SPCI Manual - Test Equipment Depot

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Sensing
Pressure Indicator DPI 142/150
Standard Commands for Programmable Instruments
SCPI User Manual K381
g
i
Introduction
This technical manual provides programming and communication instructions for
the Druck DPI 142/150 Pressure Indicator compatible with the requirements of a
programming technician.
!
Scope
This technical manual contains the communications protocol for the operator
of this equipment.
!
Software
This technical manual applies to software version 2.
Safety
!
!
!
"
"
"
The manufacturer has designed this product to be safe when operated
using the procedures detailed in this manual. Do not use this product for any
other purpose than that stated.
This publication contains operating and safety instructions that must be followed
to make sure of safe operation and to maintain the equipment in a safe
condition. The safety instructions are either warnings or cautions issued to
protect the user and the equipment from injury or damage.
Use qualified* programming technicians and good engineering practice for all
procedures in this publication.
Pressure
Do not apply pressure greater the maximum safe working pressure to the
Druck DPI 142/150 Pressure Indicator.
Maintenance
The Druck DPI 142/150 Pressure Indicator must be maintained using the
manufacturer’s procedures and should be carried out by authorised service
agents or the manufacturer’s service departments.
Technical Advice
For technical advice contact the manufacturer or subsidiary.
*
A programming technician must have the necessary specialist knowledge of
programming, technical knowledge and documentation to carry out the required
work on the Druck DPI 142/150 Pressure Indicator.
Associated Druck Documents:
K343 DPI 142 User Manual
K344 DPI 150 User Manual
K382 DPI 142/150 Calibration Manual
Associated Documents:
A beginners Guide To SCPI by Barry Eppler, Published by Addison-Wesley
Publishing Company Inc. for Hewlett Packard (ISBN 0-201-56350-9).
K381 Issue No. 1
ii
Table of Contents
Preliminary pages
Section
page
Introduction
Safety
Table of contents (this table)
List of Illustrations
List of Tables
Abbreviations
Pressure measurement units
Code Definitions
Glossary
Pressure unit conversions
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Section
1
2
2.1
2.2
2.3
2.4
2.5
3
3.1
i
i
ii
iv
iv
v
v
vi
vii
ix
page
INTRODUCTION
.......................................................................................................
COMMAND STRUCTURE ...................................................................................................
Notation
............................................................................................................................
Message terminators ............................................................................................................................
Program headers
............................................................................................................................
SCPI data types
............................................................................................................................
Output Queue
............................................................................................................................
COMMAND AND QUERY SUMMARY ...............................................................................
Command structure ............................................................................................................................
CALibration
............................................................................................................................
:CAL:DIOD:ABOR
............................................................................................................................
:CAL:DIOD:ACC
............................................................................................................................
:CAL:DIOD:POIN
............................................................................................................................
:CAL:DIOD:SAMP
............................................................................................................................
:CAL:DIOD:SAMP:STAR ............................................................................................................................
:CAL:DIOD:VAL
............................................................................................................................
:CAL:PRES:ABOR
............................................................................................................................
:CAL:PRES:ACC
............................................................................................................................
:CAL:PRES:POIN
............................................................................................................................
:CAL:PRES:SAMP
............................................................................................................................
:CAL:PRES:SAMP:STAR ............................................................................................................................
:CAL:PRES:VAL
............................................................................................................................
K381 Issue No. 1
1-1
2-1
2-1
2-1
2-3
2-4
2-6
3-1
3-1
3-3
3-3
3-4
3-5
3-6
3-7
3-8
3-9
3-10
3-11
3-12
3-13
3-14
iii
Table of Contents (contd)
Section
page
3.2
4
INSTrument
............................................................................................................................
:INST:CAT
............................................................................................................................
:INST:SN
............................................................................................................................
SENSe
............................................................................................................................
:SENS:PRES
............................................................................................................................
:SENS:ALT
............................................................................................................................
:SENS:SPE
............................................................................................................................
:SENS:MACH
............................................................................................................................
:SENS:RANG
............................................................................................................................
SYSTem
............................................................................................................................
:SYST:ERR
............................................................................................................................
:SYST:PASS
............................................................................................................................
:SYST:PASS:CDIS
............................................................................................................................
