M211659EN-A
Chapter 6 ____________________________________________________________ Troubleshooting
Viewing Error Messages on Serial Line
View Currently Active Errors
Use the ERRS command to view currently active errors on the serial
line:
ERRS<cr>
Example:
>errs
NO ERRORS
View Error Table
Use the ERRT command to view the table of possible transmitter errors.
The table includes error ID, error count since last reset, level, current
state, and error text.
Critical errors require a transmitter reset to recover. Other errors may be
recoverable if their cause is removed.
ERRT<cr>
Example:
>errt
Id:
1:
2:
3:
4:
21:
22:
23:
42:
43:
79:
81:
82:
28:
88:
89:
N:
0:
0:
0:
0:
0:
0:
0:
0:
0:
0:
0:
0:
0:
0:
0:
Level:State: Error text
CRITICAL:OFF: FLASH memory corrupted
CRITICAL:OFF: Parameter read (using defaults)
CRITICAL:OFF: Parameter write
CRITICAL:OFF: HTM10 03 FLASH Corrupted
ERROR:OFF: HTM10 04 RH measurement
ERROR:OFF: HTM10 05 T measurement
ERROR:OFF: HTM10 01 Continuous communication failure
ERROR:OFF: HTM10 06 Device Descriptor mismatch
CRITICAL:OFF: Factory parameter memory not consistent
ERROR:OFF: GM10 01 Continuous communication failure
CRITICAL:OFF: GM10 03 FLASH Corrupted
CRITICAL:OFF: GM10 04 MEM I
ERROR:OFF: GM10 10 Device Descriptor mismatch
ERROR:OFF: GM10 11 Module uncalibrated
ERROR:OFF: GM10 12 CO2 measurement
VAISALA ________________________________________________________________________ 67
User's Guide _______________________________________________________________________
Reverting to Factory Settings
GMW90 series transmitters, including factory-customized transmitters,
can be reverted to their original shipping configuration using the DIP
switches or the service port.
Reverting the transmitter to factory settings clears all user configuration
that has been done using the service port. User-made adjustments are also
cleared from the GM10 and HTM10 measurement modules. The factory
calibration will remain.
Reverting to Factory Settings Using DIP
Switches
1.
2.
3.
Disconnect the transmitter cover from the mounting base.
Make a note of the DIP switch positions before changing anything,
so you can restore the positions later.
Set the DIP switches in the leftmost DIP switch bank as shown in
Figure 24 below. Do not move the switches in the other bank.
Modbus
A
B
C
Parity Even
Non-Metric
ON
1 2 3 4 5 6 7 8
Baud
Rate
BACnet
Figure 24
4.
5.
6.
7.
Metric
Parity None
1209-028
DIP Switches in Factory Reset Position
Reconnect the transmitter cover to the mounting base so it powers
up. Check the screen after power-up: when the DIP switches are in
factory reset position, you will see a notification text.
Disconnect the transmitter cover again.
Set the DIP switches to the positions they were before.
Reconnect the transmitter cover to the mounting base. Check the
startup screens to verify the configuration.
68 ___________________________________________________________________ M211659EN-A
Chapter 6 ____________________________________________________________ Troubleshooting
Reverting to Factory Settings Using
Service Port
Use the FRESTORE command to restore the transmitter to factory
settings.
FRESTORE<cr>
NOTE
After using the FRESTORE command, reset the transmitter using the
RESET command.
Example:
>pass 9000
>frestore
Restoring HTM10 factory parameters
HTM10 factory parameters restored
Restoring GM10 factory parameters
GM10 factory parameters restored
Restoring GMW95R factory settings
110/110 parameters restored
>reset
Resetting
GMW95R / 1.1.28.5849 / XM90
>
Technical Support
For technical questions, contact the Vaisala technical support by e-mail at
[email protected]. Provide at least the following supporting
information:
-
Name and model of the product in question.
Serial number of the product.
Name and location of the installation site.
Name and contact information of a technically competent person who
can provide further information on the problem.
Product Returns
If the product must be returned for service, see www.vaisala.com/returns.
Depending on the transmitter condition, Vaisala may replace
measurement modules or the entire transmitter.
For contact information of Vaisala Service Centers, see
www.vaisala.com/servicecenters.
VAISALA ________________________________________________________________________ 69
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70 ___________________________________________________________________ M211659EN-A
Chapter 7 _____________________________________________________________ Technical Data
CHAPTER 7
TECHNICAL DATA
This chapter provides the technical data of the GMW90 series
transmitters.
