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gGE Druck - GE Measurement & Control

1. K257 Issue No 2 5 10 Aeronautical Command Reference SOUR ALT SLEW Command Syntax SOURCe ALTitude SLEW number Parameter number Altitude rate set point in current units per second Short form SOUR ALT SLEW number Function Sets the altitude rate set point Default 0 01 Query Syntax SOURce ALT SLEW Short form SOUR ALT SLEW Function Queries the altitude rate set point Response Altitude rate set point in current units per second Description This command sets the altitude rate ROC or vertical speed set point K257 Issue No 2 Druck DPI 515 SCPI User Manual 5 1 SOUR MACH IMM AMPL Command Syntax SOURCe MACHJ IMMediate AMPLitude number Parameter number Mach set point Short form SOUR MACH number Function Sets the Mach number set point Default 0 0 Query Syntax SOURce MACH Short form SOUR MACH Function Queries the set point Mach number Response Mach number set point Description This command sets the Mach number set point K257 Issue No 2 5 12 Aeronautical Command Reference SOUR MACH REF Command Syntax n a Parameter Short form Function Default Query Syntax SOURce MACH REFerence Short form SENS MACH REF Function Queries the Mach number reference pressure Response Returns the Mach number reference pressure Description This query only command returns the Mach number reference pressure in the currently se
2. Short form SENS ALT SLEW Function Queries the ROC vertical speed value Response Returns the altitude rate of climb in units per second Description This query only command returns the aeronautical altitude rate of climb ROC or vertical speed in units per second K257 Issue No 2 Druck DPI 515 SCPI User Manual 5 5 SENS MACH Command Syntax n a Parameter Short form Function Default Query Syntax SENSe MACH Short form SENS MACH Function Queries the Mach number reading Response Returns the Mach number reading when Mach number range is selected Description This query only command returns the aeronautical Mach number reading The Mach number range must be selected for a response from this command K257 Issue No 2 5 6 Aeronautical Command Reference SENS MACH SLEW Command Syntax n a Parameter Short form Function Default Query Syntax SENSe MACH SLEW Short form SENS MACH SLEW Function Queries the rate of change of Mach number Response Returns the rate of change of Mach number in Mach number per second Description This query only command returns the Mach number rate of change in Mach number per second K257 Issue No 2 Druck DPI 515 SCPI User Manual 5 7 SENS SPE Command Syntax n a Parameter Short form Function Default Query Syntax SENSe SPEed Short form SENS SPE Function Queries the airspeed value Res
3. Query lt PROGRAM MNEMONIC gt 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 lt MNEMONIC gt PARAMETER Query lt MNEMONIC gt Instrument command headers can have a numeric suffix to identify each of several cases of the same header the numeric suffix applies to both the long and short forms All commands headers without a numeric suffix assume the value 1 e g OUTPut LOGic1 LEVel is the same as OUTPut LOGic LEVel 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 K257 Issue No 2 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 d
4. 2 OUTP 1 CHRS 10 turn controller on IOCTL 2 OUTP CHR 10 gend controller state query PRINT IOCTLS 2 read reply of controller state query AS gens CHR 10 data to query pressure DO IF INKEYS a THEN AS sens CHR 10 query pressure IF INKEYS b THEN AS query time and date IOCTL 2 AS PRINT IOCTLS 2 read the device SLEEP 1 wait for 1 second gyst time date CHR 10 LOOP WHILE INKEYS lt gt q IOCTL 2 OUTP O CHR 10 turn controller off IOCTL 2 OUTP CHR 10 send controller state query PRINT IOCTLS 2 read reply of controller state query CLOSE 1 CLOSE 2 END K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 1 4 4 1 COMMAND AND QUERY SUMMARY The following lists of all the SCPI commands and queries that apply to the instrument 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 INPut reads the logical input INSTrument instrument specific commands OUTPut controls the output pressure and logical outputs SENSe directs the instrument to measure selected parameters SOURce covers the commands that control the pressure
5. 223 Too much data 224 Illegal parameter value 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 K257 Issue No 2 Command Reference SYST VERS Command Syntax n a Parameter Short form Function Query Syntax SYStem VERSion Short form SYST VERS Function Returns the SCPI version Response version number Description Replies with the SCPI version number K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 51 The UNIT sub system configures the instrument s pressure measurement units UNIT PRES Command Syntax UNIT PRESsure name Parameter name ATM BAR CMH20 CMHG FTH2O FTH204 HPA INH20 INH204 INH2060 INHG KG CM2 KG M2 KPA LB FT2 MH20 MHG MMH20 MMHG MPA PA PSI TORR MBAR USER1 USER2 Short form UNIT lt name gt Function Selects pressure units K257 Issue No 2 4 52 Command Reference Query Syntax UNIT PRESsure Short form UNIT Function Query what pressure units are selected Res
6. 248 64135 N m 1 ftH O USA 2 2983 6983 hPa 100 kp mm 9806650 kPa 1000 kp cm 98066 5 MPa 1000000 kp m 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 Note VALUE 2 VALUE 1 x FACTOR 1 FACTOR 2 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 K257 Issue No 2 Druck DPI 515 SCPI User Manual 1 1 1 INTRODUCTION 1 1 General The IEEE 488 and RS232 interfaces of the DPI 515 Controller Calibrator 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 515 Controller Calibrator use the full SCPI command set and the defined SCPI syntax The following sections describe and define each instrument command used by the DPI 515 Controller Calibrator The commands for the aeronautical option and the sensor calibration module option are described and defined in separate sections Each section contains a quick reference structure of the relevant commands logic INPut CALibrate SYSTem sub system sub sys
7. set and when read returns 0 The condition register is defined as follows Vent complete This signal occurs when the controller has been requested to vent and the vent has completed or timed out Range change complete This signal occurs when the controller has been requested to perform a range change and the range change is complete In Limits reached This signal is set every time the controlled pressure is within the specified limits The signal is only generated if the pressure has been within limits for a user defined wait time period Zero complete This signal is generated when a manual or timed zero is complete If the zero times out then this signal is also generated K257 Issue No 2 3 6 Status System Vent complete Range change complete In limits reached Zero complete Auto zero started Fill time timed out Reserved returns 0 Reserved returns 0 Switch contacts changed state Reserved returns 0 Reserved returns 0 Reserved returns 0 Reserved returns 0 Reserved returns 0 Reserved returns 0 Reserved returns 0 Table 3 2 Operation Status Register Auto zero started When the controller is in the auto zero mode this signal indicates that the auto zero process has started Thezero complete signal indicates that the zero process has finished Fill timed out If a set point has been requested and the set point cannot be achieved within the fill timeout time the fill timed out si
8. 100 to 199 K257 Issue No 2 7 2 Error Codes Pror Error message Error Error message code g code Table 7 2 Errors 200 to 299 Table 7 3 Errors 300 to 400 K257 Issue No 2 Druck DPI 515 SCPI User Manual Table 7 4 Errors 201 to 212 K257 Issue No 2 7 4 Error Codes K257 Issue No 2