:SYST:PASS:STAT
............................................................................................................................
UNIT
............................................................................................................................
:UNIT
............................................................................................................................
* Standard commands ...........................................................................................................................
*CLS
............................................................................................................................
3-15
3-15
3-16
3-17
3-17
3-18
3-19
3-20
3-21
3-22
3-22
3-24
3-25
3-26
3-27
3-27
3-29
3-29
ERRORS
4-1
............................................................................................................................
K381 Issue No. 1
iv
List of Illustrations
Figure
page
Figure 1-1
Figure 3-1
System Model ............................................................................................................................ 1-1
Command and Query Summary ...................................................................................... 3-2
List of Tables
Table
page
4-1
4-2
4-3
4-3
Errors -100 to -199
Errors -200 to -299
Errors -300 to -400
Errors +201 to +212
K381 Issue No. 1
............................................................................................................................
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4-1
4-2
4-2
4-3
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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v
Abbreviations
The following abbreviations are used in this manual; abbreviations are the same in the singular and plural.
abs
ASCII
ATE
e.g.
etc.
Fig.
ft
g
GPIB
i.e.
IEEE 488
m
max
mbar
min
No.
qa
RS232
SCM
SCPI
+ve
-ve
°C
°F
Absolute
American Standard Code for Information Interchange
Automatic test equipment
For example
And so on
Figure
Foot
Gauge
General purpose interface bus
That is
Institute of Electrical and Electronic Engineers standard 488 data
Metre
Maximum
Millibar
Minute or minimum
Number
Quasi-absolute
(combination of barometric and gauge sensor readings)
Serial communications standard
Sensor calibration module
Standard commands for programmable instruments
Positive
Negative
Degrees Celsius
Degrees Fahrenheit
Pressure measurement units
The following units are used in this manual
ATM
atmosphere
BAR
bar
CMH2O
centimetres of water at 20°C
CMHG
centimetres of mercury
FTH2O
feet of water at 20°C
FTH2O4
feet of water at 4°C
HPA
hecto Pascals
INH2O
inches of water at 20°C
INH2O4
inches of water at 4°C
INH2O60
inches of water at 60°F
INHG
inches of mercury
KG/CM2
kilogrammes per square centimetre
KG/M2
kilogrammes per square metre
KPA
kilo Pascals
LB/FT2
pounds per square foot
MH2O
metres of water
MHG
metres of mercury
MMH2O
millimetres of water
MMHG
millimetres of mercury
MPA
mega Pascals
PA
Pascals
PSI
pounds per square inch
TORR
torr
MBAR
millibar
K381 Issue No. 1
vi
Code Definitions
The following codes are used in this manual.
ALT
ACC
CAL
CAT
CLS
COND
CONF
DIOD
ERR
INST
MACH
PASS
POIN
PRES
RANG
SAMP
SENS
SPE
STAT
SYST
UNIT
VAL
Altitude
Accept
Calibration
Catalogue
Clear
Condition
Configuration
Diode
Error
Instrument
Mach number
Passive
Point
Pressure
Range
Sample
Sense
Speed
State
System
Unit of pressure
Value
K381 Issue No. 1
vii
Glossary
Terminology
The terminology used in this manual is specific and individual interpretation must
not be introduced. The terms are defined as follows:
Adjust
To bring to a more satisfactory state; to manipulate controls, levers, linkages,
etc. to return equipment from an out-of-tolerance condition to an in-tolerance
condition.
Align
To bring into line; to line up; to bring into precise adjustment , correct relative
position or coincidence.
Assemble:
To fit and secure together the several parts of; to make or form by combining
parts.
Calibrate:
To determine accuracy, deviation or variation by special measurement or by
comparison with a standard.
Check:
Make a comparison of a measure of time, pressure, temperature, resistance,
dimension or other quality with a known figure for that measurement.
Disconnect:
To detach the connection between; to separate keyed or matched equipment
parts.
Dismantle:
To take apart to the level of the next smaller unit or down to all removable parts.
Examine:
To perform a critical visual observation or check for specific conditions; to test the
condition of.
Fit:
Correctly attach one item to another.
Inspect:
Review the work carried out by Specialists to ensure it has been performed
satisfactorily.
