ABB 8241, 8242 Operating Instructions Manual
The ABB 8241 Colorimetric Silica Monitor is a reliable and accurate instrument designed to measure silica in water. It offers continuous online monitoring with a wide measurement range, making it ideal for various applications in the power, chemical, and semiconductor industries. It features programmable alarm relays and a user-friendly interface, ensuring efficient operation and easy troubleshooting. With its advanced technology and robust design, the ABB 8241 provides dependable and precise silica measurement, helping you optimize your processes and maintain water quality.
Advertisement
Advertisement
8240 Series Analyzers Operating Instructions
MODBUS Communication
Supplement
OUT OF SERVICE
CAL HOLD
ALARM 1 ALARM 2
OUT OF SAMPLE
Phosphate EIL 8242
ABB
The Company
BS EN ISO 9001
We are an established world force in the design and manufacture of instrumentation for industrial process control, flow measurement, gas and liquid analysis and environmental applications.
As a part of ABB, a world leader in process automation technology, we offer customers application expertise, service and support worldwide.
We are committed to teamwork, high quality manufacturing, advanced technology and unrivalled service and support.
The quality, accuracy and performance of the Company’s products result from over 100 years experience, combined with a continuous program of innovative design and development to incorporate the latest technology.
The NAMAS Calibration Laboratory No. 0255 is just one of the ten flow calibration plants operated by the Company, and is indicative of our dedication to quality and accuracy.
R
E
GISTER E
D
ISO 9001
Cert. No. Q5907
EN 29001 (ISO 9001)
Lenno, Italy – Cert. No. 9/90A
0255
Stonehouse, U.K.
Use of Instructions
Warning.
An instruction that draws attention to the risk of injury or death.
✶
Note.
Clarification of an instruction or additional information.
Caution.
An instruction that draws attention to the risk of damage to the product, process or surroundings.
Information.
Further reference for more detailed information or technical details.
Although Warning hazards are related to personal injury, and Caution hazards are associated with equipment or property damage, it must be understood that operation of damaged equipment could, under certain operational conditions, result in degraded process system performance leading to personal injury or death. Therefore, comply fully with all Warning and Caution notices.
Information in this manual is intended only to assist our customers in the efficient operation of our equipment. Use of this manual for any other purpose is specifically prohibited and its contents are not to be reproduced in full or part without prior approval of the
Technical Communications Department.
Health and Safety
To ensure that our products are safe and without risk to health, the following points must be noted:
1. The relevant sections of these instructions must be read carefully before proceeding.
2. Warning labels on containers and packages must be observed.
3. Installation, operation, maintenance and servicing must only be carried out by suitably trained personnel and in accordance with the information given.
4. Normal safety precautions must be taken to avoid the possibility of an accident occurring when operating in conditions of high pressure and/or temperature.
5. Chemicals must be stored away from heat, protected from temperature extremes and powders kept dry. Normal safe handling procedures must be used.
6. When disposing of chemicals ensure that no two chemicals are mixed.
Safety advice concerning the use of the equipment described in this manual or any relevant hazard data sheets (where applicable) may be obtained from the Company address on the back cover, together with servicing and spares information.
CONTENTS
Section
1
Page
INTRODUCTION ......................................................... 2
2
3
4
PREPARATION ........................................................... 2
2.1
Company Standard Settings ............................ 2
INSTALLATION ........................................................... 3
3.1
Serial Communication
Adaptors for Personal Computers ................... 3
3.1.1
Five-wire Configuration ...................... 3
3.1.2
Three-wire Configuration .................... 3
ELECTRICAL CONNECTIONS .................................. 3
4.1
Serial Connections ........................................... 3
4.1.1
Five-wire Cable ................................... 3
4.1.2
Three-wire Cable ................................ 3
5
6
SETTING UP ............................................................... 5
5.1
Termination Resistors ....................................... 5
PROGRAMMING ......................................................... 6
6.1
Serial Interface Page ........................................ 6
7
8
MODBUS PROTOCOL ............................................... 7
7.1
Introduction to MODBUS Protocol ................... 7
7.2
MODBUS Function Codes ............................... 7
MODBUS FUNCTIONS ............................................... 8
8.1
Read Coil Status .............................................. 8
8.1.1
Read Coil Status Query ...................... 8
8.1.2
Read Coil Status Response ............... 8
8.2
Read Holding Register ..................................... 8
8.2.1
Read Holding Register Query ............ 8
8.2.2
Read Holding Register Response ...... 9
8.3
Force Single Coil .............................................. 9
8.3.1
Force Single Coil Query ..................... 9
8.3.2
Force Single Coil Response ............... 9
8.4
Preset Single Register ................................... 10
8.4.1
Preset Single Register Query ........... 10
8.4.2
Preset Single Register Response .... 10
8.5
Loopback Test ................................................ 10
8.5.1
Loopback Test Query ........................ 10
8.5.2
Loopback Test Response ................. 10
8.6
Preset Multiple Registers ............................... 11
8.6.1
Preset Multiple Registers Query ...... 11
8.6.2
Preset Multiple Registers Response 11
Section
9
Page
EXCEPTION RESPONSES ...................................... 12
9.1
Examples ........................................................ 12
10 MODBUS COILS AND REGISTERS ........................ 13
10.1
Single-stream Silica Monitor,
Model 8241/185 .............................................. 13
10.1.1
Coils .................................................. 13
10.1.2
Holding Registers ............................. 14
10.2
Multi-stream Silica Monitor,
Model 8241/195 .............................................. 16
10.2.1
Coils .................................................. 16
10.2.2
Holding Registers ............................. 16
10.3
Single-stream Phosphate Monitor,
Model 8242/185 .............................................. 17
10.3.1
Coils .................................................. 17
10.3.2
Holding Registers ............................. 18
10.4
Multi-stream Phosphate Monitor,
Model 8242/195 .............................................. 20
10.4.1
Coils .................................................. 20
10.4.2
Holding Registers ............................. 20
11 OPERATION ............................................................... 21
12 SPECIFICATION ........................................................ 23
APPENDICES .................................................................... 23
A1 Non-volatile Memory Limitations .................... 23
1
2
1 INTRODUCTION 2 PREPARATION
This Supplement must be read in conjunction with the
Instruction Manual supplied with the instrument:
Manual Reference Instrument
• Model 8241
Colorimetric Silica Monitor
• Model 8242
Colorimetric Phosphate Monitor
–
–
IM/8241
IM/8242
For repeatable and reliable serial communication to take place between a master (host computer) and slaves (instruments) it is essential that the two conditions detailed in this section are met.