9. Druck DPI 515 SCPI User Manual 4 11 INST LIM Command Syntax n a Parameter Short form Function Query Syntax INSTrument LIMits x Short form INST Function Queries the upper and lower full scale limits of the fitted ranges The index number x is used to index into the list of available ranges Response A string representing the range a number representing the upper full scale and a number representing the lower full scale Description This query only command return the name of the range as a string and the upper and lower pressure limits in the selected units e g INST3 2barg 2 0 1 0 K257 Issue No 2 4 12 Command Reference INST SN Command Syntax n a Parameter Short form Function 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 K257 Issue No 2 Druck DPI 515 SCPI User Manual Command Syntax n a Parameter Short form Function Query Syntax INSTrument UNIT x Short form INST UNIT Function Queries the available units The number x is the index into the units Response Enumerated type of the unit ATM BAR CMH20 CMHG FTH2O FTH204 HPA INH2O INH204 INH2O60 INHG KG CM2 KG M2 KPA LB FT2 MH20 MHG MMH20 MMHG M
10. FS maximum 100 FS Query Syntax SOURce PRESsure INLimits Short form SOUR INL Function Query in limits value Response Number representing in limits value as FS Description Sets the in limits value K257 Issue No 2 4 32 Command Reference SOUR PRES INL TIME Command Syntax SOURce PRESsure INLimits TIME lt number gt Parameter number in limits time in seconds Short form SOUR INL TIME number Function Sets the time that the pressure has to be within limits before generating a service request Default 2 seconds minimum 2 seconds maximum 999 seconds Query Syntax SOURce PRESsure INLimits TIME Short form SOUR INL TIME Function Query in limits timers Response Number representing in limits time in seconds Description Sets the in limits timer value K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 33 SOUR PRES LEV IMM AMPL Command Syntax SOURce PRESsure LEVel IMMediate AMPLitude number Parameter number Pressure in current units Short form SOUR lt number gt Function Set the pressure set point Default 0 0 Query Syntax SOURce PRESsure LEVel IMMediate AMPLitude Short form SOUR Function Programmable set point value Response Pressure set point in current units Description This command sets the pressure set point Controllers must be ON before using this command Use OUTPut STATe to turn the control
11. It is possible for the user interface to be set to manual range while the communications can be set to auto range changing K257 Issue No 2 4 38 Command Reference SOUR RANG LOW Command Syntax n a Parameter Short form Function Query Syntax SOURCe PRESsure RANGe LOW Short form SOUR RANGE LOW Function This query only command returns the lowest set point pressure the controlled range can accept Response String representing lowest pressure acceptable Description Once a control range is selected this command can be used to check the lowest set point available for that range e g areplyof SOURe RANGe LOW 1barg indicates that the current range can accept a minimum set point of 1 bar the pressure units are always in bar K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 39 SOUR SLEW Command Syntax SOURCE PRESsure SLEW number Parameter number rate in pressure units second Short form SOUR SLEW number Function Selects the pressure rate used when value rate is selected Default 100 Query Syntax SOURCE PRESsure SLEW Short form SOUR SLEW Function Query rate value Response Rate value in selected units second Description When the controller rate is selected as value this command is used to set the controllers rate in selected units second K257 Issue No 2 4 40 Command Reference SOUR SLEW MODE Command Syntax SOURC
12. at 20 C FTH204 feet of water at 4 C HPA hecto Pascals INH20 inches of water at 20 C INH204 inches of water at 4 C INH2060 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 MH20 metres of water MHG metres of mercury MMH20 millimetres of water MMHG millimetres of mercury MPA mega Pascals PA Pascals PSI pounds per square inch TORR torr MBAR millibar K257 Issue No 2 vii Code Definitions The following codes are used in this manual CAL CAT CLS COND CONF EAV ENAB EOI ERR ESB EVEN GTL INL INP INST ISOL LEV LLO LOG MAV MEAS MSS OPR OUTP OSB PASS PRES PRES QUE QUES RES SENS SOUR SRE SRQ STB STAT SYST UNIT Calibration Catalogue Clear Condition Configuration Error in error queue Enable End of input Error Summary bit from standard event Event Go to local In limit Input Instrument Isolation Level Local lock out Logical Message available in output queue Measure Summary bit after SRQ Operation Output Summary bit from standard operations status register Passive Preset Pressure Queue Questionable Reset Sense Source Service request enable Service request Status register query State System Unit of pressure K257 Issue No 2 Glossary Terminology The terminology used in this manual is specific and individual int
13. eene nnne nn nnn nununnnnn 5 1 Command structure SENSe SENS ALT SENS ALT SLEW SENS MACH SENS MACH SLEW SENS SPE SENS SPE SLEW SOURce SOUR ALT SOUR ALT SLEW SOUR MACH IMM AMPL eesesssseseseeeeeeeneneeneneennennennennretnennretnenr nns SOUR MACH REF PSOURIMAGH REF MODE eset eee t E en eget SOUR MACH REF VAL eicere itte rib te i eua nepadeda riais SOUR SPE SOUR SPE SLEW UNIT UNIT ALT UNIT SPE 6 Sensor Calibration Module Command Reference 6 1 Command structure SENSe SENS SCM SENS SCM MODE CALibration CAL SCM 7 ERRORS K257 Issue No 2 page 4 60 4 61 4 62 4 63 4 64 5 1 5 1 5 3 5 4 5 6 5 7 5 9 5 9 5 10 5 11 5 12 5 13 5 14 5 15 5 16 5 17 5 17 5 18 6 1 6 1 6 3 6 4 6 5 7 1 List of Illustrations Figure page Figure 1 1 System Model saririsa eneon en ae nae yE AEI R SREE Ei 1 1 Figure 2 1 General Command Syntax ssssee eee 2 1 Figure 2 2 Command Syntax ssssssssssseseeeeeneeee enne 2 2 Fig re 2 3 Response Syntax ient eme ice eiecti es pee Laer e ro se PEE in iE 2 3 Figure 3 1 Status System ias tet ERR er ka etel rer Pe in ue RE Roe E0 3 2 Figure 4 1 Command and Query Summary sssssseeeeeeene 4 2 Figure 5 1 Aeronautical Command and Query Summary seeessss 5 2 Figure 6 1 SCM Command and Query Summary sss 6 2 List o
14. event register Response 16 bit value of pressure event register Description Reads contents of pressure event register see status reporting section K257 Issue No 2 4 48 2 2 2320 Command Reference SYSTem The SYSTem subsystem consists of general purpose commands SYST ERR Command Syntax n a Parameter Short form Function Query Syntax SYStem ERRor Query ERRor Short form SYST ERR Function Gets next error from the error queue K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 49 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 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
15. interrupt service routines not STB Bit 2 EAV sets when there is an error in the error queue The SYST ERR command has to be sent to retrieve the error The error queue buffers a maximum of five errors When no more errors are available the message No Error is returned Bit 4 MAV sets when there is a message available in the output queue K257 Issue No 2 3 8 Status System Bit 5 ESB sets when a standard event has occurred in the Standard Event Register Bit 6 MSS sets when an SRQ is generated SRQ sets when both the Status byte and the Service Request Enable register are at logic 1 AND function RS232 Specific A service request SRQ produces the message SRQ value where value the contents of the status summary byte The status system data structure sets each bit as follows ak ame Description o Reemerwenymumso Reemewemymumso Reewdswemymumso Summary bit from standard event Summary bit after service request SRQ 7 Summary bit from standard operations status Table 3 3 Status Byte Register Eg p Example commands using the Status Byte and Status Byte Enable registers SRE 16 Generate an SRQ interrupt when messages are available SRE Find out what events are enabled to generate SRQ interrupts STB Read and clear the Status Byte Event register IEEE 488 Specific Bit 7 OSB sets when the pressure operations register