Install:
To perform operations necessary to properly fit an equipment unit into the next
larger assembly or system.
Maintain:
To hold or keep in any particular state or condition especially in a state of
efficiency or validity.
Operate:
Make sure that an item or system functions correctly as far as possible without
the use of test equipment or reference to measurement.
Readjust:
To adjust again; to move back to a specified condition; to bring back to an
in-tolerance condition.
K381 Issue No. 1
viii
Reconnect:
To rejoin or refasten that which has been separated.
Refit:
Fit an item which has previously been removed.
Remove:
To perform operations necessary to take an equipment unit out of the next larger
assembly or system. To take off or eliminate. To take or move away.
Repair:
To restore damaged, worn out or malfunctioning equipment to a serviceable,
usable or operable condition.
Replace:
Remove an item and fit a new or a serviced item.
Reset:
To put back into a desired position, adjustment or condition.
Service:
To perform such operations as cleaning, lubricating and replenishing to prepare for
use.
Test:
Ascertain by using the appropriate test equipment that a component or system
functions correctly.
K381 Issue No. 1
ix
Pressure unit conversions
Pressure unit
Factor (Pascals)
Pressure unit
Factor (Pascals)
bar
100000
lbf/ft2
47.8803
lbf/in2 (psi)
6894.76
inHg
3386.39
mH2O
9806.65
inH2O
[1]
249.089
mbar
100
ftH2O
[1]
2989.07
kgf/cm2
98066.5
atm
kgf/m2
9.80665
pdl/ft2
101325.0
1.48816
2
mmHg
133.322
dyn/cm
0.1
cmHg
1333.22
hbar
10000000
mHg
133322.0
tonf/ft2 (UK)
107252.0
mm/H2O
[1]
9.80665
tonf/in2 (UK)
15444300
cm/H2O
[1]
98.0665
inH2O (USA) [2]
248.64135
N/m2
1
ftH2O (USA) [2]
2983.6983
hPa
100
kp/mm2
9806650
kPa
1000
kp/cm2
98066.5
MPa
1000000
kp/m2
9.80665
torr
133.322
Table of pressure units and conversion factors
Unit Conversion
To convert FROM pressure VALUE 1 in pressure UNITS 1
TO pressure VALUE 2 in pressure UNITS 2, calculate as follows:
VALUE 2
=
VALUE 1 x FACTOR 1
FACTOR 2
Note:
The conversion factor for pressure units referenced [1] are calculated for a water temperature of
4°C. Pressure units referenced [2] are calculated for a water temperature of 68°F, these units are
normally used in the USA.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
1
INTRODUCTION
1.1
General
1-1
The IEEE 488 and RS232 interfaces of the DPI 142/150 Pressure Indicators
provide remote control of the instrument from a suitable computer or
controller. The SCPI protocol enables any instrument with a SCPI facility to be
controlled using the same commands. The DPI 142/150 Pressure Indicators
use a reduced SCPI command set and the defined SCPI syntax.
The following sections describe and define each instrument command used by
the DPI 142/150 Pressure Indicators. Each section contains a quick reference
structure of the relevant commands.
CALibration
sub-system
Pressure
in
SENSe
sub-system
SYSTem
sub-system
UNITs
sub-system
Figure 1-1 System Model
System Model
SCPI starts with a high-level block diagram of the measurement functions of
the instrument. Each functional block is broken down into smaller block
diagrams. SCPI contains a hierarchy of commands called a subsystem that
maps directly to the hierarchy of the block diagram.
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
2
2-1
COMMAND STRUCTURE
This section describes the structure of the commands and data sent and
received by the DPI 142/150 Pressure Indicator.
2.1
Notation
All SCPI commands are based on a hierarchical tree structure consisting of key
words and parameters. Associated commands are grouped together under a
common node in the hierachy.
root
Level 1
Level 2
A
B
E
F
G
C
D
H
J
In the command tree the command A is the root command. A tree pointer is
used to decode the SCPI commands. At power-up the pointer goes to the root
command.
2.2
Message Terminators
All SCPI commands are terminated by line feed i.e., either <newline> (ASCII
character, decimal 10), EOI for IEEE. After receiving a termination character the
tree pointer returns to the root command.