1.1
Electrical Connection
A standard method of electrical connection is used between the master and the slaves, with defined voltage levels and characteristics. The transmitter and receiver integrated circuits within the instrument meet the requirements of the EIA
(Electronic Industries Association, American) RS485 and
RS422 Serial Interface Standards.
The RS422/485 communication standard is used with the following logic levels: a) for logic ‘1’ (MARK condition or IDLE state) the ‘A’ terminal of the transmitter is negative (0V) with respect to the ‘B’ terminal (+5V) b) for logic ‘0’ (SPACE condition or ACTIVE state) the ‘A’ terminal of the transmitter is positive (+5V) with respect to the ‘B’ terminal (0V).
Preparation of the instrument is detailed in the relevant
Instruction Manual, with additions as detailed in this Section.
2.1
Company Standard Settings
Only those parameters detailed on the customer order are programmed at the factory. If any parameters are unsuitable for the application they can be reprogrammed – see Section 6 of the relevant Instruction Manual . Serial data programming details are given in Section 7 of this manual.
Standard settings for the serial data parameters are as follows:
Instrument Identity
Parity
Transmission Rate
01
None
9600 baud
Note.
The ‘A’ terminal is Tx + or Rx + and the ‘B’ terminal is Tx – or Rx –.
1.2
Protocol
A standard language or protocol must be used in both the master and the slaves for messages (commands and data) to be interpreted and acted upon. To achieve this second condition, MODBUS Protocol is utilized on the 8240 Monitor using the Remote Terminal Unit (RTU) mode only.
Two methods of message error checking are used. Parity checking is used, if selected, to detect transmission errors in individual characters.
Parity is used for simple error checking. The parity bit is a onebit code which is transmitted in addition to the ASCII character.
It can detect only one error per character, since two errors may cancel out. Parity is calculated by finding the sum of logic ‘1’s in the character and either: a) setting the parity bit to logic ‘1’ if the sum is odd, or logic ‘0’ if the sum is even, when using even parity.
or b) setting the parity bit to logic ‘0’ if the sum is odd, or logic ‘1’ if the sum is even, when using odd parity.
Cyclic Redundancy Checking (CRC-16) is used to detect errors in the Master messages and Slave responses. This therefore detects errors in the complete message sent and also the replies.
3 INSTALLATION 4 ELECTRICAL CONNECTIONS
Observe the limitations outlined in the installation information of the relevant Instruction Manual. The maximum serial data transmission line length for both RS422 and RS485 systems is
1200m.
All connections, apart from those for serial data communication, are made as shown in Figs. 2.3 and 2.5 of the relevant Instruction Manual.
3.1
Serial Communication
Adaptors for Personal Computers
An RS422/485 communications adaptor board is required for serial links. It is strongly recommended that the card used has galvanic isolation to protect the computer from lightning damage and increase immunity from noise pick-up from cables.
4.1
Serial Connections – Figs. 4.1 and 4.2
The transmitters must be connected in parallel as shown in the schematic diagram – Fig. 4.1. The RS485 standard quotes connection of maximum thirty two slaves (8240 Monitors) to any single driver (computer terminal or host computer); the
RS422 standard quotes connection of up to ten slaves.
However, these numbers can be increased if the driver’s serial port permits.
Make serial data connections and check the output board links as shown in Fig. 4.2c. The type of cable used is dependent on the transmission speed and cable length:
3.1.1
Five-wire Configuration
The following OPTO22 boards are recommended for use with the 4600 serial instruments:
Part No.
AC24
AC24 AT
AC34
ComputerType
XT Bus IBM PC compatible
AT Bus IBM PC compatible
Microchannel IBM PC.
The following ‘jumper’ selections are required on OPTO22 boards (usually supplied as the default configuration):
RX & TX install line termination jumper
Install pull-up and pull-down jumpers
CTS & RTS disable jumper installed.
Select board address and interrupts as described in the
OPTO22 manual.
3.1.2
Three-wire Configuration
The adaptor card must have the provision for disabling the transmitter after each message is transmitted, so that bus contention does not occur. This is often implemented by the use of the RTS signal to control the transmitter enable. Consult the adaptor card manufacturer to determine suitability.
4.1.1
Five-wire Cable – Figs. 4.2a and 11.1
Up to 6m (all speeds) – standard screened or twisted pair cable.
Up to 300m – twin twisted pair with overall foil screen and an integral drain wire, e.g. Belden 9502 or equivalent
Up to 1200m – twin twisted pair with separate foil screens and integral drain wires for each pair, e.g. Belden 9729 or equivalent
4.1.2
Three-wire Cable – Figs. 4.2b and 11.2
Up to 6m (all speeds) – standard screened or twisted pair cable.
Up to 1200m – single twisted pair with overall foil screen and integral drain wire, e.g. Belden 9501 or equivalent.
Caution.
Install the pull-up/pull-down resistors on either the RX or TX lines. The resistors must not be connected on both pairs of lines.
Termination Resistor
(on 8240's receive input)
Chain of 8240 Monitors
(Connected)
Computer Terminal or
Host Computer
Fig. 4.1 Schematic Diagram
Last 8240 in Chain
3
…4 ELECTRICAL CONNECTIONS
…4.1
Serial Connections
Output Board Motherboard
See Figs. 2.4 & 2.5 of the relevant Instruction Manual
4
1 – Tx+
2 – Rx+
3 – Common (0V)
4 – Tx–
5 – Rx–
6 – No connection
1
2
3
4
5
6
A – Five-wire Connections
1 – Tx+/Rx+
2 – Not Connected
3 – Common (0V)
4 – Tx–/Rx–
5 – Not Connected
6 – Not Connected
1
2
3
4
5
6
B – Three-wire Connections
Output Board
IC32 IC31
IC33
IC34
3-wire
C – Three- and Five-wire Links
Fig. 4.2 Serial Connections
5-wire
5 SETTING UP
For all aspects other than serial data transmission the transmitter is set up as shown in the relevant Instruction
Manual. Unless otherwise requested, the instrument is despatched with a transmission rate of 9600 baud and transmission line termination resistors linked-out. If the resistors are to be linked-in (see Fig. 5.1) carry out the following Section.
