Druck DPI 142 Operating Manual

Pressure Indicator DPI 142/150

Standard Commands for Programmable Instruments
SCPI User Manual K381

g

Infrastructure

Sensing

©2005 General Electric Company. All rights reserved.

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

Table of Contents

Preliminary p ages

Section page

Introduction ............................................................................................................................ i

Safety ............................................................................................................................ i

Table of contents (this table) ............................................................................................................................ ii

List of Illustrations ............................................................................................................................ iv

List of Tables ............................................................................................................................ iv

Abbreviations ............................................................................................................................ v

Pressure measurement units ............................................................................................................................ v

Code Definitions ............................................................................................................................ vi

Glossary ............................................................................................................................ vii

Pressure unit conversions ............................................................................................................................ ix

Section page

1 INTRODUCTION ....................................................................................................... 1-1

2 COMMAND STRUCTURE ................................................................................................... 2-1

2.1 Notation ............................................................................................................................ 2-1

2.2 Message terminators ............................................................................................................................ 2-1

2.3 Program headers ............................................................................................................................ 2-3

2.4 SCPI data types ............................................................................................................................ 2-4

2.5 Output Queue ............................................................................................................................ 2-6

3 COMMAND AND QUERY SUMMARY ............................................................................... 3-1

3.1 Command structure ............................................................................................................................ 3-1

CALibration ............................................................................................................................ 3-3

:CAL:DIOD:ABOR ............................................................................................................................ 3-3

:CAL:DIOD:ACC ............................................................................................................................ 3-4

:CAL:DIOD:POIN ............................................................................................................................ 3-5

:CAL:DIOD:SAMP ............................................................................................................................ 3-6

:CAL:DIOD:SAMP:STAR ............................................................................................................................ 3-7

:CAL:DIOD:VAL ............................................................................................................................ 3-8

:CAL:PRES:ABOR ............................................................................................................................ 3-9

:CAL:PRES:ACC ............................................................................................................................ 3-10

:CAL:PRES:POIN ............................................................................................................................ 3-11

:CAL:PRES:SAMP ............................................................................................................................ 3-12

:CAL:PRES:SAMP:STAR ............................................................................................................................ 3-13

:CAL:PRES:VAL ............................................................................................................................ 3-14

ii

K381 Issue No. 1

iii

Section

Table of Contents (contd)

page

INSTrument ............................................................................................................................ 3-15

:INST:CAT ............................................................................................................................ 3-15

:INST:SN ............................................................................................................................ 3-16

SENSe ............................................................................................................................ 3-17

:SENS:PRES ............................................................................................................................ 3-17

:SENS:ALT ............................................................................................................................ 3-18

:SENS:SPE ............................................................................................................................ 3-19

:SENS:MACH ............................................................................................................................ 3-20

:SENS:RANG ............................................................................................................................ 3-21

SYSTem ............................................................................................................................ 3-22

:SYST:ERR ............................................................................................................................ 3-22

:SYST:PASS ............................................................................................................................ 3-24

:SYST:PASS:CDIS ............................................................................................................................ 3-25

:SYST:PASS:STAT ............................................................................................................................ 3-26

UNIT ............................................................................................................................ 3-27

:UNIT ............................................................................................................................ 3-27

3.2 * Standard commands ........................................................................................................................... 3-29

*CLS ............................................................................................................................ 3-29

4 ERRORS ............................................................................................................................ 4-1

K381 Issue No. 1

List of Illustrations

Figure
page

Figure 1-1 System Model ............................................................................................................................ 1-1

Figure 3-1 Command and Query Summary ...................................................................................... 3-2

iv

Table

List of Tables

pa ge

4-1 Errors -100 to -199 ............................................................................................................................ 4-1

4-2 Errors -200 to -299 ............................................................................................................................ 4-2

4-3 Errors -300 to -400 ............................................................................................................................ 4-2

4-3 Errors +201 to +212 ............................................................................................................................ 4-3

K381 Issue No. 1

v

Abbreviations

The following abbreviations are used in this manual; abbreviations are the same in the singular and plural.

abs Absolute
ASCII American Standard Code for Information Interchange
ATE Automatic test equipment
e.g. For example
etc. And so on
Fig. Figure
ft Foot
g Gauge
GPIB General purpose interface bus
i.e. That is
IEEE 488 Institute of Electrical and Electronic Engineers standard 488 data
m Metre
max Maximum
mbar Millibar
min Minute or minimum
No. Number
qa Quasi-absolute (combination of barometric and gauge sensor readings)
RS232 Serial communications standard
SCM Sensor cal ibration module
SCPI Standard commands for programmable instruments
+ve Positive

-ve Negative
°C Degrees Celsius
°F 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

Code Def initions

The following codes are used in this manual.