Colon
A colon moves the current path down one level in the command tree, (e.g., the
colon in UNIT:PRESSURE specifies PRESSURE the is one level below UNIT).
When the colon is the first character of the command, it specifies that the next
command is a root level command (e.g., :UNIT specifies that UNIT is a root level
command).
K381 Issue No. 1
2-2
Command Syntax
Semicolon
A semicolon separates two commands in the same message without changing
the tree pointer.
(e.g., with reference to the tree)
:A:B:E;F:G
This equivalent to sending three messages
:A:B:E
:A:B:F
:A:B:G
SCPI commands are not case sensitive and may have a short form. In this
manual, upper case letter identify the short form.
(e.g.)
:INSTrument:SN?
Some nodes can be the default node and these key words are optional when
programming the command. The instrument processes the command, with
the same effect, with or without the option node. In this manual [] enclose
[default notes].
(e.g.)
:UNIT[:PRESsure:]?
can be sent as
:UNIT:PRESsure?
or
:UNIT?
This gives the pressure units
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
2.3
2-3
Program Headers
Program headers are keywords that identify a command, instruments accept
both upper and lower case characters in a program header. There are two
types of program header, common command headers and instrument control
headers; each header can be a command or a query.
Common Command and Query Headers
The common command and query program header syntax, specified in IEEE
488.2, are defined as follows:
Command
*<PROGRAM MNEMONIC>
Query
*<PROGRAM MNEMONIC>?
Instrument Control Command and Query Headers
The instrument control command and query program header syntax controls
and extracts data from the instrument as follows:
Command
:<MNEMONIC>
:<MNEMONIC> <PARAMETER>
Query
:<MNEMONIC>?
Queries
Most SCPI commands can be queried. A query is a command header with an
attached question mark character (?). On receiving a query command, the
current settings for the command are loaded in the output buffer. A query
does not affect the operation or set-up of the instrument.
When the parameter contains enumerated character data, both long form and
short form are recognised. Querying the command causes the return of data
in the short form.
Querying numeric parameters causes the resulting data to be returned in the
units selected by the instrument unless specified otherwise.
K381 Issue No. 1
2-4
2.4
Command Syntax
SCPI Data Types
A variety of data types can be sent to the instrument as parameters or sent
out from the instrument as response data.
Decimal Numeric Data
All normal decimal expressions are accepted including optional signs, decimal
point and scientific notation.
Note:
This includes floating point data.
The following are valid:
123
45.67
-2.6
4.6e-10
.76
A suffix multiplier can be added to the numeric value.
:CAL:PRES:VAL 100 m
would set the calibrated pressure input to 0.1 units (100m units).
The multipliers supported are:
Mnemonic
Multiplier
A
1e-18
G
1e+9
K
1e+3
M
1e-3
T
1e+12
If a real value is sent to the instrument when an integer is expected, it will be
rounded to an integer.
Integer Data
Integer data are whole numbers (containing no decimal places). A query of an
integer value returns numbers containing no decimal places.
Note:
Integer values can be specif ied in binary, octal or hexadecimal formats using
the suff ix letters (upper or lower case) B, Q and H respectively.
e.g., #B1010
binary representation of 10
#Q71
octal representation of 57
#HFA
hexadecimal representation of 250
Hexadecimal digits A-F can be in upper or lower case.
K381 Issue No. 1
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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Druck DPI 142/150 SCPI User Manual
2-5
Enumerated Character Program Data
Enumerated characters are used for data that has a finite number of values;
enumerated parameters use mnemonics to represent each valid setting.
The mnemonics have long and short forms just like command mnemonics.
Example:
:UNIT:BAR
selects the pressure units as bar.
Boolean Program Data
Boolean data can only be one of two conditions; the numbers 1 and 0.
Example:
:CALibration:DIODe:ABORT 1
A query of boolean data always returns 1 or 0.
String Data
String data can contain any of the ASCII characters. A string must start with a
double "quote" (ASCII 34) or a single `quote` (ASCII 39) and end with the same
character.
Example:
:SENse:RANGe ‘2barg’
or
:SENse “2barg”
selects the 2 bar g range.
A query of a string parameter always returns the string in double "quotes".