5.1
Termination Resistors – Fig. 5.1
For long transmission lines, termination resistors are required on the last 8240 Monitor in the chain and at the host computer/ computer terminal. Under normal operating conditions the resistors are required at the last 8240 receive inputs only – see
Fig. 4.1. The transmitter’s resistors are selected using plug-in links – see Fig. 5.1.
Switch off the supply and gain access to the output board – see relevant Instruction Manual .
Set the termination resistor links as shown in Fig. 5.1.
Output Board
IC32 IC31
IC33
IC34
Termination
Resistors
IN
Termination
Resistors
OUT
Fig. 5.1 Termination Resistor Links
5
6 PROGRAMMING
The general programming procedure is as detailed in the relevant Instruction Manual, but with an additional Set Up Serial Interface frame in the Set Up Instrument page.
Page 0
xx/x xxxxxxxxxxx
DIAGNOSTIC INFORMATION PAGE 1.0
Next 5 weekly service = DD/MM
Next yearly service = DD/MM/YY
Monitor in service
MAINTENANCE AND CALIBRATION. PAGE 2.0
Enter security code xxxx
SET UP INSTRUMENT PAGE 3.0
Enter security code xxxx
SET UP INSTRUMENT PAGE 3.1
Software issue = x
Control temperature = xx.x‘C
Display units = <units>
Display units as = xxx
Alter setup security code = xxxx
CLOCK SETUP. PAGE 3.2
Date (DD/MM/YY) = xx/xx/xx
Time (HH:MM) = xx:xx
SET UP SERIAL INTERFACE PAGE 3.3
Baud Rate = xxxx
Parity = xxxx
ID = xx
SET UP CURRENT OUTPUTS PAGE 4.0
Output range 1 = 0 to xxx <units>
Calibration hold = NO
Output range 2 = 0 to xxx <units>
Calibration hold = NO
Output type = xx to xx mA
Test output = NO
Fig. 6.1 Location of Serial Data Interface Page
6.1 Serial Interface Page
Refer to Section 6.3 (Set Up Instrument) in the relevant Instruction Manual.
SET UP SERIAL INTERFACE PAGE 3.3
Baud Rate = xxxx
Parity = xxxx
ID = xx
Baud Rate
Select the transmission rate required (1200 slowest, 9600 fastest).
Parity
Select the appropriate parity (None, Odd or Even) to match the computer terminal or host computer.
Transmitter Identification
Assign the transmitter an identification number (1 to 99) – see
Section 4.1. The identification number allows more than one transmitter to be accessed via the communication channel.
6
7 MODBUS PROTOCOL
7.1
Introduction to MODBUS Protocol (RTU only)
MODBUS communication is based on a master and a slave arrangement. The master sends a message to one slave at a time and waits for a reply.
The slave cannot accept a new message until the existing message is processed and a reply sent to the master (maximum response time 250 milliseconds). The slave monitors the elapsed time between receipt of characters. If the elapsed time without a new character is 3 1 /
2
character times, the slave assumes the next character received is the start of a new message.
To allow the master to differentiate between more than one slave in a system, each slave is given a unique identity address
(between 1 and 99).
A broadcast address (address zero) can be used to access all slave devices with one command. This is limited to write messages only and there is no slave acknowledgment.
Note . MODBUS RTU requires 1 start bit, 8 data bits, 1 parity bit (optional) and 1 or 2 stop bits. The 8240 uses only
1 stop bit.
7.2
MODBUS Function Codes – Table 4.1
The function code field instructs the addressed slaves which function to perform.
MODBUS
Function Code
MODBUS Message Name 4600 MODBUS Definition
01
03
05
06
08
16
Read Coil Status
Read Holding Register
Force Single Coil
Preset Single Register
Loopback Diagnostic Test
Preset Multiple Registers
Read up to 16 consecutive discrete (boolean) points from a specific point. The 8240 returns zeros for points which do not contain defined data and NAKs* any request for point numbers greater that 100.
Up to 8 consecutive registers from a specific starting register. The 8240 returns zeros from registers which do not contain defined data and NAKs any request for register numbers greater than 100.
Write one discrete (boolean) point. The 8240 NAKs this if the point is not currently writeable.
Write one register. The 8240 NAKs if the register is not currently writeable. This function code also applies any existing limits to the register before storage in the database.
Echo the message, only 'Return of Query' is supported.
Write up to 8 consecutive registers from a specified starting register. The 8240 NAKs if any of the registers are not currently writeable, but still carries out all the writes which are valid, applying any currently applicable limits to the value before storage in the database.
*NAK = Negative Acknowledgement
Table 7.1 MODBUS Function Codes
7
8
8 MODBUS FUNCTIONS
This section shows typical examples of MODBUS function codes 01, 03, 05, 06, 08 and 16.
8.1
Read Coil Status – Function Code 01
8.1.1
Read Coil Status Query
This function allows the user to obtain the ON/OFF status of logic coils used to control discrete outputs from the addressed slave only. Broadcast mode is not supported with this function code. In addition to the slave address and function fields, the message requires that the information field contain the initial coil offset address to be read (starting address) and the number of locations to be interrogated must obtain status data.
Note . The coil offset address is the coil number minus one, e.g. to start at coil 31 the data start value must be set to 30
(1EH).
Example – a read coil status request to read 5 coils from slave (01) starting at coil 01 (Out of Service) is shown below.
Address
01
Function
01
Coil Start
Offset High
00
Coil Start
Offset Low
00
Number of
Coils High
00
Number of
Coils Low
05
Error Check Field (CRC-16)
FC 09
8.1.2
Read Coil Status Response
The data is packed one bit for each coil (1 = ON, 0 = OFF). The response includes the slave address, function code, quantity of data characters, the data characters and error checking. The low order bit of the first character contains the first addressed coil and the remainder follow. For coil quantities that are not even multiples of eight, the last characters are filled in with zeros at high order end.
Example – the response to the read coil status query shows the following:
Monitor Out of Service
Monitor Not in Calibration
Monitor in Hold Mode
Pumps On
Control Temperature Not 'Out of Range'
Address
01
Function
01
Byte Count
01
Data Coil Status
1 to 6
0D
Error Check Field (CRC-16)
90 4D
8.2
Read Holding Register – Function Code 03
8.2.1
Read Holding Register Query
The Read holding registers allow the user to obtain the binary contents of holding registers in the addressed slave.