Specifications
Table 13
Performance
Property
Carbon dioxide
Measurement range
Accuracy
+20 … +30 °C (+ 68 … + 86 °F)
+10 ... +20 °C, +30 ... +40 °C
(+50 ... +68 °F, +86 ... +104 °F)
Stability in typical HVAC applications
Carbon dioxide sensor
Temperature
Measurement range
Accuracy
+20 ... +30 °C (+68 ... +86 °F)
+10 ... +20 °C, +30 ... +40°C
(+50 ... +68 °F, +86 ... +104 °F)
-5 ... +10 °C, +40...+55°C
(+23 ... +50 °F, +104 ... +131 °F)
Temperature sensor
Relative humidity
Measurement range
Accuracy
Temperature range +10 ... +40 °C
(+50 ... +104 °F)
0 ... 60 %RH
60 ...80 %RH
80 ... 95 %RH
Temperature range -5 ... +10 °C,
+40 ... + 55 °C (+23 ... +50 °F,
+104 ... +131°F)
0 ... 60 %RH
60 ...80 %RH
80 ... 95 %RH
Stability in typical HVAC applications
Humidity sensor
*Complies with CEC-400-2008-001-CMF
Description / Value
0 … 5000 ppm
± (30 ppm + 2 % of reading)
± (35 ppm + 2.7 % of reading)
± (45 ppm + 3.8 % of reading)
Total accuracy at room temperature
±75 ppm at 600 and 1000 ppm
including 5 years drift*
®
Vaisala CARBOCAP GM10
-5 ... +55 °C (+23 ... +131 ºF)
±0.5 °C (± 0.9 °F)
±0.6 °C (± 1.08 °F)
±0.8 °C (± 1.44 °F)
Digital temperature sensor
0 ... 95 %RH, non-condensing
±2.5 %RH
±3.0 %RH
±4.0 %RH
±3.5 %RH
±4.0 %RH
±5.0 %RH
±0.5 %RH/year
®
Vaisala HUMICAP 180R
VAISALA ________________________________________________________________________ 71
User's Guide _______________________________________________________________________
Table 14
Operating Environment
Property
Operating temperature range
Operating humidity range
Storage temperature range
Electromagnetic compliance
Table 15
Inputs and Outputs
Property
Digital Models
Supply voltage
Current consumption
(with 120 Ω termination)
Average
Maximum
Power consumption
Output type
RS-485 end of line termination
Supported protocols
BACnet MS/TP
Operating mode
Address range, master mode
Address range, slave mode
Modbus RTU
Address range
Service port
Table 16
Description / Value
-5 ... +55 °C (+23 ... +131 °F)
0 … 95 %RH
Dewpoint <30 °C (+86 °F)
-30 ... +60 °C (-22 ... +140 °F)
EN61326-1, Industrial Environment
Description / Value
18 ... 35 VDC
24 VAC ±20 % 50/60 Hz
20 mA at 24 VDC
50 mA at 24 VDC
< 0.6 W
RS-485 (galvanic isolation, 1.5 kV)
Enable with jumper, 120 Ω
Selectable by DIP switch
Selectable Master/Slave
0 ... 127
128 ... 255
0 ... 247
RS-485 line
for temporary service use
Mechanics
Property
IP class
Standard housing color
Housing material
Output connector
Service port connector
Weight
Description / Value
IP30
White (RAL9003*)
ABS/PC, UL-V0 approved
Screw terminals
2
max. wire size 2 mm (AWG14)
4-pin M8
163 g
*RAL code is only indicative with potential small variations in color shade.
72 ___________________________________________________________________ M211659EN-A
Chapter 7 _____________________________________________________________ Technical Data
Spare Parts and Accessories
Information on spare parts, accessories, and calibration products
is available online at www.vaisala.com and store.vaisala.com.
Table 17
GMW90 Series Spare Parts and Accessories
Description
Carbon dioxide measurement module
Temperature measurement module (for CO2+T models)
Humidity and temperature measurement module
(CO2+T+RH models)
Decorative cover set (10 pcs.)
Connection cable for HM70/GM70 hand-held meter
USB cable for PC connection
Standard white sliding cover, blank
Standard white sliding cover with hole for display
Order Code
GM10SP
TM10SP
HTM10SP
236285
219980
219690
DRW237354SP
DRW237339SP
VAISALA ________________________________________________________________________ 73
User's Guide _______________________________________________________________________
Dimensions in mm
132.7
30
81
1111-061
Figure 25
GMW90 Series Dimensions
59.5
4.4
29.8
34
33.5
27
50
Ø
30.5
1310-037
Figure 26
Dimensions of the Mounting Base
74 ___________________________________________________________________ M211659EN-A
Appendix A _________________________________________________________ BACnet Reference
APPENDIX A
BACNET REFERENCE
This appendix describes the BACnet protocol implementation of the
GMW90 series digital transmitters.
BACnet Protocol Implementation Conformance
Statement
This statement is a part of the BACnet standard and is required for its
use.