16. maximum N A Query Syntax CALibration ZERO AUTO VALue Short form CAL ZERO AUTO VAL Function Ask applied value Response Number corresponding to applied pressure in the currently selected units Description For absolute sensors a pressure of 0 is very difficult to achieve to perform the zero Therefore to zero the absolute sensor a near vacuum is applied and measured This command sets the measured pressure so that a single point compensation can be applied to the reading K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 7 CAL ZERO TIME Command Syntax CALibration ZERO TIME integer Parameter integer timed zero time in hours Short form CAL ZERO TIME Function Timed zero time Defaults 24 minimum 1 maximum 999 Query Syntax CALibration ZERO TIME Short form CAL ZERO TIME Function Timed zero time out in hours Response Integer value for the timed zero time out in hours Description The timed zero function allows the instrument to perform periodic zeroes on gauge ranges The zero is performed when the timed zero time out period has expired and a set point of 0 is entered K257 Issue No 2 4 8 Command Reference CAL ZERO TIME STAT Command Syntax CALibration ZERO TIME STATe Boolean Parameter Boolean 0 disable timed zero 1 enable timed zero Short form CAL ZERO TIME STATe Boolean Function Timed zero state Default OFF Query Syntax CALibration ZERO TI
17. register see status reporting section K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 55 Command Syntax ESE lt integer gt Parameter Short form Function Default Query Syntax ESE Short form Function Response Description ESE integer 8 bit value of enable mask ESE integer Sets the Standard Event Status enable register minimum 0 maximum 255 0 ESE Query Standard Event Status Enable register 8 bit integer of contents of Standard Event Status Enable register See status reporting section K257 Issue No 2 4 56 Command Reference ESR Command Syntax n a Parameter Short form Function Query Syntax ESR Short form ESR Function Queries the Standard Event Status Register Response 8 bit integer of contents of Standard Event Status register Description See status reporting section K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 57 GTL Command Syntax GTL Parameter none Short form GTL Function Go to local Query Syntax n a Parameter Short form Function Description Takes the instrument out of local lockout mode the key pad on the instrument becomes active K257 Issue No 2 4 58 Command Reference IDN Command Syntax n a Parameter Short form Function Query Syntax IDN Short form IDN Function Queries the identification of the instrument Response A comma separated list conta
18. the value used for the Mach number reference pressure K257 Issue No 2 Druck DPI 515 SCPI User Manual 5 15 SOUR SPE Command Syntax SOURCe SPEed IMMediate AMPLitude number Parameter number Airspeed in current units Short form SOUR SPE number Function Sets the airspeed set point Default 0 0 Query Syntax SOURce SPE Short form SOUR SPE Function Queries the airspeed set point value Response Airspeed set point in current units Description This command sets the airspeed set point in the currently selected units K257 Issue No 2 5 16 Aeronautical Command Reference SOUR SPE SLEW Command Syntax SOURCe SPEed SLEW number Parameter number Airspeed rate set point in current units per second Short form SOUR SPE SLEW lt number gt Function Sets the airspeed rate set point Default 0 01 Query Syntax SOURce SPE SLEW Short form SOUR SPE SLEW Function Queries the airspeed rate set point Response Airspeed rate set point in current units per second Description This command sets the airspeed rate set point in the currently selected units per second K257 Issue No 2 Druck DPI 515 SCPI User Manual 5 17 The UNIT subsystem configures the instrument s aeronautical measurement units UNIT ALT Command Syntax UNIT ALTitude lt FT M gt Parameter enumerated FT feet M metres Short form UNIT ALT lt enumerated gt Default FT F
19. AIR NITRogen and height in cm Description A correction must be made if the unit under test is at a different height from the instrument This command programs the gas used and the height difference K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 21 SENS CORR HEAD STAT Command Syntax SENSe PRESsure CORRection HEAD STATe Boolean Parameter Boolean 0 Disables head correction 1 Enables head correction Short form SENS CORR HEAD STAT Boolean Function Enables disables head correction Default 0 Query Syntax SENSe PRESsure CORRection HEAD STATe Short form SENS CORR HEAD STAT Function Query head correction state Response 0 head correction off 1 head correction on Description This command enables or disables the head correction compensation K257 Issue No 2 4 22 Command Reference SENS CORR HEAD OFF Command Syntax SENSe PRESsure CORRection HEAD OFFset Parameter lt number gt tare offset value Short form SENS OFF Function Subtracts the offset value from the processed reading Default 0 Minimum numeric 1e10 cm Maximum numeric 1e10 cm Query Syntax SENSe PRESsure CORRection HEAD OFFset Short form SENS OFF Function Asks for the tare value Response Number corresponding to the tare offset value Description This command must be enabled by SENS OFF STAT and sets up the offset value K257 Issue No 2 Druck DPI 515 SCPI User Man
20. AT EAE A AE ee EE SOURIPRES INES a e A a SOUR PRES INL TIME cccccccssscscccecececcceceecececcsesecsesesesecsesausaeauaeanaeneueceeeeess SOUR PRES LEV IMM AMBPL 3 eite ette ipie naaie SOURIVENT 2 SOUR VENT TIME zidirii apatan iaa aiaa a anaiai SOUR RANG TTE SOURRANGHAU anos c SOUR RANGtLOW M SOUR SLEW 7 euni iti pmi sitet eL DIEI LIE SOYUR SLEW MODE irte toot tto t orco epe eere bere pe Dee be e eee e PDC De aiant SOUR SLEW OVE R reren oen ea ees estet Pert er EE Ee PELO EU Coon epe eden STATUS 7 wusste Ee E AIL SSTA TOPER COND a ERRMRMMRDEERT SSTA TOPER ENAB e STAT OPER EVEN a a N STAT OPER PRES COND ise aicccescsagestazecocascnescendedendecdedendssadarsiasgesessaconctecsenecie STAT OPER PRES ENAB oireistani a eeina Eti iaio dadinira STAT OPER PRES EVEN eee II eene e nnne nennen en ennn nen n nnn nnn SYSTOem duushtennnaibesii eec dex a creas tese eed Ssh6clzinis M 9 cm OYSTERS MR ince OE a UNIT 7o PP eL a NN Rn eee WUNEPRES E A a UNIISDER 2 aE E a ar idu d ut ESI UI Standard COMMAMNAS irrito i soci ei radiadi aaide OBS eue MISI DE iere ESE NL eR vizi cR jc PR AIDING Aidtsneentetieteieecete tese a cues ada uro M c oo ee K257 Issue No 2 Section LOC REM RST SRE STB Table of Contents contd 5 Aeronautical Command Reference eeeeeeee eene
21. E PRESsure SLEW MODE lt enumerated gt Parameter enumerated MAXimum maximum rate VALue user selected rate Short form SOUR SLEW MODE lt enumerated gt Function Select the rate the controller should use to achieve set point Default MAXimum Query Syntax SOURCE PRESsure SLEW MODE Short form SOUR SLEW MODE Function Query rate mode Response MAX for maximum rate VAL for user defined rate Description The controller can operate in two rate modes maximum and value In maximum rate the controller tries to achieve set point as quickly as possible In value mode the controller achieves the set point at a user selected rate K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 41 SOUR SLEW OVER Command Syntax SOURCE PRESsure SLEW OVERshoot STATe Boolean Parameter Boolean 0 overshoot not allowed 1 overshoot allowed Short form SOUR SLEW OVER Boolean Function Selects pressure overshoot to allowed or not allowed Default 1 overshoot allowed Query Syntax SOURCE PRESsure SLEW OVERshoot STATe Short form SOUR SLEW OVER Function Query overshoot state Response 0 overshoot not allowed 1 overshoot allowed Description The controller can reach the set point in one of two modes Overshoot not allowed the controller changes the pressure to near the set point The rate of pressure change slows when approaching the set point to avoid overshoot Ov
22. GE Druck Precision Pressure Controller Calibrator DPI 515 SCPI User Manual K257 Druck Limited 2003 This document is the property of Druck Limited and may not be copied or otherwise reproduced communicated in any way to third parties nor stored in any Data Processing System without the express written authority of Druck Limited Druck Limited Fir Tree Lane Groby Leicester LE6 OFH England Tel 0116 231 7100 Fax 0116 231 7103 K257 Issue No 2 K257 Issue No 2 Introduction This technical manual provides programming and communication instructions for the Druck DPI 515 Controller Calibrator 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 1 Safety o 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