Note . The data start register must contain the offset address of the first register to be accessed, e.g. to start at register
11 the data start register must contain 10 (0AH).
Broadcast mode is not allowed.
Example – a read holding register request to read 5 holding registers from slave (01) starting at holding address 05 (Time Hour) is shown below.
Address
01
Function
03
Register Start
Offset High
00
Register Start
Offset Low
04
Data Number of
Registers High
00
Data Number of
Registers Low
05
Error Check Field (CRC-16)
C4 08
…8 MODBUS FUNCTIONS
8.2.2
Read Holding Register Response
The addressed slave responds with its address and function code, followed by the information field. The information field contains
1 byte describing the quantity of data bytes to be returned. The contents of each register requested (DATA) is two bytes, the first byte includes the high order bits and the second the low order bits.
Example – the response to the read holding register query shows the following:
Time (Hour) = 15
Time (Minutes) = 20
Time (Date) = 25
Time (Month) = February
Address Function
01 03
Byte Count
08
Holding
Register 11
High Low
00 0F
Holding
Register 12
High Low
00 14
Holding
Register 13
High Low
00 19
Holding
Register 14
High Low
00 02
Error Check Field
(CRC-16)
0A D2
8.3
Force Single Coil – Function Code 05
8.3.1
Force Single Coil Query
This message forces a single coil either ON or OFF. The data value 65,280 (FF00 HEX) sets the coil ON and the value zero turns it OFF. All other values are illegal and do not affect the coil.
Note . To write to a coil the coil offset address must be used, e.g. to write to coil 10, the coil address 09(09H) is transmitted.
The use of slave address zero (broadcast mode) forces all attached slaves to modify the desired coil.
Example – a force single coil request to switch ON coil address 10 (NV Memory Save) in slave 01 is shown below.
Address
01
Function
05
Coil Offset
High
00
Coil Offset
Low
09
Data Value High
FF
Data Value Low
00
Error Check Field (CRC-16)
5C 38
8.3.2
Force Single Coil Response
The response is confirmation of the query after the coil state has been altered.
Example :
Address
01
Function
05
Coil Offset
High
00
Coil Offset
Low
09
Data Value High
FF
Data Value Low
00
Error Check Field (CRC-16)
5C 38
9
8 MODBUS FUNCTIONS…
8.4
Preset Single Register – Function Code 06
8.4.1
Preset Single Register Query
The preset single register allows the user to modify the contents of a holding register.
Note . Function codes 5, 6 and 16 are the only messages that are recognized as valid for broadcast.
Example – a preset single register request to write the value 501 to holding register address 50 (Output Range 1) in slave 01 is shown below.
Since all register values for measured variables and alarm set points are ranged to 12 bits (for RTU), then to calculate the Data
Value High and Data Value Low for a setpoint of 501 the following method is used:
Instrument Range therefore
= 0 to 2000
501 x 4095 = 1026
2000
10 converted to hexadecimal 1026
10
= 402
8 therefore Data Value High = 04
Data Value Low = 02
Note . To write to a register, the register’s offset address must be used, e.g. to write to register 50, the offset address
49(31) is transmitted.
Address
01
Function
06
Register
Offset High
00
Register
Offset Low
31
Data Value High
04
Data Value Low
02
Error Check Field (CRC-16)
5B 04
8.4.2
Preset Single Register Response
The normal response to a preset single register request is to retransmit the query message after the register has been altered.
Example :
Address
01
Function
06
Register
Offset High
00
Register
Offset Low
31
Data Value High
04
Data Value Low
02
Error Check Field (CRC-16)
5B 0B
10
…8 MODBUS FUNCTIONS
8.5
Loopback Test – Function Code 08
8.5.1
Loopback Test Query
The purpose of the loopback test is to test the MODBUS system, it does not affect the content of the controller. Variations in the response may indicate faults in the MODBUS system. The information field contains 2 bytes for the designation of the diagnostic code followed by 2 bytes to designate the action to be taken.
Example :
Address Function
Register
Offset High
00
Register
Offset Low
31
Data Value High Data Value Low
01 08 04 02
8.5.2
Loopback Test Response
The response always echoes the query, only diagnostic code 0 (bytes 3 and 4) can be used.
Example :
Error Check Field (CRC-16)
32 C5
Address Function
08
Data Diagnostic
Code High
Data Diagnostic
Code Low
00 31
Data *
01 04
*These are considered to be the information fields for diagnostic mode.
Data *
02
Error Check Field (CRC-16)
32 C5
8.6
Preset Multiple Registers – Function Code 16
8.6.1
Preset Multiple Registers Query
Holding registers existing within the controller can have their contents changed by this message. When used with slave address zero (Broadcast mode) all slave controllers load the selected registers with the contents specified.
Note.
To write to multiple registers, the initial register offset address must be used, e.g. to write to register 02 onwards, the offset address 01 is transmitted.
Example – a preset multiple registers request to write the value 1000 to the register address (Output Range 1) and the value 2000 to the register address (Output Range 2) in slave 01 is shown below.
Address Function
01 10
Register
Start
Offset
High
00
Register
Start
Offset
Low
Number of
Registers
Byte
Count
Holding
Register
02 High
31 00 02 04 08
Holding
Register
02 Low
Holding
Register
03 High
Holding
Register
03 Low
00 0F FF
Error Check Field
(CRC-16)
76 A7
8.6.2
Preset Multiple Registers Response
The response confirms slave identification, function code, starting register address and quantity only.
Example:
Address
01
Function
10
Register Start
Offset High
00
Register Start
Offset Low
31
Number of Registers
00 02
Error Check Field (CRC-16)
10 07
11
9 EXCEPTION RESPONSES
The exception response codes sent by the slave are shown in Table 9.1. When a slave detects one of these errors, it sends a response message to the master consisting of slave address, function code, error code and error check fields.
Exception
Response
Code
Exception Response Name Exception Response Definition
01
02
03
07
08
Illegal Function
Illegal Data Address
Illegal Data Value
Negative Acknowledgement
Memory Parity Error
The message function received is not an allowable action for the 8240.
The address reference in the data field is not an allowable address for the 8240.
The value referenced in the data field is not allowable in the addressed slave location.
The function just requested cannot be performed.
Parity check indicates an error in one or more of the characters received.