Vendor Name:
Vaisala Oyj
Product Name:
XMW90
Product Model Numbers:
GMW95 | GMW95R
Applications Software Version:
1.1.0 and later
Firmware Version:
1.1.0.0 and later
BACnet Protocol Revision:
Version 1, Revision 4
BACnet Standardized Device Profile
(Annex L):
 BACnet Operator Workstation (B-OWS)
 BACnet Building Controller (B-BC)
 BACnet Advanced Application Controller (B-AAC)
 BACnet Application Specific Controller (B-ASC)
 BACnet Smart Sensor (B-SS)
 BACnet Smart Actuator (B-SA)
List of all BACnet Interoperability
Building Blocks Supported
(Annex K):
DS-RP-B, DS-RPM-B, DS-WP-B, DS-COVU-A,
DM-DDB-B, DM-DOB-B, DM-DCC-B, DM-RD-B
See also section BIBBs Supported on
page 86.
Segmentation Capability
 Segmentation Requests Supported
 Segmentation Responses Supported
VAISALA ________________________________________________________________________ 75
User's Guide _______________________________________________________________________
Standard Object Types Supported
 Analog Input
 Analog Output
 Analog Value
 Averaging
 Binary Input
 Binary Output
 Binary Value
 Calendar
 Command
 Device
 Event Enrollment
 File
 Group
 Life Safety Point
 Life Safety Zone
 Loop
 Multistate Input
 Multistate Output
 Multistate Value
 Notification Class
 Program
 Schedule
 Trend Log
Data Link Layer Options
 BACnet Internet Protocol (IP) (Annex J)
 BACnet IP (Annex J), Foreign Device
 ISO 88023, Ethernet (Clause 7)
®
 ANSI/ATA 878.1, 2.5 MB ARCNET network
(Clause 8)
 ANSI/ATA 878.1, RS485 ARCNET network (Clause 8),
baud rates: ________
 Master-Slave/Token-Passing (MS/TP) master
(Clause 9), baud rates:
9600, 19200, 38400, 57600, 76800, 115200
 MS/TP slave (Clause 9), baud rates:
9600, 19200, 38400, 57600, 76800, 115200
 Point-To-Point, EIA 232 (Clause 10),
baud rates: ________
 Point-To-Point, modem (Clause 10),
baud rates: ________
®
 LonTalk protocol (Clause 11), medium: ________
 Other:
76 ___________________________________________________________________ M211659EN-A
Appendix A _________________________________________________________ BACnet Reference
Device Address Binding
Is static device binding supported?
(required for two-way communication
between MS/TP slaves and other
devices)
Networking Options
 Yes
 No
 Router, Clause 6:
 Annex H, BACnet Tunneling Router over IP
 BACnet/IP Broadcast Management Device (BBMD)
Does the BBMD support registrations by
Foreign Devices?
 Yes
Character Sets Supported
 UTF-8 / ANSI X3.4
 No
®
®
 IBM /Microsoft DoubleByte Character Set (DBCS)
 ISO 8859-1
 ISO 10646 Universal Character Set-2 (UCS2)
 ISO 10646 (UCS-4)
 Japanese Industrial Standard (JIS) C 6226
Types of non-BACnet equipment
/network(s) supported:
None
Transmitter Models and Objects
The availability of BACnet objects depends on the transmitter model.
The following objects are present on all GMW90 series models:
- Device object
- Carbon dioxide object
- Temperature object
The following additional objects are present on models that include
relative humidity measurement (for example, GMW95R):
-
Relative humidity object
Calculated humidity objects
Operation pressure object
Operation altitude object
VAISALA ________________________________________________________________________ 77
User's Guide _______________________________________________________________________
Device Object
Note the following:
- Writable means writable via BACnet
- Max_Master and Max_Info_Frames are required in a Master device.
- UV = Configured at Vaisala factory to a unique value. See additional
information after the table.
Table 18
Device Object Properties
Property
Data type (Application
Type)
Object_Identifier
BACnetObjectIdentifier
Object_Name
Object_Type
Vendor_Name
Vendor_Identifier
Model_Name
CharacterString[50]
BACnetObjectType
(ENUMERATED)
BACnetDeviceStatus
(ENUMERATED)
Character String
Unsigned16
CharacterString
Firmware_Revision
CharacterString
N (R)
Application_Software_R
evision
Location
Description
Protocol_Version
Protocol_Revision
Protocol_Services
CharacterString
N (R)
Character String[50]
Character String[50]
Unsigned
Unsigned
BACnetProtocolServices
Supported (BIT STRING)
Y (O)
Y (O)
N (R)
N (R)
N (R)
Protocol_Object_Types
_Supported
BACnetObjectTypesSupp N (R)
orted (BIT STRING)
Object_List
BACnetARRAY[N]of
BACnetObjectIdentifier
System_Status
Writable
(Conforma
nce Code)
Y (R)
Value or Initial Value
Persistence
Nonvolatile
Y (R)
N (R)
02 00 00 00 (hex)
Object Type = 8,
Instance = xxxxxxx UV
"XMW90_Yxxxxxxx" UV
8 (Device Object)
N (R)
0 (Operational)
Volatile
N (R)
N (R)
N (R)
"Vaisala Oyj"
339
Product model.