23. ME STATe Short form CAL ZERO TIME STAT Function Query state on or off of timed zero Response 1 on O off Description This command is used to enable or disable the timed zero function K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 9 INPut The INPut subsystem obtains information about the input signal of the instrument This subsystem contains query only command to get the state of the logical input used for switch testing INP LOG Command Syntax n a Parameter Short form Function Default Query Syntax INPut LOGic STATe Short form INP LOG Function Reads the logic input state Response 1 logic 1 O logic 0 Description This query only command is used to read the state of the logical input K257 Issue No 2 4 10 Command Reference INSTrument The INSTrument subsystem gets information about the configuration of the instrument and contains query only commands INST CAT Command Syntax n a Parameter Short form Function 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 5barga If a barometer is fitted the string BAROMETER is added to the list K257 Issue No 2
24. MODE queries rate mode reply MAX Boolean Program Data Boolean data can only be one of two conditions the numbers 1 and 0 Example OUTPUut STATe 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 SOURCe PRESsure RANGe 2barg or SOURCe PRESsure RANGe 2barg selects the 2 bar g range A query of a string parameter always returns the string in double quotes K257 Issue No 2 2 6 Command Syntax Intentionally left blank K257 Issue No 2 Druck DPI 515 SCPI User Manual 3 1 3 STATUS SYSTEM The status reporting system informs the external controller that an event has occurred This information is in the form of a service request SRQ using IEEE 488 or an SRQ message using RS232 The DPI 515 instrument uses status reporting as defined in IEEE 488 2 with the implementation of status registers The OPERation and QUEStionable status registers have been implemented To comply with the SCPI protocol These are registers where the individual bits are summary bits of the status of the instrument Since the SCPI protocol does not include pressure instruments bit 10 of both these registers are used as a pressure summary bit This pressure summary bit is expanded to two 16 bit registers Bit 15
25. Manual 2 1 2 2 1 2 2 COMMAND STRUCTURE This section describes the structure of the commands and data sent and received by the DPI 515 Controller Calibrator 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 iN D LM 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 Message Terminators All SCPI commands are terminated by line feed i e either lt newline gt 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 SOURCE PRESSURE specifies PRESSURE the is one level below SOURCE When the colon is the first character of the command it specifies that the next command is a root level command e g SOURCE specifies that SOURCE is a root level command K257 Issue No 2 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 Commas If a command requires more than one parameter separate adja
26. PA PA PSI TORR MBAR USER1 USER2 NONE Description This command is used to query the available units of pressure measurement in the instrument The units list depends on the area of use configuration If a index number is specified which does not contain a unit then NONE is returned K257 Issue No 2 4 14 Command Reference INST VERS Command Syntax n a Parameter Short form Function Query Syntax INSTrument VERSion Short form INST VERS Function Queries the software versions of the controller Response Returns three strings representing the version numbers of the main controller code CAN controller and BOOT code Description The main controller code is the part that can be upgraded through the code update utility The CAN and BOOT code is stored in EEPROM and can only be replaced by replacing the EEPROM K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 15 OUTPut The OUTPut subsystem turns the pressure controller on off controls the state of the isolation valves and the state of the logical outputs OUTP ISOL STAT Command Syntax OUTPut ISOLation STATe Boolean Parameter Boolean 0 close 1 open Short form OUTP ISOL Function Isolation valve state Default OFF isolation valve closed Query Syntax OUTPut ISOLation STATe Query STATe Short form OUTP ISOL Function Queries state of isolation valve Response 1 open 0 closed Descriptio
27. Ssure FILL TIME integer Parameter integer fill time in seconds Short form SENS FILL TIME Function Sets the fill time time out period Default 20 seconds minimum 20 seconds maximum 999 seconds Query Syntax SENSe PRESsure FILL TIME Short form SENS FILL TIME Function Asks for fill time time out period Response Integer corresponding fill time time out period in seconds Description If fill time time out settings are enabled then the controller automatically switches to measure mode if the controller cannot achieve the set point within the specified time out setting K257 Issue No 2 4 28 Command Reference SENS FILL TIME STAT Command Syntax SENSe PRESsure FILL TIME STATe Boolean Parameter Boolean 0 fill time out disabled 1 fill time out enabled Short form SENS FILL TIME STAT Function Enables disables the time outs Default OFF Query Syntax STATe Short form SENS FILL TIME STAT Function Asks if fill time time outs are enabled or disabled Response 0 fill time time out disabled 1 fill time time out enabled Description If fill time time out settings are enabled then the controller automatically switches to measure mode if the controller cannot achieve the set point within the specified time out setting K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 29 SENS RANG Command Syntax SENSe PRESsure RANGe string Parameter stri
28. V selects the voltmeter OFF turn the SCM option off K257 Issue No 2 Druck DPI 515 SCPI User Manual 6 5 CALibration The CALibration subsystem calibrates the signal conditioning module CAL SCM Command Syntax CALibration SCM ZERO integer Parameter Short form CAL SCM ZERO Function Zeroes the current SCM reading Parameter integer 0 stop zero 1 start zero Query Syntax CALibration SCM ZERO Short form CAL SCM ZERO Function Queries the state of SCM zero Response Integer value representing zero status 0 Zero complete and OK 1 Zero offset too large 2 Still performing zero Sampling reading Default 0 Minimum 0 Maximum 2 Description The zero function allows any zero drift to be removed from the SCM reading K257 Issue No 2 6 6 Sensor Calibration Module Command Reference K257 Issue No 2 Druck DPI 515 SCPI User Manual 7 1 7 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 Error Error message Error message code code aor fot mata PS Table 7 1 Errors
29. VA Mvc v lt integer gt Figure 6 1 SCM Command and Query Summary K257 Issue No 2 Druck DPI 515 SCPI User Manual 6 3 The SENSe subsystem selects and configures the measurement functions of the SCM SENS SCM Command Syntax n a Parameter Short form Function Query Syntax SENSe SCM Short form SENS SCM Function Queries the SCM reading Response Returns the currently selected SCM channel reading Description This query only command returns the SCM reading for the channel selected by the MODE command K257 Issue No 2 6 4 Sensor Calibration Module Command Reference SENS SCM MODE Command Syntax SENSe SCM MODE OFF MA I MVA MVC V Parameter SCM channel selection OFF SCM turned off MA current in mA MVA absolute voltage in mV MVC compensated voltage in mV V voltage in V Short form SENS SCM MODE Function Selects SCM channel Default OFF Minimum N A Maximum N A Query Syntax SENSe SCM MODE Short form SENS SCM MODE Function Queries the selected SCM channel Response Returns an enumerated value in the same format as the parameter Description The SCM option consists of a voltmeter and ammeter This command selected the required SCM function MA selects the ammeter MVA selects the millivoltmeter read as an absolute voltage MVC selects the millivoltmeter but compensates for the 10 V excitation voltage for ratiometric measurements