Table 9.1 Exception Response Data
9.1
Examples
A read register request to read holding register address 251 of slave 01 (undefined address for slave, beyond address limit) is shown below.
Slave
Address
01
Function
03
Register Start
Offset High
Register Start
Offset Low
00 FA
Number of
Registers High
00
Number of
Registers Low
06
Error Check Field (CRC-16)
E5 F9
The response is an exception response sighting ‘illegal data address’. To indicate that the response is a notification of an error, the most significant bit of the function code is set to 1.
Slave Address
01
Function
83
Exception Code
02
Error Check Field (CRC-16)
CO F1
12
10 MODBUS COILS AND REGISTERS
10.1
Single-stream Silica Monitor, Model 8241/185
10.1.1
Coils
012
013
014
009
010
011
Input Number
001
002
003
004
005
006
007
008
R
R
R
R
R/W
R
Read/Write Description
R Monitor Status
R
R
Monitor Calibration Status
Hold Mode
R
R
R
R
R
Pump Status
Upper Limit Control
Temperature Status
Lower Limit Control
Temperature Status
Reagent Status
Five-weekly Service Status
Yearly Service Status
Non-Vol Memory Mode
Calibration Offset Alarm
Lower Calibration Slope Alarm
Upper Calibration Slope Alarm
Sample Status
Response/Entry
0 = Monitor In Service
1 = Monitor Not In Service
0 = Monitor Not In Calibration
1 = Monitor In Calibration
0 = Hold Mode Off
1 = Hold Mode On
0 = Pumps Off
1 = Pumps On
0 = Control Temperature + In Range
1 = Control Temperature + Out Of Range
0 = Control Temperature – In Range
1 = Control Temperature – Out Of Range
0 = Monitor Not Out Of Reagent
1 = Monitor Out Of Reagent
0 = Five-weekly Service Not Overdue
1 = Five-weekly Service Overdue
0 = Yearly Service Not Overdue
1 = Yearly Service Overdue
0 = Disable Write To Non-Volatile Memory
1 = Enable Write To Non-volatile Memory
0 = Calibration Offset Inside Of Limits
1 = Calibration Offset Outside Of Limits
0 = Calibration Slope Inside Of Lower Limits
1 = Calibration Slope Outside Of Lower
0 = Calibration Slope Inside Of Higher Limits
1 = Calibration Slope Outside Of Higher Limits
Monitor In Sample
Monitor Out Of Sample
13
…10 MODBUS COILS AND REGISTERS
…10.1
Single-stream Silica Monitor, Model 8241/185
10.1.2
Holding Registers
035
036
037
038
039
040
041
042
043
044
045
021
022
023
024
025
016
017
018
019
020
026
027
028
029
030
031
032
033
034
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Input Number Read/Write
006
007
008
009
010
001
002
003
004
005
011
012
013
014
015
R
R
R
R
R/W
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
Description Response/Entry
Units
Maximum Output Range
Optical System Temperature
Reaction Block Temperature
Real-time Clock
Real-time Clock
Real-time Clock
Real-time Clock
Real-time Clock
Set Real-time Clock
0=ppb, 1= µ g/L, 2= µ g/kg
0=0-2000, 1=0-5000
Scaled between 0.0 and 100.0 ° C
Scaled between 0.0 and 100.0 ° C
Hours
Minutes
Date
Month
Year
Date
Set Real-time Clock
Set Real-time Clock
Set Real-time Clock
Set Real-time Clock
Load New Time
Next Auto Zero Calibration Date
Next Auto Zero Calibration Month
Next Auto Zero Calibration Year
Last Auto Zero Calibration Date
Last Auto Zero Calibration Month
Last Auto Zero Calibration Year Year
Next Secondary Calibration Date Date
Next Secondary Calibration Month Month
Next Secondary Calibration Year
Last Secondary Calibration Date
Year
Date
Month
Year
Hour
Minutes
0=Disable New Time Load
1=Enable New Time Load
Date
Month
Year
Date
Month
Last Secondary Calibration Month Month
Last Secondary Calibration Year Year
Relay Alarm Hysteresis
Relay Alarm Failsafe
Current Output Type
0 to 5 %
0=No, 1=Yes
0=0-10mA, 1=0-20mA, 2=4-20mA
Calibration Type
Do Secondary Calibration
Do Remote Calibration
Secondary Calibration
Concentration
Next Auto Cal Day
0=None, 1=Routine, 2=Baseline
0=No, 1=Yes
0=No, 1=Yes
Scaled 0 to 2000 or 0 to 5000
Date
Next Auto Cal Month
Next Auto Cal Year
Next Auto Cal Hours
Next Auto Cal Minutes
Auto Zero Cal Frequency
No Of Auto Zeros Between
Secondary Calibrations
Time To Auto Zero Compensation
Time To Sec Cal Compensation
Time To Recovery
Displayed Offset
Month
Year
Hours
Minutes
0 = Off, 1 = 12 Hrs, 2 = 1 Day, 3 = 2 Days ... 8 = 7 Days
0 = 0, 1 = 1 ... 10 = 10,11=Off
Minutes
Minutes
Minutes
–100.0 to 100.0
14
…10.1
Single-stream Silica Monitor, Model 8241/185
…10.1.2
Holding Registers
Input Number Read/Write
046
047
048
049
R
R
R
R
055
056
057
058
059
060
050
051
052
053
054
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Displayed Slope
Silica Concentration
Silica Concentration
Silica Concentration
Decimal Point Status
Current Output 1 Range
Current Output 2 Range
Alarm 1 Relay Setpoint
Alarm 1 Relay On/Off Status
Alarm 1 Relay Action
Alarm 2 Relay Setpoint
Alarm 2 Relay On/Off Status
Alarm 2 Relay Action
Alarm Relay Delay
Current Output 1 Hold Status
Current Output 2 Hold Status
10 MODBUS COILS AND REGISTERS…
Response/Entry
0.0 – 100.0
Scaled 0 to 2000 or 0 to 5000 with decimal point
Scaled 0 to 2000 or 0 to 5000 with no decimal doint
0=0 dp, 1=1 dp
Scaled 0 to 2000 or 0 to 5000
Scaled 0 to 2000 or 0 to 5000
Scaled 0 to 2000 or 0 to 5000
0=Off, 1=On
Scaled 0 to 2000 or 0 to 5000
0=Off, 1=On
0=Low, 1=High
0 to 99 Minutes
0=No, 1=Yes
0=No, 1=Yes
15
…10 MODBUS COILS AND REGISTERS
10.2
Multi-stream Silica Monitor, Model 8241/195
10.2.1
Coils
Coils used on Multi-stream monitors are identical to those used on single-stream versions – see Section 10.1.1.