K381 Issue No. 1
2-6
2.5
Command Syntax
Output queue
The output queue is a text readable data queue that is read through the IEEE
488 talk command. The queue is cleared by reading all elements in it or by the
*CLS command.
Every time a query has been successfully completed, the response, in a text
readable format is placed at the end of the output queue. The output queue
can contain up to 256 characters. If there is not enough space in the output
queue for a new message, the error -350, "Queue overflow" will be placed into
the error queue and the most recent output message will be lost.
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
3
3-1
COMMAND AND QUERY SUMMARY
The following lists of all the SCPI commands and queries that apply to the
instrument.
3.1
Command structure
Some of the commands in the following summary are enabled at specific
times and conditions, most can be enabled at any time. The parameters
column shows the states, values and data contained in a command. The
command structure divides into subsystems as follows:
Command sub-system
.
:CALibration - calibration commands.
.
:INSTrument - instrument specific commands.
.
:SENSe - directs the instrument to measure selected parameters.
.
:SYSTem - errors and calibration mode.
.
:UNIT - sets the units for the instrument.
K381 Issue No. 1
3-2
Command and Query Summary
Command
Parameters
CALibration
:[PRESSure]
:ABORt
:ACCEPt
:DATA?
:ZERO
:AUTO
:AUTO?
:ABS
:VALue
Comments
zero offset
<Boolean>
on/off
<number>
offset value of
absolute range
<integer>
<Boolean>
:TIME
:STATe
INSTrument
enabled/disabled timed zero
lists ranges and details
of transducers fitted
:CATalog?
:SN
:SENSe
:PRESsure?
:ALT?
:SPEed?
:MACH?
:RANGe
:RANGe?
<string>
:SYSTem
:ERROr?
:PASS:[CEN]2317100
:PASS:CDIS 2317100
:PASS:[CEN]:STAT?
:UNIT
[:PRESsure]
[:PRESsure]?
:SPEed
:SPEed?
:ALTitude
:ALTitude?
*CLS
sensor range
error queue
<name>
<name>
ASCII (unit name)
conversion factor
<name>
standard SCPI commands
Figure 4-1 Command and Query Summary
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
3-3
CALibration
The CALibration subsystem enables the calibration of the transducers and the rate
control system, refer to the user manual for further details.
:CAL:DIOD:ABOR
Applicable to DPI 142 and Option E of the DPI 150
Command Syntax
:CALibration:DIODe:ABORt
Parameter:
Boolean
Short form:
Function:
Default:
0
1
-
enables calibration
aborts calibration
:CAL:ABOR
stops calibration
0
Description
This command is used to stop a calibration of the RPT diode, at any time, during the
procedure.
Query Syntax
n/a
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K381 Issue No. 1
3-4
Command and Query Summary
:CAL:DIOD:ACC
Applicable to DPI 142 and Option E of the DPI 150
Command Syntax
:CALibration:DIODe:ACCept
Parameter:
Short form:
Function:
Default:
:CAL:DIOD:ACC
accepts new RPT diode calibration data
Description
This command is used to accept the new two-point calibration values.
Query Syntax
n/a
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
3-5
:CAL:DIOD:POIN
Applicable to DPI 142 and Option E of the DPI 150
Command Syntax
n/a
Query Syntax
:CALibration:DIODe:POINt?
Short form:
Function:
Response:
:CAL:DIOD:POIN?
returns number of calibration points.
number
Description
This queries the required number of RPT diode calibration points.
K381 Issue No. 1
3-6
Command and Query Summary
:CAL:DIOD:SAMP
Applicable to DPI 142 and Option E of the DPI 150
Command Syntax
n/a
Query Syntax
:CALibration:DIODe:SAMPle?
Short form:
Function:
Response:
:CAL:DIOD:SAMP?
Returns number of samples remaining.
number
Description
This queries the number of samples remaining in the diode calibration procedure of
the RPT; if zero is returned the calibration voltage can be entered.
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
3-7
:CAL:DIOD:SAMP:STAR
Applicable to DPI 142 and Option E of the DPI 150
Command Syntax
:CALibration:DIODe:SAMPle:STARt
Parameter:
Short form:
Function:
Defaults:
Boolean
0
1
:CAL:DIOD:SAMP:STAR
Starts sampling
0
disable
enable (start)
Description
Starts sampling of the RPT tranducer diode voltage.