30. and events In addition to setting the status bits a text message will be placed in the error queue The ESB bit in the status byte sets if the associated bit in the event enable register is set The enable register may be set through the ESE command so that selected standard events cause the ESB bit to be set The system events that set each bit are as follows ik Name pescripion meaning o orc nouses esee curenty reme s uma nouses reserved curenty retums Table 3 1 Standard Event Register K257 Issue No 2 Druck DPI 515 SCPI User Manual 3 5 3 8 Operation status group The operation status group are 16 bit registers that are read by the STAT OPER commands The event register is cleared by reading it the event and enable registers are cleared by the CLS command CON EVEN ENAB oc o E 2 o 9 Condition Event Enable When a standard operation condition occurs an appropriate bit is set in the condition register this clears when the condition no longer exists The bit is then latched in the event register If the associated bit in the enable register is set the OPR bit in the status byte sets The enable register may be set through the STAT OPER ENAB command so that only selected standard operation events cause the OPR bit to set Problems can occur with some IEEE 488 controllers reading 16 bit unsigned numbers All registers in this group do not use bit 15 The enable bit cannot be
31. bit 10 changes state The operations register is a 16 bit register only using bit 10 This bit is a summary of the pressure operations register K257 Issue No 2 Druck DPI 515 SCPI User Manual 3 9 Status reporting register structure To set up the status reporting system 1 All status registers should be cleared by the command CLS The Pressure Operations Event register has to be set to enable the Pressure Operations Condition Register to send all the events to be reported use the command STAT OPER PRES ENAB 511 The enabled events may also be read by the query STAT OPER PRES ENAB The Operation Status Event register must then be enabled to read bit 10 by the command STAT OPER ENAB 1024 The enabled events may also be read by the query STAT OPER ENAB The status request to enable the SRQ must then be set To enable only the Operation Status register OSB send the command SRE 128 To enable the Operation Status register OSB and the Error Queue EAV send the command SRE 132 This register may also be read by the query SRE An event occurring generates an SRQ the Status Byte should be queried to find the source of the event K257 Issue No 2 3 5 3 10 Status System If bit 2 of the Status Byte Register is set the error queue can be read by the query SYST ERR Keep issuing this query until there are no more errors in the error queue At this point bit 2 of the Status B
32. cent parameters by using a comma A commas does not affect the tree pointer e g SYSTEM TIME 10 25 30 To execute a command the full path to the command must be specified e g OUTPut STATe ON This turns the pressure controller on Note There must be a space between the command words and the parameter In the above example there is a space between STATe and ON SCPI commands are not case sensitive and may have a short form In this manual upper case letter identify the short form e g OUTP is the short form of OUTPUT 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 SOURce PRESsure L EVelj IMMediate AMPlitude 5 0 can be sent as SOURce PRESsure LEVel 5 0 or SOURCce 5 0 This sets the set point to 5 0 K257 Issue No 2 Druck DPI 515 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 lt PROGRAM MNEMONIC gt
33. ecimal 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 SOUR 100 m would set the programmable output 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 1e412 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 suffix 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 K257 Issue No 2 Druck DPI 515 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 SOURce PRESsure SLEW MODE MAXimum selects the maximum rate mode A query of an enumerated parameter always returns the short form data in upper case Example SOURce PRESsure SLEW
34. ectly 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 K257 Issue No 2 IX Reconnect Refit Remove Repair To rejoin or refasten that which has been separated Fit an item which has previously been removed 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 To restore damaged worn out or malfunctioning equipment to a serviceable usable or operable condition Remove an item and fit a new or a serviced item To put back into a desired position adjustment or condition To perform such operations as cleaning lubricating and replenishing to prepare for use Ascertain by using the appropriate test equipment that a component or system functions correctly K257 Issue No 2 Pressure unit conversions 100000 Ibt ft 47 8803 Ibf in psi 6894 76 inHg 3386 39 mH O 9806 65 inH O 1 249 089 mbar 100 ftHO 1 2989 07 kgf cm 98066 5 atm 101325 0 kgf m 9 80665 pdl ft2 1 48816 mmHg 133 322 dyn cm 0 1 cmHg 1333 22 hbar 10000000 mHg 133322 0 tonf ft UK 107252 0 mm H O 1 9 80665 tonf in UK 15444300 cm H O 1 98 0665 inH O USA 2
35. eration Status a 2 8 9 STAT OPER ENAB 1024 SERIAL POLL logical OR C EV EN 5 eer ressure erations STAT SRE 128 OPER STAT OPER PRES ENAB 511 Key C Condition variable values EN EV fe STAT OPER EV Latched values PRES ENAB EN Bit mask Figure 3 1 Status System K257 Issue No 2 Druck DPI 515 SCPI User Manual 3 3 3 1 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 Output Queue Status Byte Every time a query has been successfully completed the response in a text readable format is placed at the end of the output queue If the MAV bit in the Status Byte was previously cleared it will be set 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 K257 Issue No 2 3 4 Status System 3 2 Standard event group The standard event group are 8 bit registers that are read by the IEEE 488 standard commands The event register is cleared by reading it the event and enable registers are cleared by the CLS command ESR ESE Status Byte a O 2 D 2 Event Enable Bits within the standard event condition register are set by system errors
36. erpretation 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 corr
37. ershoot allowed the controller achieves set point as fast as possible and when approaching the set point may overshoot or undershoot K257 Issue No 2 4 42 Command Reference STATus The STATus subsystem supports the OPERation status register as defined in SCPI protocol STAT OPER COND Command Syntax n a Parameter Short form Function Query Syntax STATus OPERation CONDition Short form STAT OPER COND Function Query condition register Response Contents of condition register Description Returns the contents of the 16 bit condition register see section on status reporting K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 43 STAT OPER ENAB Command Syntax STATus OPERation ENABle integer Parameter integer 16 bit value to set enable bits Short form STAT OPER ENAB integer Function Controls the status operation enable register Default 0 minimum 0 maximum 32767 Query Syntax STATus OPERation ENABle Short form STAT OPER ENAB Function Query enable register Response 16 bit value of enable register Description Controls the bits that pass through the status reporting system see status reporting section K257 Issue No 2 4 44 Command Reference STAT OPER EVEN Command Syntax n a Parameter Short form Function Query Syntax STATus OPERation EVENt Short form STAT OPER Function Query event register Response 16 bit value o
38. ery Summary Command Parameters Comments status register information lt integer gt lt integer gt error queue SCPI version lt name gt lt string gt lt number gt ASCII unit name conversion factor standard SCPI commands integer integer Figure 4 1 Command and Query Summary K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 5 CALibration The CALibration subsystem enables the calibration of the transducers and the rate control system refer to the user manual for further details CAL ZERO AUTO Command Syntax CALibration ZERO AUTO lt Boolean gt Parameter Boolean 0 aborts the zero 1 performs a zero Short form CAL ZERO AUTO Function Pressure zeroing Default 0 Query Syntax CALibration ZERO AUTO Short form CAL ZERO AUTO Function Query progress of zero Response 0 Zero OK 1 Zero in progress 2 Zero timed out 3 Zero offset outside limits 4 Zero aborted Description This command is used to zero the currently selected sensor and starts a zero sequence The progress of the zero can be monitored by using the query for this command A parameter of zero aborts this command function zero sequence K257 Issue No 2 4 6 Command Reference CAL ZERO AUTO VAL Command Syntax CALibration ZERO AUTO VALue number Parameter number applied pressure Short form CAL ZERO AUTO VAL Function Absolute sensor zeroing Defaults 0 0 minimum N A