For example, “GMW95”
X.X.X.X
(BACnet interface)
X.X.X.X
Fixed
Fixed
Nonvolatile
“Location”
“Description”
1
4
Read Property
Read Property Multiple
Write Property
Device Communication
Control
Reinitialize Device
Who-Is
Who-Has
Analog Input
Analog Value
Device
Device Object
AI1 (Carbon Dioxide)
AI2 (Relative Humidity)
AI3 (Temperature)
AI4 (Dewpoint)
AI5 (Dewpoint (Tdf))
AI6 (Dewpoint depression)
AI7 (Wet bulb temperature)
AI8 (Absolute humidity)
AI9 (Mixing ratio)
AI10 (Enthalpy)
AV1 (Pressure)
AV2 (Altitude)
Nonvolatile
Nonvolatile
Fixed
Fixed
Fixed
N (R)
Nonvolatile
Fixed
Fixed
Fixed
Fixed
Fixed
78 ___________________________________________________________________ M211659EN-A
Appendix A _________________________________________________________ BACnet Reference
Property
Data type (Application
Type)
Max_APDU_Length_Ac
cepted
Max_Master
Max_Info_Frames
Segmentation_Supporte
d
APDU_Timeout
APDU_Retries
Device_Address_Bindin
g
Database_Revision
Unsigned16
Unsigned16 (1..127)
Unsigned
BACnetSegmentation
(ENUMERATED)
Unsigned
Unsigned
List of
BACnetAddressBinding
Unsigned
Writable
(Conforma
nce Code)
N (R)
Value or Initial Value
Persistence
244
Fixed
Y (R/O)
N (R/O)
N (R)
127
1
3 (No segmentation)
Nonvolatile
Fixed
Fixed
N (R)
N (R)
N (R)
3000 (ms)
0
NULL
Fixed
Fixed
Fixed
N (R)
0
Volatile
Object_Identifier: Must be unique in BACnet network. As Object
Identifier is 22 bits long its value range is 0 ... 4194303. Each device is
assigned a random value in this range at Vaisala factory.
Object_Name: Must be unique in BACnet network. Default object name
contains the name and serial number of the device. For example,
transmitter model GMW95 with serial number G1234567 receives the
default object name "GMW95_G1234567".
System_Status: System status can be OPERATIONAL (0) or
NON-OPERATIONAL (4). Device goes to NON-OPERATIONAL state
in case of fatal error.
Protocol_Services: Who-Is, I-Am, Who-Has, I-Have and
UnconfirmedCOVNotification services are available only when XMW90
is MS/TP master. Reinitialize Device service must be password
protected. According to BACnet protocol, password is character string
having max 20 characters. Default password is "1234". Password can be
changed through the service port by using the BACNET command. See
section Set BACnet Parameters on page 53.
Database_revision: This is changed during operation according to
section 12.11.35 of ANSI/ASHRAE standard 135-2008.
VAISALA ________________________________________________________________________ 79
User's Guide _______________________________________________________________________
Carbon Dioxide Object
Table 19
Carbon Dioxide Object Properties
Property
Data type
(Application Type)
BACnetObjectIdentifier
Object_Identifier
Object_Name
Object_Type
CharacterString
BACnetObjectType
(ENUMERATED)
Real
Present_Value
Writable
Value or Initial Value
(Conformance Code)
No (R)
00 00 00 01 (hex)
Object Type = 0,
Instance = 1
No (R)
"CO2"
No (R)
0 (Analog Input)
Out_of_Service
COV_Increment
Yes
(When Oos) (R)
CharacterString
No (O)
BACnetEngineeringUnits No (R)
(ENUMERATED)
BACnet Status Flags
Yes (when OoS) (R)
(BIT STRING)
BACnet Reliability
Yes (when OoS) (O)
(ENUMERATED)
BACnetEventState
No (R)
(ENUMERATED)
BOOLEAN
Yes (R)
Real
Yes (O)
Min_Pres_Value
Real
No (O)
Max_Pres_Value
Real
No (O)
Description
Units
Status_Flags
Reliability
Event State
Table 20
FAULT
OVERRIDDEN
OUT_OF_SERVICE
State
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
State
0 NORMAL
1 FAULT
Nonvolatile
Fixed
0.0
Volatile
"Carbon Dioxide"
96 (parts-per-million)
Nonvolatile
Nonvolatile
0 (FAULT == FALSE)
Volatile
0 (NO FAULT
DETECTED)
0 (NORMAL)
Volatile
0 (FALSE)
NaN (COV reporting
disabled)
0.0 (same as limit for
UNDER_RANGE)
2400 (same as limit for