10.2.2
Holding Registers
In addition to the Holding Registers listed in Section 10.1.2 above, Multi-stream monitors use the following Holding Registers:
Input Number Read/Write Description Response/Entry
100
101
102
103
104
105
130
131
132
133
134
135
136
121
122
123
124
125
126
127
128
129
112
113
114
115
116
117
118
119
120
106
107
108
109
110
111
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Silica Concentration,
Stream 1
Silica Concentration
Stream 2
Silica Concentration
Stream 3
Silica Concentration,
Stream 4
Silica Concentration
Stream 5
Silica Concentration
Stream 6
Stream 1 Decimal Point
Stream 2 Decimal Point
Stream 3 Decimal Point
Stream 4 Decimal Point
Stream 5 Decimal Point
Stream 6 Decimal Point
Alarm 1 Relay Setpoint
Alarm 1 Relay On/Off Status
Alarm 1 Relay Action
Alarm 2 Relay Setpoint
Alarm 2 Relay On/Off Status
Alarm 2 Relay Action
Alarm 3 Relay Setpoint
Alarm 3 Relay On/Off Status
Alarm 3 Relay Action
Alarm 4 Relay Setpoint
Alarm 4 Relay On/Off Status
Alarm 4 Relay Action
Alarm 5 Relay Setpoint
Alarm 5 Relay On/Off Status
Alarm 5 Relay Action
Alarm 6 Relay Setpoint
Alarm 6 Relay On/Off Status
Alarm 6 Relay Action
Relay Configuration
Current Output 4 Range
Current Output 5 Range
Current Output 6 Range
Current Output 1 Range
Current Output 2 Range
Current Output 3 Range
Scaled 0 to 2000 or 0 to 5000 with decimal point
Scaled 0 to 2000 or 0 to 5000 with decimal point
Scaled 0 to 2000 or 0 to 5000 with no decimal doint
Scaled 0 to 2000 or 0 to 5000 with decimal point
Scaled 0 to 2000 or 0 to 5000 with decimal point
Scaled 0 to 2000 or 0 to 5000 with no decimal doint
0 = 0 d.p., 1 = 1 d.p.
0 = 0 d.p., 1 = 1 d.p.
0 = 0 d.p., 1 = 1 d.p.
0 = 0 d.p., 1 = 1 d.p.
0 = 0 d.p., 1 = 1 d.p.
0 = 0 d.p., 1 = 1 d.p.
Scaled 0 to 2000 or 0 to 5000
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 2000 or 0 to 5000
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 2000 or 0 to 5000
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 2000 or 0 to 5000
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 2000 or 0 to 5000
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 2000 or 0 to 5000
0=Off, 1=On
0=Low, 1=High
0=Concentration, 1=Out of Sample
Scaled 0 to 2000 or 0 to 5000
Scaled 0 to 2000 or 0 to 5000
Scaled 0 to 2000 or 0 to 5000
Scaled 0 to 2000 or 0 to 5000
Scaled 0 to 2000 or 0 to 5000
Scaled 0 to 2000 or 0 to 5000
16
10 MODBUS COILS AND REGISTERS…
10.3
Single-stream Phosphate Monitor, Model 8242/185
10.3.1
Coils
Input Number Read/Write Description
001 R Monitor Status
002
003
R
R
Monitor Calibration Status
Hold Mode
012
013
014
009
010
011
004
005
006
007
008
R
R
R
R
R/W
R
R
R
R
R
R
Pump Status
Upper Limit Control
Temperature Status
Lower Limit Control
Temperature Status
Reagent Status
Five-weekly Service Status
Yearly Service Status
Non-Vol Memory Mode
Calibration Offset Alarm
Lower Calibration Slope Alarm
Upper Calibration Slope Alarm
Sample Status
Response/Entry
0 = Monitor In Service
1 = Monitor Not In Service
0 = Monitor Not In Calibration
1 = Monitor In Calibration
0 = Hold Mode Off
1 = Hold Mode On
0 = Pumps Off
1 = Pumps On
0 = Control Temperature + In Range
1 = Control Temperature + Out Of Range
0 = Control Temperature – In Range
1 = Control Temperature – Out Of Range
0 = Monitor Not Out Of Reagent
1 = Monitor Out Of Reagent
0 = Five-weekly Service Not Overdue
1 = Five-weekly Service Overdue
0 = Yearly Service Not Overdue
1 = Yearly Service Overdue
0 = Disable Write To Non-Volatile Memory
1 = Enable Write To Non-volatile Memory
0 = Calibration Offset Inside Of Limits
1 = Calibration Offset Outside Of Limits
0 = Calibration Slope Inside Of Lower Limits
1 = Calibration Slope Outside Of Lower
0 = Calibration Slope Inside Of Higher Limits
1 = Calibration Slope Outside Of Higher Limits
Monitor In Sample
Monitor Out Of Sample
17
035
036
037
038
039
040
041
042
043
044
045
021
022
023
024
025
016
017
018
019
020
026
027
028
029
030
031
032
033
034
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
…10 MODBUS COILS AND REGISTERS
…10.3
Single-stream Phosphate Monitor, Model 8242/185
…10.3.2
Holding Registers
Input Number Read/Write
006
007
008
009
010
001
002
003
004
005
011
012
013
014
015
R
R
R
R
R/W
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
Description Response/Entry
Units
Optical Filter
Optical System Temperature
Reaction Block Temperature
Real-time Clock
Real-time Clock
Real-time Clock
Real-time Clock
Real-time Clock
Set Real-time Clock
3=ppb, 4=mg/L, 5=mg/kg
0=Filter 1, 1=Filter 2
Scaled between 0.0 and 100.0 ° C
Scaled between 0.0 and 100.0 ° C
Hours
Minutes
Date
Month
Year