39. eseineiae N eile Peel ed Sed Spe EE e AREE Do E 3 2 Standard event group sesssssssssssseeeeeeenee nnne nnne sera hi nnne 3 83 Operation status group 3 4 Status byte group 3 5 Instrument errors 36 Example programi ccm 4 COMMAND AND QUERY SUMMARY 4 1 Command structure CALibration CAL ZERO AUTO CAL ZERO AUTO VAL CALZERO TIME sissies a a tre a r a E R E a EE EE CAL ZERO TIME STAT INPut INP LOG INSTrument INST CAT NST LIM INST SN INST UNIT INST VERS OUTPut OUTP ISOL STAT OUTP LOG LEV OUTP STAT K257 Issue No 2 4 2 Table of Contents contd Section SENSG SENHNEHRHMBLEWIIMINMIBNINGU es DIM es eae SENS PRESi uus per n eie le item aS SSENS BAR 0 Sans een oec eee eee ee ee EE SENS GORRIAEAD 2 tette estet tue eei pesas rese teen cese eee cuero tee nene TeU SENS CORR HEADS TAT 2rd ta tette re cep eem ect eno g eere usse e eter anaidai SENS CORR HEAD OFF karainan etras tee obest eae t cese sees QUUD Papel CE N SENS CORR HEAD OFF STAT u cccccccccccccccececccecececseseecsesesscasaeeeeeseeeeeeeeeeess ze edu MESIIdMMETT SENS AILT FREQ RR RR M SENS FILIES cU SENS FILLE TIME occcstedchextarteccessctcet aaa a EErEE SENS FILLE TIME STAT crisissen noieira aeaiiai nea eari i tue SENS RANG apearen aaa aaa a aani de ees aa Ee ra Er Sa SOURCE a E M SOUR PRES EFF 15 1 O a A
40. f Tables Table page 3 1 Standard Event Register seessssssesessseeeeeeenennnee nennen 3 12 3 2 Operation Status Register ssssssssessseeneeeeeeenenn nennen 3 14 3 9 Stat s Byte Hegister incen nes eere oiai ioira 3 16 7 1 Errors VOO1O 199 isa tesi et aa e rene nd esz e Ee Do Redes poer aae ee 7 1 4 2 EMOS 200 07299 L1 siendo iecit deii aaee Ea EXE CBEMSRR Sanas 7 2 Vc EM LI COU 7 2 7 3 Errors 4201 10212 iiie eniro RN eee 7 3 K257 Issue No 2 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 information 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 calibration module SCPI Standard commands for programmable instruments ve Positive ve Negative C Degrees Celsius eF Degrees Fahrenheit Pressure measurement units The following units are used in this manual ATM atmosphere BAR bar CMH20 centimetres of water at 20 C CMHG centimetres of mercury FTH20 feet of water
41. f event register Description Reads contents of event register see status reporting section K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 45 STAT OPER PRES COND Command Syntax n a Parameter Short form Function Query Syntax STATus PRESsure OPERation CONDition Short form STAT OPER PRES COND Function Reads the contents of the pressure condition register Response Contents of pressure condition register Description Returns the contents of the 16 bit pressure condition register see section on status reporting K257 Issue No 2 4 46 Command Reference STAT OPER PRES ENAB Command Syntax STATus OPERation PRESsure ENABle integer Parameter integer 16 bit value to set pressure enable bits Short form STAT OPER PRES ENAB integer Function Controls the pressure status operation enable register Default 0 minimum 0 maximum 32767 Query Syntax STATus OPERation PRESsure ENABle Short form STAT OPER PRES ENAB Function Query enable register Response 16 bit value of pressure enable register Description Controls the bits that pass through the status reporting system see status reporting section K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 47 STAT OPER PRES EVEN Command Syntax n a Parameter Short form Function Query Syntax STATus OPERation PRESsure EVENt Short form STAT OPER PRES Function Reads contents of pressure
42. gnal is generated Switch contacts changed state Every time the switch contacts used for performing a switch test change state this bit is set K257 Issue No 2 Druck DPI 515 SCPI User Manual 3 7 3 4 Status Byte group The status byte group are 8 bit registers that are read by the IEEE 488 standard commands The event register is cleared by reading it the event and enable registers are cleared by the CLS command STB SRE E RHS pee MAV MAV ESB _ ESB He vss v Question data gt Output queue gt Standard event gt logical OR Standard operation Event Enable Bits within the status byte are a summary of other data structures in the status system These bits will become set if other parts of the status system indicates that they should do so i e a message in the output queue or error queue or a condition and enable set in a register pair If the associated bit in the status enable register is set a serial poll is generated and bit 6 is set The enable register may be set through the SRE command so that only selected status bits cause a serial poll Note Bit 6 of the enable register is always set to 0 There are some small differences between STB and serial polling Either method can be used to read the state of bits 0 5 and bit 7 The reading method is different for bit 6 when using STB and serial poll In general use serial polling inside
43. his query only command reads the sensor which has been selected by the RANGE command Response A pressure reading in the current units Description Queries the pressure reading for the selected sensor in the selected units The sensor can be changed see SENSe PRESsure RANGe and SOURe PRESsure RANGe commands Issuing the SOURce command can also change the range K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 19 SENS BAR Command Syntax n a Parameter Short form Function Query Syntax SENSe PRESsure BARometer Short form SENS BAR Function Queries the barometric pressure value Response number in the selected units of pressure measurement Description Returns the barometric pressure measured by the optional barometric transducer If the optional barometric transducer is not fitted the response is zero pressure K257 Issue No 2 4 20 Command Reference SENS CORR HEAD Command Syntax SENSe PRESsure CORRection HEAD lt enumerated gt lt numeric gt Parameters enumerated AIR Air used as gas NITRogen Nitrogen used as gas numeric Height of gas in cm Short form SENS CORR HEAD enumerated numeric Function Head correction parameters Default Enumerated AIR numeric 0 Minimum numeric 1e10 cm Maximum numeric 1e10 cm Query Syntax SENSe PRESsure CORRection HEAD Short form SENS CORR HEAD Function Query gas and height of head correction Response
44. ical parameters UNIT sets the aeronautical units for the instrument K257 Issue No 2 5 2 Aeronautical Command Reference Command Parameters lt integer gt lt integer gt lt integer gt lt integer gt lt integer gt lt integer gt lt integer gt lt integer gt lt integer gt lt integer gt lt integer gt lt integer gt Comments altitude reading altitude per second reading Mach number Mach number per second airspeed reading airspeed reading per second altitude set point rate of climb vertical speed Mach set point Rate of Mach airspeed set point rate of airspeed altitude units airspeed units Figure 5 1 Aeronautical Command and Query Summary K257 Issue No 2 Druck DPI 515 SCPI User Manual 5 3 SENSe The SENSe subsystem selects and configures the aeronautical measurement functions SENS ALT Command Syntax n a Parameter Short form Function Query Syntax SENSe ALTitude Short form SENS ALT Function Queries the aeronautical sensor Response Returns the altitude reading when the altitude range is selected Description This query only command returns the aeronautical altitude value The altitude range must be selected for a response from this command K257 Issue No 2 5 4 Aeronautical Command Reference SENS ALT SLEW Command Syntax n a Parameter Short form Function Query Syntax SENSe ALTitude SLEW