Query Syntax
n/a
K381 Issue No. 1
3-8
Command and Query Summary
:CAL:DIOD:VAL
Applicable to DPI 142 and Option E of the DPI 150
Command Syntax
:CALibration:DIODe:VALue <n> <value>
Parameter:
integer in volts
Query Syntax
:CALibration:DIODe:VALue <n>?
Short form:
Function:
Response:
:CAL:DIOD:VAL?
Description
This command and query gives the voltage output from the RPT diode.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
3-9
:CAL:PRES:ABOR
Applicable to DPI 150
Command Syntax
:CALibration:PRESsure:ABORt
Parameter:
Boolean
Short form:
Function:
Default:
0
1
-
enables calibration
aborts calibration
:CAL:ABOR
stops calibration
0
Description
This command is used to stop the current pressure calibration, at any time, during
the procedure.
Query Syntax
n/a
K381 Issue No. 1
3 - 10
Command and Query Summary
:CAL:PRES:ACC
Applicable to DPI 150
Command Syntax
:CALibration:PRESsure:ACCept
Parameter:
Short form:
Function:
Default:
:CAL:PRE:ACC
accepts new pressure calibration values
Description
This command is used to accept the new two-point calibration values.
Query Syntax
n/a
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
3 - 11
:CAL:PRES:POIN
Applicable to DPI 142 and Option E of the DPI 150
Command Syntax
n/a
Query Syntax
:CALibration:DIODe:POINt?
Short form:
Function:
Response:
:CAL:DIOD:POIN?
returns number of calibration points.
number
Description
This queries the required number of RPT diode calibration points.
K381 Issue No. 1
3 - 12
Command and Query Summary
:CAL:PRES:SAMP
Applicable to DPI 142 and Option E of the DPI 150
Command Syntax
n/a
Query Syntax
:CALibration:DIODe:SAMPle?
Short form:
Function:
Response:
:CAL:DIOD:SAMP?
Returns number of samples remaining.
number
Description
This queries the number of samples remaining in the diode calibration procedure of
the RPT; if zero is returned the calibration voltage can be entered.
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
3 - 13
:CAL:PRES:SAMP:STAR
Applicable to DPI 142 and Option E of the DPI 150
Command Syntax
:CALibration:DIODe:SAMPle:STARt
Parameter:
Short form:
Function:
Defaults:
Boolean
0
1
:CAL:DIOD:SAMP:STAR
Starts sampling
0
disable
enable (start)
Description
Starts sampling of the RPT tranducer diode voltage.
Query Syntax
n/a
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K381 Issue No. 1
3 - 14
Command and Query Summary
:CAL:PRES:VAL
Command Syntax
:CALibration:PRESsure:VALue <n> <value>
Parameter:
integer
Short form:
Function:
Defaults:
CAL:PRES:VAL
Enters nth pressure value in mbar
zero
Query Syntax
:CALibration:PRESsure:VALue <n>?
Short form:
Function:
Response:
:CAL:PRES:VAL?
Queries nth entered pressure value in mbar
<n> <value>
Description
This command enters calibration pressure values up to the nth number. The query
gives the calibration pressure values up to the nth number.
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INSTrument
The INSTrument subsystem gets information about the configuration of the
instrument and contains query only commands.
:INST:CAT
Command Syntax
n/a
Query Syntax
:INSTrument:CATalog?
Short form:
Function:
Response:
:INST:CAT?
Query ranges fitted
A list of comma separated strings of ranges fitted.
Description
This command returns a list of ranges fitted to the instrument. The reply is a comma
separated list of strings representing each range.
e.g.
“2barg”,”3.5barqa”.
If a barometer is fitted, the string “BAROMETER” is added to the list.
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Command and Query Summary
:INST:SN
Command Syntax
n/a
Query Syntax
:INStrument:SN?
Short form:
Function:
Response:
:INST:SN?
Used to query the serial number of the instrument.
Asks for serial number
Integer representing serial number
Description
This query only command returns the serial number of the instrument.
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SENSe
The SENSe subsystem selects and configures the sensing functions of the
instrument.
:SENS:PRESsure
Command Syntax
n/a
Query Syntax
:SENSe:PRESsure?