ALT Altitude
ACC Accept
CAL Calibration
CAT Catalogue
CLS Clear
COND Condition
CONF Configuration
DIOD Diode
ERR Error
INST Instrument
MACH Mach number
PASS Passive
POIN Point
PRES Pressure
RANG Range
SAMP Sample
SENS Sense
SPE Speed
STAT State
SYST System
UNIT Unit of pressure
VAL Value

vi

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

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.

viii

K381 Issue No. 1

ix

Pressure unit conversions

rab 000001 tf/fbl

2

ni/fbl

tinuerusserP )slacsaP(rotcaF tinuerusserP )slacsaP(rotcaF

2

)isp( 67.4986 gHni 93.6833

3088.74

O 56.6089 Hni

Hm

2

rabm 001 Htf

2

mc/fgk

2

m/fgk

5.66089 mta 0.523101

56608.9 tf/ldp

gHmm 223.331 mc/nyd

2

2

]1[O 980.942

]1[O 70.9892

2

2

gHmc 22.3331 rabh 00000001

gHm 0.223331 tf/fnot

H/mm

H/mc

2

2

m/N

]1[O 56608.9 ni/fnot

2

]1[O 5660.89 Hni

1 Htf

aPh 001 mm/pk

aPk 0001 mc/pk

aPM 0000001 m/pk

2

)KU( 0.252701

2

)KU( 00344451

2

2

2

2

2

rrot 223.331

Table of pressure units and conversion factors

61884.1

1.0

]2[)ASU(O 53146.842

]2[)ASU(O 3896.3892

0566089

5.66089

56608.9

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 US A.

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x

K381 Issue No. 1

Druck DPI 142/150 SCPI User Manual 1 - 1

UNITs

sub-system

CALibration
sub-system

SENSe

sub-system

SYSTem

sub-system

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.

1 INTRODUCTION

1.1 General

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.

Pressure
in

Figure 1-1 System Model

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1 - 2 Introduction

intentionally left blank

K381 Issue No. 1

Druck DPI 142/150 SCPI User Manual 2 - 1

root Level 1 Level 2

A B

C

D

E

F

G

H

J

2 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.

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

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

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.

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2 - 4 Command Syntax

2.4 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 specified 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.

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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 Command Syntax

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 .

2.5 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.

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Druck DPI 142/150 SCPI User Manual 3 - 1

3 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 Comments

CALibration

:[PRESSure]
:ABORt
:ACCEPt
:DATA?
:ZERO zero offset

:AUTO
:AUTO? <Boolean> on/off

:ABS
:VALue <number> offset value of

absolute range

:TIME <integer>

:STATe <Boolean> enabled/disabled timed zero

INSTrument lists ranges and details

of transducers fitted

:CATalog?
:SN

:SENSe

:PRESsure?
:ALT?
:SPEed?
:MACH?
:RANGe <string> sensor range
:RANGe?

:SYSTem

:ERROr? error queue
:PASS:[CEN]2317100
:PASS:CDIS 2317100
:PASS:[CEN]:STAT?

:UNIT

[:PRESsure] <name>
[:PRESsure]?
:SPEed <name> ASCII (unit name)
:SPEed? conversion factor

:ALTitude <name>

:ALTitude?

*CLS standard SCPI commands

Figure 4-1 Command and Query Summary

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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 0 - enables calibration

1 - aborts calibration
Short form: :CAL:ABOR
Function: stops calibration
Default: 0

Description

This command is used to stop a calibration of the RPT diode, at any time, during the
procedure.

Query Syntax

n/a

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: :CAL:DIOD:ACC
Function: accepts new RPT diode calibration data
Default:

Description

This command is used to accept the new two-point calibration values.