45. ining manufacture model serial number and software version Description Return identification e g IDN Druck DPI515C 1234 01 00 00 K257 Issue No 2 Druck DPI 515 SCPI User Manual Command Syntax LLO Parameter none Short form LLO Function Local lockout Query Syntax n a Parameter Short form Function Description LLO Disables the instrument key pad the instrument cannot be put into local mode K257 Issue No 2 LOC Command Syntax LOC Parameter none Short form LOC Function Local mode Query Syntax n a Parameter Short form Function Description Command Reference Puts the instrument into local mode The instrument will no longer be in remote mode and can be operated from the front panel K257 Issue No 2 Druck DPI 515 SCPI User Manual REM Command Syntax REM Parameter none Short form REM Function Remote mode Query Syntax n a Parameter Short form Function Description Puts the instrument into remote mode The instrument will be in remote mode and cannot be operated from the front panel K257 Issue No 2 4 62 Command Reference RST Command Syntax RST Parameter none Short form RST Function This command resets the operating parameters units to default values Query Syntax n a Parameter Short form Function Description Clears SCPI registers K257 Issue No 2 Druck DPI 515 SCPI U
46. interface Gets instrument identity Gets pressure ranges fitted Sets units as mbar and queries units Enters rate of change as maximum rate and queries rate mode Enters 1000 mbar set point and queries set point Sets controller on and queries controller state Queries pressure reading time date keys a and b changes the query parameter Print pressure reading or time date Print time and date Wait 1 second Goes round loop until q key is pressed Sets controller off Queries controller state See www DPI515 com downloads for more examples K257 Issue No 2 3 12 Status System Example program OPEN IEEECTRL FOR RANDOM AS 1 OPEN IEEEDATA FOR RANDOM AS 2 IOCTL 1 4 PRINT IOCTL 1 check device address IOCTL 2 IDN CHR 10 gend query instrument type PRINT IOCTLS 2 read reply of instrument type IOCTL 2 INST CAT CHR 10 send query ranges fitted PRINT IOCTLS 2 read reply of ranges fitted IOCTL 2 UNIT MBAR CHRS 10 select mbar units IOCTL 2 UNIT CHRS 10 gend units query PRINT IOCTLS 2 read reply of units query IOCTL 2 SOUR SLEW MODE MAX CHRS 10 select max rate IOCTL 2 SOUR SLEW MODE CHRS 10 gend rate mode query PRINT IOCTLS 2 read reply of rate mode query IOCTL 2 SOUR 1000 0 CHR 10 setpoint of 1000 mbar IOCTL 2 SOUR CHRS 10 gend setpoint query PRINT IOCTLS 2 read reply of setpoint query IOCTL
47. is not used and is always zero The Questionable and Pressure Questionable registers are not used The only bit implemented in the Operation status register is bit 10 summary of the pressure operation status A summary bit is the final output of a data structure it is a single bit that shows the status of one or more related events in the instrument The basic structure of a summary bit Condition register Event register Enable register Logical ANDing of the Event and Enable registers Summary bit that summarises the result using OR logic Condition Register This register shows the current status of the device The condition register is constantly updated the bits in the register are set or reset showing the current condition Event Register The event register shows an event that occurs in the condition register a condition bit goes from low to high This condition change is stored and only reset when the event register is read or the CLS command sent Enable Register This register allows the results of the event register to pass through to the next cascaded register and enables the user to select the event that should generate the final SRQ event K257 Issue No 2 3 2 Status System The status system implemented in the instrument is shown in the following diagram Note Initial values of registers are 0 with the queues empty Error Queue SYST ERR SRE 132 Output Queue Status Byte Op
48. lected pressure units This value can be a constant value or the barometric pressure see MODE command K257 Issue No 2 Druck DPI 515 SCPI User Manual 5 13 SOUR MACH REF MODE Command Syntax SOURCe MACH REFerence MODE lt enumerated gt Parameter enumerated type VAL value specified by user BARO barometric pressure Short form SOUR MACH REF enumerated Function Sets the source of the Mach number reference pressure Default VAL Query Syntax SOURce MACH REFerence Short form SOUR MACH REF Function Queries the Mach number mode Response VAL or BARO Description This command sets source of the reference pressure used to calculated Mach number VAL is for a user defined value see VALue command If a barometer is fitted BARO selects the barometric pressure reading K257 Issue No 2 5 14 Aeronautical Command Reference SOUR MACH REF VAL Command Syntax SOURCe MACH REFerence MODE VALue number Parameter number Mach number reference pressure Short form SOUR MACH REF VAL number Function Sets the manually entered Mach number reference pressure Default 1013 25 mbar Query Syntax SOURce MACH REFerence VALue Short form SOUR MACH REF VAL Function Queries the Mach number reference value Response Manual Mach number reference pressure value Description If a constant value Mach number reference pressure is selected see MODE command then this command is used to change
49. ler ON K257 Issue No 2 4 34 Command Reference SOUR VENT Command Syntax SOURce PRESsure LEVel IMMediate AMPLitude VENT number Parameter integer 0 abort vent 1 start vent Short form SOUR VENT integer Function Vents the user system Default 0 Query Syntax SOURce PRESsure LEVel IMMediate AMPLitude VENT Short form SOUR VENT Function Query status of vent Response 0 vent OK 1 vent in progress 2 vent timed out 3 vent outside limits 4 vent aborted Description This command vents the user system the command should be queried to get the status of the vent K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 35 SOUR VENT TIME Command Syntax SOURce PRESsure LEVel IMMediate AMPLitude VENT TIME number Parameter integer vent time out in seconds Short form SOUR VENT TIME integer Function Sets the vent time out period Default 20 seconds minimum 20 seconds maximum 999 seconds Query Syntax SOURce PRESsure LEVel IMMediate AMPLitude VENT TIME Short form SOUR VENT TIME Function Query vent time out Response Vent time out in seconds Description This command sets the time out period for a system vent If during a vent this time out expires then venting aborts and the vent status sets to vent timed out see SOUR VENT K257 Issue No 2 4 36 Command Reference SOUR RANG Command Sy
50. mmand Syntax SENSe PRESsure FILTer LPASs FREQuency lt number gt Parameter number filter averaging value Short form SENS FILT FREQ Function Used to set up the averaging component of the filter Default 0 minimum 0 maximum 20 Query Syntax SENSe PRESsure FILTer LPASs FREQuency Short form SENS FILT FREQ Function Ask for filter average parameter Response Number corresponding to filter average value Description A digital low pass filter can be applied to the pressure reading This is a first order low pass filter the time constant depends on the value set by this command K257 Issue No 2 4 26 1 1 Command Reference SENS FILT STAT Command Syntax SENSe PRESsure FILTer LPASs STATE Boolean Parameter Boolean 0 Disables low pass filter 1 Enables low pass filter Short form SENS FILT Boolean Function Sets low pass filter ON or OFF Default OFF Query Syntax SENSe PRESsure FiLTer LPASs STATe Short form SENS FILT Function Query state on or off for the low pass filter Response 1 ON 0 OFF Description This command is used to enable or disable the low pass filter for producing a more stable reading An intelligent filter is implemented so that any noise in the system is filtered while step changes pass straight though the filter K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 27 SENS FILL TIME Command Syntax SENSe PRE
51. n Opens Closes the isolation valve of the current range K257 Issue No 2 4 16 Command Reference OUTP LOG LEV Command Syntax OUTPut LOGic x LEVel lt Boolean gt Parameter Boolean 0 level low 1 level high Short form OUTP LOG X LEV Function Controls the level of the digital outputs The index number x specifies the output line 1 for output 1 and 2 for output 2 Default 0 Query Syntax OUTPut LOGic x LEVel Short form OUTP LOG Xx LEV Function Asks for level of output line Response 0 level low 1 level high Description The instrument has two digital output lines the levels on these lines are controlled using this command K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 17 OUTP STAT Command Syntax OUTPut STATe lt Boolean gt Parameter Boolean 0 turn controller off 1 turns controller on Short form OUTP Function Turn the pressure controller on off Default 0 Query Syntax OUTPut STATe Short form OUTP Function Asks for state of pressure controller Response 0 controller off 1 controller on Description Sets or queries the state of the pressure controller K257 Issue No 2 4 18 Command Reference SENSe The SENSe subsystem selects and configures the measurement functions of the SENS PRES Command Syntax n a Parameter Short form Function Query Syntax SENSe PRESsure Short form SENS Function T