Short form:
Function:
Response:
:SENS:PRES?
Used to query the current pressure reading of the instrument.
<n> pressure
Description
This query only command returns the pressure reading of the instrument.
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Command and Query Summary
:SENS:ALTitude
Command Syntax
n/a
Query Syntax
:SENSe:ALTitiude?
Short form:
Function:
Response:
:SENS:ALT?
Used to query the current altitude pressure reading of the
instrument.
Altitude reading in aeronautical units.
Description
This query only command returns the altitude reading in aeronautical units of the
instrument.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
3 - 19
:SENS:SPEed
Command Syntax
n/a
Query Syntax
:SENSe:SPEed?
Short form:
Function:
Response:
:SENS:SPE?
Used to query the current speed reading of the instrument.
Speed reading in aeronautical units.
Description
This query only command returns the current speed reading in aeronautical units of
the instrument.
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Command and Query Summary
:SENS:MACH
Command Syntax
n/a
Query Syntax
:SENSe:MACH?
Short form:
Function:
Response:
:SENS:MACH?
Used to query the current Mach reading of the instrument.
Speed reading in Mach number.
Description
This query only command returns the current speed reading in Mach number.
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:SENS:RANGe
Command Syntax
n/a
Query Syntax
:SENSe:RANGe?
Short form:
Function:
Response:
:SENS:RANG?
Used to query the current pressure range of the instrument.
Returns the current pressure measurement range.
Description
This query only command returns the current pressure measurement range of the
instrument.
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Command and Query Summary
SYSTem
The SYSTem subsystem consists of general purpose commands.
:SYST:ERR
Command Syntax
n/a
Query Syntax
:SYStem:ERRor?
Query
Short form:
Function:
K381 Issue No. 1
:ERRor?
:SYST:ERR?
Gets next error from the error queue
Druck DPI 142/150 SCPI User Manual
Response:
Description
3 - 23
The follow list of errors are available
-102, “Syntax error”
-104, “Data type error”
-108, “Parameter not allowed”
-109, “Missing parameter”
-110, “Command Header Error”
-111, “Header Separator Error”
-112, “Program mnemonic too long”
-113, “Undefined header”
-114, “Header suffix out of range”
-120, “Numeric data error”
-121, “Invalid character in number”
-123, “Exponent too large”
-124, “Too many digits”
-128, “Numeric data not allowed”
-130, “Suffix error”
-131, “Invalid suffix”
-134, “Suffix too long”
-138, “Suffix not allowed”
-140, “Character data error”
-141, “Invalid character data”
-144, “Character data too long”
-148, “Character data not allowed”
-150, “String data error”
-151, “Invalid string data”
-158, “String data not allowed”
-200, “Execution error”
-201, “Invalid while in local”
-202, “Settings lost due to rtl”
-220, “Parameter error”
-222, “Data out of range”
-223, “Too much data”
-224, “Illegal parameter value”
-300, “Calibration error”
-310, “System error”
-350, “Queue overflow”
-400, “Query error”
201 , “Query only”
202 , “No query allowed”
203 , “Parameter(s) not expected”
207 , “Enumerated value not in union”
208 , “Illegal number of parameters”
210 , “Run out of memory handle”
211 , “Unit not matched”
212 , “Unit not required”
This command queries the error queue which holds up to five errors. The instrument
returns the message “No error” when no more errors are in the queue.
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K381 Issue No. 1
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Command and Query Summary
:SYST:PASS
Command Syntax
:SYSTem:PASS:[CEN] 2317100
Parameter:
Short form:
Function:
n/a
:SYST:PASS
Enters calibration mode.
Description
This command enters calibration mode.
Query Syntax
n/a
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:SYST:PASS:CDIS
Command Syntax
:SYSTem:PASS:CDIS 2317100
Parameter:
Short form:
Function:
n/a
SYST:PASS:CDIS
Exits calibration mode
Description
This command exits calibration mode.
Query Syntax
n/a
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Command and Query Summary
:SYST:PASS:STAT
Command Syntax
n/a
Query Syntax
:SYSTem:PASS:[CEN] STAT?
Short form:
Function:
Response:
SYST:PASS:STAT?