OVER_RANGE)
Volatile
Nonvolatile
Volatile
Nonvolatile
Nonvolatile
Cause
Event State equals 0 (NORMAL)
Event State not 0
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
Always FALSE
Present Value may NOT be written via BACnet
1)
Present Value may be written via BACnet
Reliability
State
0 NO_FAULT_DETECTED
1 NO_SENSOR
2 OVER_RANGE
3 UNDER_RANGE
7 UNRELIABLE_OTHER
Table 22
Nonvolatile
Status Flags
Flag
IN_ALARM
Table 21
Persistence
Cause
No contact to measurement module
CO2 level over BAC_CO2_MAX_VALUE
CO2 level under BAC_CO2_MIN_VALUE
Other measurement error
Event State
Cause
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
80 ___________________________________________________________________ M211659EN-A
Appendix A _________________________________________________________ BACnet Reference
Temperature Object
Table 23
Temperature Object Properties
Property
Data type
(Application Type)
Object_Identifier
BACnetObjectIdentifier
Object_Name
Object_Type
CharacterString
BACnetObjectType
(ENUMERATED)
Real
Present_Value
Writable
(Conformance
Code)
No (R)
No (R)
No (R)
Yes
(When Oos) (R)
No (O)
Yes (R)
Description
Units
CharacterString
BACnetEngineeringUnits
(ENUMERATED)
Status_Flags
Yes (when OoS)
(R)
Yes (when OoS)
(O)
No (R)
Out_of_Service
COV_Increment
BACnet Status Flags (BIT
STRING)
BACnet Reliability
(ENUMERATED)
BACnetEventState
(ENUMERATED)
BOOLEAN
Real
Min_Pres_Value
Real
No (O)
Max_Pres_Value
Real
No (O)
Reliability
Event State
Table 24
FAULT
OVERRIDDEN
OUT_OF_SERVICE
State
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
State
0 NORMAL
1 FAULT
00 00 00 03 (hex)
Object Type = 0,
Instance = 3
"T"
0 (Analog Input)
Nonvolatile
0.0
Volatile
"Temperature"
62 (degrees-Celsius)
Possible units are
C (62) or F (64).
0 (FAULT == FALSE)
Nonvolatile
Nonvolatile
0 (NO FAULT
DETECTED)
0 (NORMAL)
Volatile
0 (FALSE)
NaN (COV reporting
disabled)
-40.0 (same as limit for
UNDER_RANGE)
+80.0 (same as limit for
OVER_RANGE)
Volatile
Nonvolatile
Nonvolatile
Fixed
Volatile
Volatile
Nonvolatile
Nonvolatile
Cause
Event State equals 0 (NORMAL)
Event State not 0
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
Always FALSE
Present Value may NOT be written via BACnet
Present Value may be written via BACnet
Reliability
State
0 NO_FAULT_DETECTED
1 NO_SENSOR
2 OVER_RANGE
3 UNDER_RANGE
7 UNRELIABLE_OTHER
Table 26
Persistence
Status Flags
Flag
IN_ALARM
Table 25
Yes (R)
Yes (O)
Value or Initial Value
Cause
No contact to measurement module
T over +80 °C
T under -40 °C
Other measurement error
Event State
Cause
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
VAISALA ________________________________________________________________________ 81
User's Guide _______________________________________________________________________
Relative Humidity Object
Table 27
Relative Humidity Object Properties
Property
Data type
(Application Type)
Object_Identifier
BACnetObjectIdentifier
Object_Name
Object_Type
CharacterString
BACnetObjectType
(ENUMERATED)
Real
Present_Value
Description
Units
Writable
(Conformance
Code)
No (R)
No (R)
No (R)
Yes
(When Oos) (R)
No (O)
No (R)
Out_of_Service
COV_Increment
CharacterString
BACnetEngineeringUnits
(ENUMERATED)
BACnet Status Flags (BIT
STRING)
BACnet Reliability
(ENUMERATED)
BACnetEventState
(ENUMERATED)
BOOLEAN
Real
Min_Pres_Value
Real
No (O)
Max_Pres_Value
Real
No (O)
Status_Flags
Reliability
Event State
Table 28
Yes (R)
Yes (O)
State
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
FAULT
OVERRIDDEN
OUT_OF_SERVICE
00 00 00 02 (hex)
Object Type = 0,
Instance = 2
"RH"
0 (Analog Input)
Nonvolatile
0.0
Volatile
"Relative Humidity"
29 (percent-relativehumidity)
0 (FAULT == FALSE)
Nonvolatile
Nonvolatile
0 (NO FAULT
DETECTED)
0 (NORMAL)
Volatile
0 (FALSE).