Query Syntax

n/a

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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: :CAL:DIOD:POIN?
Function: returns number of calibration points.
Response: 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: :CAL:DIOD:SAMP?
Function: Returns number of samples remaining.
Response: 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.

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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: Boolean 0 - disable

1 - enable (start)
Short form: :CAL:DIOD:SAMP:STAR
Function: Starts sampling
Defaults: 0

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: :CAL:DIOD:VAL?
Function:
Response:

Description

This command and query gives the voltage output from the RPT diode.

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Druck DPI 142/150 SCPI User Manual 3 - 9

:CAL:PRES:ABOR

Applicable to DPI 150

Command Syntax

:CALibration:PRESsure:ABORt

Parameter:

Boolean 0 - enables calibration

1 - aborts calibration

Short form: :CAL:ABOR
Function: stops calibration
Default: 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: :CAL:PRE:ACC
Function: accepts new pressure calibration values
Default:

Description

This command is used to accept the new two-point calibration values.

Query Syntax

n/a

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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: :CAL:DIOD:POIN?
Function: returns number of calibration points.
Response: 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: :CAL:DIOD:SAMP?
Function: Returns number of samples remaining.
Response: 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.

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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: Boolean 0 - disable

1 - enable (start)
Short form: :CAL:DIOD:SAMP:STAR
Function: Starts sampling
Defaults: 0

Description

Starts sampling of the RPT tranducer diode voltage.

Query Syntax

n/a

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3 - 14 Command and Query Summary

:CAL:PRES:VAL

Command Syntax

:CALibration:PRESsure:VALue <n> <value>

Parameter: integer

Short form: CAL:PRES:VAL
Function: Enters nth pressure value in mbar
Defaults: zero

Query Syntax

:CALibration:PRESsure:VALue <n>?

Short form: :CAL:PRES:VAL?
Function: Queries nth entered pressure value in mbar
Response: <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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Druck DPI 142/150 SCPI User Manual 3 - 15

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: :INST:CAT?
Function: Query ranges fitted
Response: 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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3 - 16 Command and Query Summary

:INST:SN

Command Syntax

n/a

Query Syntax

:INStrument:SN?

Short form: :INST:SN?
Function: Used to query the serial number of the instrument.

Asks for serial number

Response: Integer representing serial number

Description

This query only command returns the serial number of the instrument.

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Druck DPI 142/150 SCPI User Manual 3 - 17

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: :SENS:PRES?
Function: Used to query the current pressure reading of the instrument.
Response: <n> pressure

Description

This query only command returns the pressure reading of the instrument.

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3 - 18 Command and Query Summary

:SENS:ALTitude

Command Syntax

n/a

Query Syntax

:SENSe:ALTitiude?

Short form: :SENS:ALT?
Function: Used to query the current altitude pressure reading of the

instrument .

Response: Altitude reading in aeronautical units.

Description

This query only command returns the altitude reading in aeronautical units of the
instrument .

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Druck DPI 142/150 SCPI User Manual 3 - 19

:SENS:SPEed

Command Syntax

n/a

Query Syntax

:SENSe:SPEed?

Short form: :SENS:SPE?
Function: Used to query the current speed reading of the instrument.
Response: 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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:SENS:MACH

Command Syntax

n/a

Query Syntax

:SENSe:MACH?

Short form: :SENS:MACH?
Function: Used to query the current Mach reading of the instrument.
Response: 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: :SENS:RANG?
Function: Used to query the current pressure range of the instrument .
Response: Returns the current pressure measurement range.

Description

This query only command returns the current pressure measurement range of the
instrument .

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SYSTem

The SYSTem subsystem consists of general purpose commands.

:SYST:ERR

Command Syntax

n/a

Query Syntax

:SYStem:ERRor?

Query :ERRor?
Short form: :SYST:ERR?
Function: Gets next error from the error queue

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Response: 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, Suff ix 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

Description

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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:SYST:PASS

Command Syntax

:SYSTem:PASS:[CEN] 2317100

Parameter: n/a
Short form: :SYST:PASS
Function: 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: n/a
Short form: SYST:PASS:CDIS
Function: Exits calibration mode

Description

This command exits calibration mode.