Queries calibration mode
0 indicates not in calibration mode
1 indicates in calibration mode
Description
This command indicates the calibration mode.
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UNIT
The UNIT sub-system configures the instrument’s pressure measurement units.
:UNIT
Command Syntax
:UNIT <name>
Parameter: <name>
BAR
PA
HPA
KPA
MPA
MBAR
KG/CM2
KG/M2
MMHG
CMHG
MHG
MMH2O
CMH2O
MH2O
TORR
ATM
PSI
LB/FT2
INHG
INH2O
INH2O4
FTH2O
FTH2O4
USER1
USER2
Note:
See Pressure Measurements Units on page v for a def inition of these parameters.
Short form
Function:
:UNIT <name>
Selects pressure units
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Command and Query Summary
Query Syntax
:UNIT[:PRESsure]?
Short form:
Function:
Response:
:UNIT?
Query what pressure units are selected
name as above
Description
This command selects the current pressure units; USER1 and USER2 are the user
defined units.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
3.2
3 - 29
Standard Commands
The commands identified with * are SCPI standard commands.
*CLS
Command Syntax
*CLS
Parameter:
Short form
Function:
none
*CLS
This command clears the status registers in the status reporting
system.
Query Syntax
n/a
Description
Clears all errors..
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
4
4-1
ERRORS
Negative error numbers are used for standard SCPI errors. Positive error
numbers are device specific errors. Following the error number, a message
describes the error. An error, when detected, is held in the error queue.
When SYST:ERR? is sent any error in the error queue sets the error bit in the
event status register.
Error numbers
Each error detected causes an error number with an error message to be
returned as follows:
Error
code
Error message
Error
code
Error message
-102 -102, Syntax error
-134 -134, Suffix too long
-104 -104, Data type error
-138 -138, Suffix not allowed
-108 -108, Parameter not allowed
-140 -140, Character data error
-109 -109, Missing parameter
-141 -141, Invalid character data
-110 -110, Command Header Error
-144 -144, Character data too long
-111 -111, Header Separator Error
-148 -148, Character data not allowed
-112 -112, Program mnemonic too long
-150 -150, String data error
-113 -113, Undefined header
-151 -151, Invalid string data
-114 -114, Header suffix out of range
-158 -158, String data not allowed
-120 -120, Numeric data error
-160 -160, Block data error
-121 -121, Invalid character in number
-161 -161, Invalid block data
-123 -123, Exponent too large
-168 -168, Block data not allowed
-124 -124, Too many digits
-170 -170, Expression error
-128 -128, Numeric data not allowed
-171 -171, Invalid expression
-130 -130, Suffix error
-178 -178, Expression data not allowed
-131 -131, Invalid suffix
Table 4-1 Errors -100 to -199
K381 Issue No. 1
4-2
Error Codes
Error
code
Error
code
Error message
Error message
-200 -200, Execution error
-256 -256, File name not found
-220 -220, Parameter error
-257 -257, File name error
-221 -221, Settings conflict
-260 -260, Expression Error
-222 -222, Data out of range
-261 -261, Math error in expression
-223 -223, Too much data
-280 -280, Program error
-224 -224, Illegal parameter value
-281 -281, Cannot create program
-230 -230, Data corrupt or stale
-282 -282, Illegal program name
-231 -231, Data questionable
-283 -283, Illegal variable name
-240 -240, Hardware error
-284 -284, Program currently running
-241 -241, Hardware missing
-285 -285, Program syntax error
-254 -254, Media full
-286 -286, Program runtime error
Table 4-2 Errors -200 to -299
Error code
Error message
-300
-300, Device-specific error
-310
-310, System error
-311
-311, Memory error
-313
-313, Calibration memory lost
-314
-314, Save/recall memory lost
-315
-315, Configuration memory lost
-350
-350, Queue overflow
-400
-400, Query error
Table 4-3 Errors -300 to -400
K381 Issue No. 1
Druck DPI 142/150 SCPI User Manual
Error code
4-3
Error message
201
201, Query only
202
202, No query allowed
203
203, Paramerter(s) not expected
208
208, Illegal number of parameters
210
210, Run out of memory handle
211
211, Unit not matched
212
212, Unit not required
Table 4-4 Errors +201 to +212
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K381 Issue No. 1
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