NaN (COV reporting
disabled)
0.0 (same as limit for
UNDER_RANGE)
100 (same as limit for
OVER_RANGE)
Volatile
Nonvolatile
Nonvolatile
Fixed
Volatile
Volatile
Nonvolatile
Nonvolatile
Cause
Event State equals 0 (NORMAL)
Event State not 0
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
Always FALSE
Present Value may NOT be written via BACnet
Present Value may be written via BACnet
Reliability
State
0 NO_FAULT_DETECTED
1 NO_SENSOR
2 OVER_RANGE
3 UNDER_RANGE
7 UNRELIABLE_OTHER
Table 30
State
0 NORMAL
1 FAULT
Persistence
Status Flags
Flag
IN_ALARM
Table 29
Yes (when OoS)
(R)
Yes (when OoS)
(O)
No (R)
Value or Initial Value
Cause
No contact to measurement module
RH over 100%
RH under 0%
Other measurement error
Event State
Cause
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
82 ___________________________________________________________________ M211659EN-A
Appendix A _________________________________________________________ BACnet Reference
Calculated Humidity Objects
Table 31
Calculated Humidity Objects
Instance
4
5
6
7
8
Name
"Td"
"Tdf"
"dTd"
"Tw"
"a"
Description
"Dewpoint"
"Dewpoint"
"Dewpoint depression"
"Wet bulb temperature"
"Absolute humidity"
9
"x"
"Mixing ratio"
10
"h"
"Enthalpy"
Table 32
Calculated Humidity Object Properties
Property
Data type
(Application Type)
Object_Identifier
BACnetObjectIdentifier
Object_Name
Object_Type
CharacterString
BACnetObjectType
(ENUMERATED)
Real
Present_Value
Description
Units
Status_Flags
Reliability
Event State
Out_of_Service
COV_Increment
Table 33
Unit
62/64 (ºC/ ºF)
62/64 (ºC/ ºF)
121/120 (ΔºK/ ΔºF)
62/64 (ºC/ ºF)
217/2000 grams-per-cubic-meter / grains-per-cubic-foot
(Vaisala defined unit)
28/2001 grams-of-water-per-kilogram-dry-air / grains-ofwater-per-pound (Vaisala defined unit)
149/24 kilojoules-per-kilogram-dry-air / btus-per-pound-ofdry-air
Writable
(Conformance
Code)
No (R)
Persistence
00 00 00 xx (hex)
Object Type = 0,
Instance = x
See Table 31 above.
See Table 31 above.
0 (Analog Input)
Nonvolatile
Yes
(When Oos) (R)
No (O)
No (R)
0.0
Volatile
See table above
See table above
Nonvolatile
Nonvolatile
Yes (when OoS)
(R)
Yes (when OoS)
(O)
No (R)
0 (FAULT == FALSE)
Volatile
0 (NORMAL)
Volatile
Yes (R)
Yes (O)
0 (FALSE)
NaN (COV reporting
disabled)
Volatile
Nonvolatile
No (R)
No (R)
CharacterString
BACnetEngineeringUnits
(ENUMERATED)
BACnet Status Flags (BIT
STRING)
BACnet Reliability
(ENUMERATED)
BACnetEventState
(ENUMERATED)
BOOLEAN
Real
Value or Initial Value
Nonvolatile
Fixed
0 (NO FAULT DETECTED) Volatile
Status Flags
Flag
IN_ALARM
FAULT
OVERRIDDEN
OUT_OF_SERVICE
State
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
Cause
Event State equals 0 (NORMAL)
Event State not 0
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
Always FALSE
Present Value may NOT be written via BACnet
Present Value may be written via BACnet
VAISALA ________________________________________________________________________ 83
User's Guide _______________________________________________________________________
Table 34
Reliability
State
0 NO_FAULT_DETECTED
1 NO_SENSOR
2 OVER_RANGE
3 UNDER_RANGE
7 UNRELIABLE_OTHER
Table 35
Cause
No contact to measurement module
RH over 100%
RH under 0%
Other measurement error
Event State
State
0 NORMAL
1 FAULT
Cause
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
Operation Pressure Object
Set current atmospheric pressure to improve the calculation accuracy of
pressure dependent humidity parameters.
Pressure and Altitude objects are linked together. If Present Value in one
object is changed, Present Value in another object is changed
accordingly.
NOTE
Table 36
Operation Pressure Object Properties
Property
Object Identifier
Data type
BACnet Object Identifier
Writable
No
Object Name
Object Type
Present Value
Description
Units
Status Flags
Event State
Character String
BACnet Object Type
Real
Character String
BACnet Engineering Units
BACnet Status Flags
BACnet Event State
No
No
Yes
No
No
No
No
Out of Service
BOOLEAN
No
Table 37
Value or Initial Value
00 80 00 01 (hex)
Object Type = 2,
Instance = 1
"OPER P"
2 (Analog Value)
1013.25
"Operation Pressure"
133 (hectopascals)
0 (FAULT == FALSE)
0 (NORMAL,
does not change)
0 (FALSE)
Status Flags
Flag
IN_ALARM
FAULT
OVERRIDDEN
OUT_OF_SERVICE
State
FALSE
FALSE
FALSE
FALSE
Cause
Always FALSE
Always FALSE
Always FALSE
Always FALSE
84 ___________________________________________________________________ M211659EN-A
Appendix A _________________________________________________________ BACnet Reference
Operation Altitude Object
Set current atmospheric pressure to improve the calculation accuracy of
pressure dependant humidity parameters.