Query Syntax

n/a

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:SYST:PASS:STAT

Command Syntax

n/a

Query Syntax

:SYSTem:PASS:[CEN] STAT?

Short form: SYST:PASS:STAT?
Function: Queries calibration mode
Response: 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 :UNIT <name>
Function: Selects pressure units

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Query Syntax

:UNIT[:PRESsure]?

Short form: :UNIT?
Function: Query what pressure units are selected
Response: name as above

Description

This command selects the current pressure units; USER1 and USER2 are the user
defined units.

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3.2 Standard Commands

The commands identified with * are SCPI standard commands.

*CLS

Command Syntax

*CLS

Parameter: none
Short form *CLS
Function: This command clears the status registers in the status reporting

system.

Query Syntax

n/a

Description

Clears all errors..

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4 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:

rorrE

edoc

201- rorrexatnyS,201- 431- gnolootxiffuS,431-

401- rorreepytataD,401- 831- dewollatonxiffuS,831-

801- dewollatonretemaraP,801- 041- rorreatadretcarahC,041-

901- retemarapgnissiM,901- 14

011- rorrEredaeHdnammoC,011- 441- gnolootatadretcarahC,441-

111- rorrErotarapeSredaeH,111- 841- dewollatonatadretcarahC,841-

211- gnolootcinomenmmargorP,211- 051- rorreatadgnirtS,051-

311- redaehdeni

411- egnarfotuoxiffusredaeH,411- 851- dewollatonatadgnirtS,851-

021- rorreatadciremuN,021- 061- rorreatadkcolB,061-

121- rebmunniretcarahcdilavnI,121- 161- atadkcolbdilavnI,161-

321- egraloot

421- stigidynamooT,421- 071- rorrenoisserpxE,071-

821- dewollatonatadciremuN,821- 171- noisserpxedilavnI,171-

031- rorrexiffuS,031- 871- dewollatonatadnoisserpxE,871-

131- xiffusdilavnI,

131-

fednU,311- 151- atadgnirtsdilavnI,151-

tnenopxE,321- 861- dewollatonatadkcolB,861-

egassemrorrE

rorrE

edoc

1- atadretcarahcdilavnI,141-

egassemrorrE

Table 4-1 Errors -100 to -199

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4 - 2 Error Codes

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rorrE

edoc

egassemrorrE

rorrE

edoc

egassemrorrE

002- rorrenoitucexE,002- 652- dnuoftonemaneliF,652-

022- rorreretema

raP,022- 752- rorreemaneliF,752-

122- tcilfnocsgnitteS,122- 062- rorrEnoisserpxE,062-

222- egnarfotuoataD,222- 162- noi

sserpxenirorrehtaM,162-

322- atadhcumooT,322- 082- rorremargorP,082-

422- eulavretemaraplagellI,422- 182- margorpetaerctonnaC,182-

032- elatsrotpurrocataD,032- 282- emanmargorplagellI,282-

132- elbanoitseuqataD,132- 382- emanelbairavlagellI,382-

042- rorreerawdraH,042- 482- gninnuryltnerrucmargorP,482-

142- gnissimerawdraH,142- 582- rorrexatny

smargorP,582-

452- llufaideM,452- 682- rorreemitnurmargorP,682-

Table 4-2 Errors -200 to -299

Table 4-3 Errors -300 to -400

edocrorrE egassemrorrE

003- rorrecificeps-eciveD,003-

013- rorremetsyS,013-

113- rorreyromeM,113-

313- tsolyromemno

itarbilaC,313-

413- tsolyromemllacer/evaS,413-

513- tsolyromemnoitarugifnoC,513-

053- wolfrevoeueuQ,053-

004- ror

reyreuQ,004-

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edocrorrE egassemrorrE

102 ylnoyreuQ,102

202 dewollayreuqoN,202

302 detcepxeton)s(retremaraP,302

802 sretemarapfore

bmunlagellI,802

012 eldnahyromemfotuonuR,012

112 dehctamtontinU,112

212 deriuqertontinU,212

Table 4-4 Errors +201 to +212

4 - 4 Error Codes

intentionally left blank

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