Date
Set Real-time Clock
Set Real-time Clock
Set Real-time Clock
Set Real-time Clock
Load New Time
Next Auto Zero Calibration Date
Next Auto Zero Calibration Month
Next Auto Zero Calibration Year
Last Auto Zero Calibration Date
Last Auto Zero Calibration Month
Last Auto Zero Calibration Year Year
Next Secondary Calibration Date Date
Next Secondary Calibration Month Month
Next Secondary Calibration Year
Last Secondary Calibration Date
Year
Date
Month
Year
Hour
Minutes
0=Disable New Time Load
1=Enable New Time Load
Date
Month
Year
Date
Month
Last Secondary Calibration Month Month
Last Secondary Calibration Year Year
Relay Alarm Hysteresis
Relay Alarm Failsafe
Current Output Type
0 to 5 %
0=No, 1=Yes
0=0-10mA, 1=0-20mA, 2=4-20mA
Calibration Type
Do Secondary Calibration
Do Remote Calibration
Secondary Calibration
Concentration
Next Auto Cal Day
0=None, 1=Routine, 2=Baseline
0=No, 1=Yes
0=No, 1=Yes
Scaled 0 to 20.0 or 0 to 60.0
Date
Next Auto Cal Month
Next Auto Cal Year
Next Auto Cal Hours
Next Auto Cal Minutes
Auto Zero Cal Frequency
No Of Auto Zeros Between
Secondary Calibrations
Time To Auto Zero Compensation
Time To Sec Cal Compensation
Time To Recovery
Displayed Offset
Month
Year
Hours
Minutes
0 = Off, 1 = 12 Hrs, 2 = 1 Day, 3 = 2 Days ... 8 = 7 Days
0 = 0, 1 = 1 ... 10 = 10,11=Off
Minutes
Minutes
Minutes
–100.0 to 100.0
18
…10.3
Single-stream Phosphate Monitor, Model 8242/185
…10.3.2
Holding Registers
10 MODBUS COILS AND REGISTERS…
Input Number Read/Write
046
047
048
049
R
R
R
R
055
056
057
058
059
060
050
051
052
053
054
081
082
083
084
085
086
087
088
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Displayed Slope
Phosphate Concentration
Phosphate Concentration
Phosphate Concentration
Decimal Point Status
Current Output 1 Range
Current Output 2 Range
Alarm 1 Relay Setpoint
Alarm 1 Relay On/Off Status
Alarm 1 Relay Action
Alarm 2 Relay Setpoint
Alarm 2 Relay On/Off Status
Alarm 2 Relay Action
Alarm Relay Delay
Current Output 1 Hold Status
Current Output 2 Hold Status
Unit Type
Colour Compensation Applied
Colour Compensation Frequency
Next Colour Compensation
Next Colour Compensation
Next Colour Compensation
Next Colour Compensation
Next Colour Compensation
Response/Entry
0.0 to 100.0
Scaled 0 to 10.00 with 2 decimal places
Scaled 0 to 60.0 with 1 decimal place
0=1 dp, 1=2 dp
Scaled 0 to 20.0 or 0 to 60.0
Scaled 0 to 20.0 or 0 to 60.0
Scaled 0 to 20.0 or 0 to 60.0
0=Off, 1=On
Scaled 0 to 20.0 or 0 to 60.0
0=Off, 1=On
0=Low, 1=High
0 to 99 Minutes
0=No, 1=Yes
0=No, 1=Yes
0 = P, 1 = PO
4
Scaled 0.0 to 60.00
0=Off, 1=Man, 2=24hr, 3=12hr, 4=6hr, 5=3hr, 6=1hr
Date
Month
Year
Hour
Minute
19
…10 MODBUS COILS AND REGISTERS
10.4
Multi-stream Phosphate Monitor, Model 8242/195
10.4.1 Coils
Coils used on Multi-stream monitors are identical to those used on single-stream versions – see Section 10.3.1.
10.4.2 Holding Registers
In addition to the Holding Registers listed in Section 10.3.2 above, Multi-stream monitors use the following Holding Registers:
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
112
113
114
115
116
117
118
119
120
106
107
108
109
110
111
Input Number Read/Write
100 R
101
102
R
R
103
104
105
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Phosphate Concentration,
Stream 1
Phosphate Concentration
Stream 2
Phosphate Concentration
Stream 3
Phosphate Concentration,
Stream 4
Phosphate Concentration
Stream 5
Phosphate Concentration
Stream 6
Stream 1 Decimal Point
Stream 2 Decimal Point
Stream 3 Decimal Point
Stream 4 Decimal Point
Stream 5 Decimal Point
Stream 6 Decimal Point
Alarm 1 Relay Setpoint
Alarm 1 Relay On/Off Status
Alarm 1 Relay Action
Alarm 2 Relay Setpoint
Alarm 2 Relay On/Off Status
Alarm 2 Relay Action
Alarm 3 Relay Setpoint
Alarm 3 Relay On/Off Status
Alarm 3 Relay Action
Alarm 4 Relay Setpoint
Alarm 4 Relay On/Off Status
Alarm 4 Relay Action
Alarm 5 Relay Setpoint
Alarm 5 Relay On/Off Status
Alarm 5 Relay Action
Alarm 6 Relay Setpoint
Alarm 6 Relay On/Off Status
Alarm 6 Relay Action
Relay Configuration
Current Output 4 Range
Current Output 5 Range
Current Output 6 Range
Current Output 1 Range
Current Output 2 Range
Current Output 3 Range
Response/Entry
Scaled 0 to 20.0 or 0 to 60.0 with decimal places
Scaled 0 to 20.0 or 0 to 60.0 with decimal places
Scaled 0 to 20.0 or 0 to 60.0 with decimal places
Scaled 0 to 20.0 or 0 to 60.0 with decimal places
Scaled 0 to 20.0 or 0 to 60.0 with decimal places
Scaled 0 to 20.0 or 0 to 60.0 with decimal places
0 = 1 d.p., 1 = 2 d.p.
0 = 1 d.p., 1 = 2 d.p.
0 = 1 d.p., 1 = 2 d.p.
0 = 1 d.p., 1 = 2 d.p.
0 = 1 d.p., 1 = 2 d.p.
0 = 1 d.p., 1 = 2 d.p.