Pressure and Altitude objects are linked together. If Present Value in one
object is changed, Present Value in another object is changed
accordingly.
NOTE
Table 38
Operation Altitude Object Parameters
Property
Object Identifier
Data type
BACnet Object Identifier
Writable
No
Object Name
Object Type
Present Value
Description
Units
Status Flags
Event State
Character String
BACnet Object Type
Real
Character String
BACnet Engineering Units
BACnet Status Flags
BACnet Event State
No
No
Yes
No
Yes
No
No
Out of Service
BOOLEAN
No
Table 39
Value or Initial Value
00 80 00 02 (hex)
Object Type = 2,
Instance = 2
"OPER Altitude"
2 (Analog Value)
0.0
"Operating Altitude"
31 (meters) or 33 (feet)
0 (FAULT == FALSE)
0 (NORMAL, does not
change)
0 (FALSE)
Status Flags
Flag
IN_ALARM
FAULT
OVERRIDDEN
OUT_OF_SERVICE
State
FALSE
FALSE
FALSE
FALSE
Cause
Always FALSE
Always FALSE
Always FALSE
Always FALSE
VAISALA ________________________________________________________________________ 85
User's Guide _______________________________________________________________________
BIBBs Supported
Table 40 below lists all the BIBBs which, per ANSI/ASHRAE Standard 135-2008,
could be supported by a BACnet Smart Sensor (B-ASC). The checked BIBBs are
supported by the device.
Table 40
BACnet Smart Sensor BIBBs Support
Application Service (B-SS)
Data Sharing - Read Property - A
Data Sharing - Read Property - B
Data Sharing - Read Property Multiple - A
Data Sharing - Read Property Multiple - B
Data Sharing - Write Property - A
Data Sharing - Write Property - B
Data Sharing - Write Property Multiple - B
Data Sharing - COV - Unsolicited - A
Data Sharing - COV - Unsolicited - B
Alarm and Event - Notification Internal - B
Alarm and Event - ACK - B
Alarm and Event - Information - B
Alarm and Event - Enrollment Summary - B
Scheduling - External - B
Trending - Viewing and Modifying Trends Internal - B
Trending - Automated Trend Retrieval - B
Device Management - Dynamic Device Binding - A
Device Management - Dynamic Device Binding - B
Device Management - Dynamic Object Binding - A
Device Management - Dynamic Object Binding - B
Device Management - Device Communication Control - B
Device Management - Time Synchronization - B
Device Management - UTC Time Synchronization - B
Device Management - Reinitialize Device - B
Device Management - Backup and Restore - B
Network Management - Connection Establishment - A
Designation
DS-RP-A
DS-RP-B
DS-RPM-A
DS-RPM-B
DS-WP-A
DS-WP-B
DS-WPM-B
DS-COVU-A
DS-COVU-B
AE-N-I-B
AE-ACK-B
AE-INFO-B
AE-ESUM-B
SCHED-E-B
T-VMT-I-B
T-ATR-B
DM-DDB-A
DM-DDB-B
DM-DOB-A
DM-DOB-B
DM-DCC-B
DM-TS-B
DM-UTC-B
DM-RD-B
DM-BR-B
NM-CE-A
Supported


























86 ___________________________________________________________________ M211659EN-A
Appendix A _________________________________________________________ BACnet Reference
Application Services Supported
Table 41 below lists all the BACnet standard application services. The checked
services are supported by the device.
Table 41
Application Service
AcknowledgeAlarm
AddListElement
AtomicReadFile
AtomicWriteFile
ConfirmedCOVNotification
ConfirmedEventNotification
ConfirmedPrivateTransfer
ConfirmedTextMessage
CreateObject
DeleteObject
DeviceCommunicationControl
Disconnect-Connection-To-Network
Establish-Connection-To-Network
GetAlarmSummary
GetEnrollmentSummary
GetEventInformation
I-Am
I-Am-Router-To-Network
I-Could-Be-Router-To-Network
I-Have
Initialize-Routing-Table
Initialize-Routing-Table-Ack
LifeSafetyOperation
ReadProperty
ReadPropertyConditional
ReadPropertyMultiple
ReadRange
ReinitializeDevice
RemoveListElement
SubscribeCOV
SubscribeCOVProperty
TimeSynchronization
UnconfirmedCOVNotification
UnconfirmedEventNotification
UnconfirmedPrivateTransfer
UnconfirmedTextMessage
UTCTimeSynchronization
VT-Close
VT-Data
VT-Open
Who-Has
Who-Is
Who-Is-Router-To-Network
WriteProperty
WritePropertyMultiple
BACnet Standard Application Services Support
Initiates Requests













































Executes Requests








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VAISALA ________________________________________________________________________ 87
User's Guide _______________________________________________________________________
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88 ___________________________________________________________________ M211659EN-A
Appendix B _________________________________________________________ Modbus Reference
APPENDIX B
MODBUS REFERENCE
This appendix describes the Modbus protocol implementation of the
GMW90 series digital transmitters.
Table 42
Modbus Functions Supported by GMW90
Function Code
03 (0x03)
04 (0x04)
06 (0x06)
16 (0x10)
43 / 14 (0x2B / 0x0E)
Table 43
Name
Read Holding Registers
Read Input Register
Write Single Register
Write Multiple Registers
Read Device Identification
GMW90 Modbus Measurement Data Registers
Name Metric float Metric
integer
CO2
0001…0002 0257 (×1)
RH
0003…0004 0258 (×0.01)
T
0005…0006 0259 (×0.01)
Td
0007…0008 0260 (×0.01)
Tdf
0009…0010 0261 (×0.01)
dTd
0011…0012 0262 (×0.01)
Tw
0013…0014 0263 (×0.01)
a
0015…0016 0264 (×0.01)
x
0017…0018 0265 (×0.01)
h
0019…0020 0266 (×0.01)
Metric
unit
ppm
%RH
°C
°C
°C
°C
°C
g/m3
g/kg
kJ/kg
Non-metric
float
6401…6402
6403…0004
6405…0006
6407…0008
6409…0010
6411…0012
6413…0014
6415…0016
6417…0018
6419…0020
Non-metric
integer
6657 (×1)
6458 (×0.01)
6459 (×0.01)
6460 (×0.01)
6461 (×0.01)
6462 (×0.01)
6463 (×0.01)
6464 (×0.01)
6465 (×0.01)
6466 (×0.01)
Non-metric
unit
ppm
%RH
°F
°F
°F
°F
°F
gr/ft3
gr/lb
btu/lb
Values read from the integer registers must be multiplied with the
provided multiplier to get the actual value. All integer values are signed.
Available measurements depend on the transmitter model. Values may be
unavailable also in case of device failure. Read status registers or
exception status outputs to check for failures. Accessing unavailable
(unsupported or temporarily missing) measurement data does not
generate an exception. “Unavailable” value (a quiet NaN for floating
point data or 0x8000 for integer data) is returned instead. An exception is
generated only for any access outside the GMW90 registers.
A “quiet NaN” value is returned for unavailable values. Writing any NaN
or infinite value is silently ignored.
NOTE
A complete 32-bit floating point value should be read and written in a
single Modbus transaction.
VAISALA ________________________________________________________________________ 89
User's Guide _______________________________________________________________________
Table 44
GMW90 Modbus Status Registers (Read-only)
Name
Error code (bits 15…0)
Table 45
Bit
0
1
2
3
4
5
6
7
8
9
Metric float
Pressure
Elevation
0777…0779
0779…0780
NOTE
Description
0 = no errors
GMW90 Modbus Error Code Bits
Description
Any critical error is active. Requires transmitter restart or maintenance.
Any error is active. May be recoverable.
Internal error (Flash)
Module communication or compatibility error
HTM10 module error
Temperature measurement error
Humidity measurement error
GM10 module error
CO2 measurement error
Miscellaneous error
Table 46
Name
Address
0513,6913
GMW90 Modbus Configuration Parameter Registers
Metric
integer
1029 (×1)
1030 (×1)
Metric unit &
valid range
700…1100 hPa
-700...2300 m
Non-metric
float
7177…7179
7179…7180
Non-metric
integer
7429 (×1)
7430 (×1)
Non-metric unit &
valid range
700 … 1100 hPa
-2300 … 10000 ft
Elevation is linked to pressure according to the following equation:
p = 101325 (1 - 2.25577 10-5 h)5.25588
where p is pressure in Pa and h is altitude above sea level in m. This
means that changing altitude will also change pressure and vice versa.
Table 47
GMW90 Modbus Device Identification
Object Id
0x00
0x01
0x02
0x03
0x04
0x80
0x81
Object Name
VendorName
ProductCode
MajorMinorVersion
VendorUrl
ProductName
SerialNumber
CalibrationDate
0x82
CalibrationText
Table 48
Code
01
02
03
Description
“Vaisala”
Transmitter model (for example, “GMW95”)
Software version (for example, “1.0.0”)
“http://www.vaisala.com/”
GMW90
Serial number (e.g. “H0710040”)
Date of the last calibration (for example,
“2012-08-07”, empty if not available)
Information text of the last calibration
(empty if not available)
GMW90 Modbus Exception Responses
Name
ILLEGAL FUNCTION
ILLEGAL DATA ADDRESS
ILLEGAL DATA VALUE
Reason
Unsupported function code
Address out of valid ranges
Otherwise invalid request
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