Scaled 0 to 20.0 or 0 to 60.0
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 20.0 or 0 to 60.0
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 20.0 or 0 to 60.0
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 20.0 or 0 to 60.0
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 20.0 or 0 to 60.0
0=Off, 1=On
0=Low, 1=High
Scaled 0 to 20.0 or 0 to 60.0
0=Off, 1=On
0=Low, 1=High
0=Concentration, 1=Out of Sample
Scaled 0 to 20.0 or 0 to 60.0
Scaled 0 to 20.0 or 0 to 60.0
Scaled 0 to 20.0 or 0 to 60.0
Scaled 0 to 20.0 or 0 to 60.0
Scaled 0 to 20.0 or 0 to 60.0
Scaled 0 to 20.0 or 0 to 60.0
20
11 OPERATION
Before attempting any serial communication, first ensure that the 8240 Monitors connected to the computer terminal or host computer by serial link are functioning correctly as individual instruments.
Ensure that the serial data connections to the 8240 Monitor have been made correctly with respect to the computer terminal, or host computer, interface. If the above check appears satisfactory, test the serial communication by sending an appropriate message from the computer terminal or host computer to a transmitter and observe if it replies; thus establishing communication.
If communication is not established, check that the computer terminal, or host computer, interface is set up correctly and that the plug-in links within each transmitter are correctly positioned – see Section 5.
1 2 3
Rx+ Tx+
4 5 6
Rx– Tx–
Tx–
Tx+
Rx–
Rx+
Computer Terminal or Host Computer
+5V
Pull-up
Resistor
'A'
'B'
Pull-down
Resistor
0V
+5V
Pull-up
Resistor
'A'
'B'
Pull-down
Resistor
0V
Fig. 11.1 Pull-up and Pull-down Resistors (5-wire only)
21
…11 OPERATION
Check that the parameters programmed in the instrument’s Serial Data Communication Page are compatible with those of the computer terminal or host computer – see Section 7.
If communication is still not possible or is erratic, check that the computer terminal, or host computer, interface has pull-up ant pull-down resistors connected as shown in Figs. 11.1 and 11.2.
Note. If no reply is received from the instrument within 160ms, retransmit the command. If after five command re-entries a satisfactory reply has not been received, the communication link has been broken and must be re-checked.
Computer Terminal or Host Computer
Tx–
Tx+
Rx–
Rx+
Pull-down
Resistor
1 2 3
Rx+ Tx+
4 5 6
Rx– Tx–
Pull-down
Resistor
0V
Fig. 11.2 Pull-up and Pull-down Resistors (3-wire only)
'A'
'B'
+5V
Pull-up
Resistor
'A'
'B'
22
12 SPECIFICATION
As detailed in the relevant Instruction Manual, with the following additions:
EIA Communication
Standards
RS422, RS485
2-wire or 4-wire modes
Parity None
Odd
Even
Programmable
Transmission line length 1200m max.
Transmission speeds 1200 baud
2400 baud
4800 baud
9600 baud
Programmable
APPENDICES
A1 Non-volatile Memory Limitations
Note.
If the number of write cycles to any particular non-volatile memory register exceeds 10 4 write cycles, the register’s contents may not be retained.
Any changes made to a parameter, e.g. Alarm trip value, via the serial link are stored in a non-volatile memory register assigned to that parameter.
The number of write cycles to a particular register can be reduced by disabling the non-volatile memory access when making changes to parameters which do not need to be saved on power-down. This is done by using the non-volatile save state (coil number 50) .
When the non-volatile save state is set to 'Enable', any parameter changes made via the serial link are written to the non-volatile memory register and retained on power-down. If the non-volatile save state is set to'Disable', parameter changes made via the serial link are not retained on powerdown.
The non-volatile save state is not retained on power-down and must be reset to the required state each time the instrument is powered down, replaced with another instrument or the host computer is powered down.
23
NOTES
24
PRODUCTS & CUSTOMER SUPPORT
A Comprehensive Instrumentation Range
Analytical Instrumentation
• Transmitters
On-line pH, conductivity, and dissolved oxygen transmitters and associated sensing systems.
• Sensors pH, redox, selective ion, conductivity and dissolved oxygen.
• Laboratory Instrumentation pH and dissolved oxygen meters and associated sensors.
• Water Analyzers
For water quality monitoring in environmental, power generation and general industrial applications including: pH, conductivity, ammonia, nitrate, phosphate, silica, sodium, chloride, fluoride, dissolved oxygen and hydrazine.
• Gas Analyzers
Zirconia, katharometers, hydrogen purity and purge-gas monitors, thermal conductivity.
Controllers & Recorders
• Controllers
Digital display, electronic, pneumatic. Discrete singleloop and multi-loop controllers which can be linked to a common display station, process computer or personal computer.
• Recorders
Circular and strip-chart types (single and multi-point) for temperature, pressure, flow and many other process measurements.
Electronic Transmitters
• Smart & Analog Transmitters
For draft, differential, gauge and absolute pressure measurement. Also, liquid level and temperature.
• I to P Converters and Field Indicators
Flow Metering
• Magnetic Flowmeters
Electromagnetic, insertion type probes and watermeters.
• Turbine Flowmeters
• Wedge Flow Elements
• Mass Flow Meters
Transmitters, sensors, controllers and batch/display units.
Level Control
• Submersible, Capacitance & Conductivity.
Pneumatic Instrumentation
• Transmitters
• Indicating Controllers
• Recording Controllers
Customer Support
We provide a comprehensive after sales service via a
Worldwide Service Organization. Contact one of the following offices for details on your nearest Service and Repair Centre.
United Kingdom
ABB Limited
Tel: +44 (0)1453 826661
Fax: +44 (0)1453 827856
United States of America
ABB Inc.
Tel: +1 775 883 4366
Fax: +1 775 883 4373
Client Warranty
Prior to installation, the equipment referred to in this manual must be stored in a clean, dry environment, in accordance with the Company's published specification. Periodic checks must be made on the equipment's condition.
In the event of a failure under warranty, the following documentation must be provided as substantiation:
1. A listing evidencing process operation and alarm logs at time of failure.
2. Copies of operating and maintenance records relating to the alleged faulty unit.
ABB has Sales & Customer Support expertise in over 100 countries worldwide www.abb.com
ABB Limited
Oldends Lane, Stonehouse
Gloucestershire
GL10 3TA
UK
Tel: +44 (0)1453 826661
Fax: +44 (0)1453 827856
ABB Inc.
2175 Lockheed Way
Carson City
NV 89706
USA
Tel: +1 775 883 4366
Fax: +1 775 883 4373
The Company’s policy is one of continuous product improvement and the right is reserved to modify the information contained herein without notice.
Printed in UK (08.02)
© ABB 2002

Public link updated
The public link to your chat has been updated.
Advertisement