52. ng range information Short form SENS RANG Function Used to select a range to be sensed Query Syntax SENSe PRESsure RANGe Short form SENS RANG Function Asks for currently sensed range Response String representing selected pressure range Description This command selects the pressure range to be used for returning the pressure reading also see the SOURCe RANGe command Changing the source range also changes the sense range e g SENSe RANGe 2barg selects the 2 bar gauge range K257 Issue No 2 4 30 Command Reference SOURce The SOURce subsystem controls the pressure output of the instrument SOUR PRES EFF Command Syntax n a Parameter Short form Function Query Syntax SOURce PRESsure EFFort Short form SOUR EFF Function This query only command returns the effort the controller does to achieve the set point Response number representing controller effort Description This query only command returns the effort the controller does to achieve the set point K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 31 SOUR INL Command Syntax SOURce PRESsure INLimits number Parameter number in limits value as full scale Short form SOUR INL number Function The controller has an in limits set point indicator This can generate a service request when the pressure is within limits for a set time period Default 0 01 FS minimum 096
53. ntax SOURCe PRESsure RANGe string Parameter string range information Short form SOUR RANG Function Selects the control range Query Syntax SOURCe PRESsure RANGe Short form SOUR RANGE Function Asks for currently selected controller range Response String representing selected sense range Description This command selects the range to be used for controlling pressure e g SOURe RANGe 2barqa selects the 2 bar absolute range the pressure units are always in bar Note Absolute ranges are quasi absolute values combining barometric and gauge sensor readings K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 37 SOUR RANG AUTO Command Syntax SOURCe PRESsure RANGe AUTO boolean Parameter Boolean 0 auto ranging disabled 1 auto ranging enabled Short form SOUR RANG AUTO Function Selects auto ranging Default 0 Query Syntax SOURCe PRESsure RANGe AUTO Short form SOUR RANG AUTO Function Queries auto range selection Response 0 disabled 1 enabled Description The manual range changing command SOUR PRES RANGE stays operational but on receipt of a new set point the range may change because of auto ranging While auto range changes any commands sent to the controller stay in a queue until the completion of range changing When complete and if enabled an SRQ will be generated Note The SCPI auto ranging facility remains independent of the user interface
54. outputs STATus instruments state SYSTem errors and SCPI version UNIT sets the units for the instrument K257 Issue No 2 4 2 Command Parameters Boolean lt number gt lt integer gt lt Boolean gt Boolean Boolean Boolean Boolean number lt enumerated gt lt numeric gt Command and Query Summary Commenis zero offset on off offset value of absolute range enabled disabled timed zero reads logical input lists ranges and details of transducers fitted Turns pressure controller on off controls isolation valves and logical outputs configures measurement functions height difference adjustment Air or nitrogen continued Figure 4 1 Command and Query Summary K257 Issue No 2 Druck DPI 515 SCPI User Manual Command Parameters lt number gt lt number gt lt number gt Boolean integer Boolean string string number number number lt number gt lt string gt lt number gt lt enumerated gt Boolean Comments low pass filter filter step response filter averaging value on off time in seconds on off sensor range pressure output details time in seconds vents the user system controller range information rate in pressure units second continued Figure 4 1 Command and Query Summary K257 Issue No 2 4 4 Command and Qu
55. ponse Returns airspeed value when airspeed range selected Description This query only command returns the airspeed reading The airspeed range must be selected for a response from this command K257 Issue No 2 5 8 Aeronautical Command Reference SENS SPE SLEW Command Syntax n a Parameter Short form Function Query Syntax SENSe SPEed SLEW Short form SENS SPE SLEW Function Queries the rate of change of airspeed Response Returns the rate of change of airspeed in units per second Description This query only command returns the airspeed rate of change in units per second K257 Issue No 2 Druck DPI 515 SCPI User Manual 5 9 SOURce The SOURce subsystem controls the aeronautical pressure output of the instrument CAUTION CHANGING TO THE AERONAUTICAL OPTION FROM NORMAL PRESSURE CONTROL CAN CAUSE DAMAGE TO SENSITIVE AERONAUTICAL INSTRUMENTS AND SENSORS MAKE SURE THE SLEW SETTING IS BELOW THE MAXIMUM LIMIT FOR THE INSTRUMENT UNDER TEST SOUR ALT Command Syntax SOURCe ALTitude IMMediate AMPLitude number Parameter number Altitude in current units Short form SOUR ALT number Function Sets the altitude set point Default 0 0 Query Syntax SOURCe ALT Short form SOUR ALT Function This queries the altitude set point value Response Altitude set point in current units Description This command sets the altitude set point in the currently selected units
56. ponse name as above Description This command selects the current pressure units USER1 and USER2 are the user defined units K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 53 UNIT DEF Command Syntax UNIT PRESsure DEFine x lt string gt lt number gt Parameter string ASCII representation of unit name number Conversion factor from Pascals to required units Short form UNIT DEF string number Function There are two user defined units on the instrument This command defines the name and conversion factor to use minimum string ud number 0 0 maximum string 8 characters number 1 0e10 Default string N A number 1000 0 Query Syntax UNIT PRESsure DEFine Short form UNIT DEF Function Query conversion factor Response A string representing name and number corresponding to the conversion factor Description This command defines the name and conversion factor for the special units This conversion factor is from Pascals to the required units An index of 1 is for USER1 unit and an index of 2 is for USER2 unit K257 Issue No 2 4 54 Command Reference 4 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 Parameter Short form Function Description Clears all event and condition
57. ser Manual 4 63 Command Syntax SRE lt integer gt Parameter Short form Function Default Query Syntax SRE Short form Function Response Description SRE integer 8 bit value of enable mask SRE integer Sets the Service Request Enable register minimum 0 maximum 255 0 SRE Query Service Request Enable register 8 bit integer of contents of Service Request Enable register See status reporting section K257 Issue No 2 4 64 Command Reference STB Command Syntax n a Parameter Short form Function Query Syntax STB Short form STB Function Queries the Status Register Response 8 bit integer of contents of Status register Description See status reporting section K257 Issue No 2 Druck DPI 515 SCPI User Manual K257 Issue No 2 Druck DPI 515 SCPI User Manual 5 1 5 5 1 Aeronautical Command Reference The following lists of all the SCPI commands and queries for the aeronautical facility that apply to the instrument 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 sub systems as follows Command sub system SENSe directs the instrument to measure aeronautical parameters SOURCce directs the instrument to control the aeronaut
58. tem sub system Pressure in SENSe UNITs STATus sub system sub system sub system Pressure out OUTPut SOURce INSTrument idc sub system sub system 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 K257 Issue No 2 1 2 Introduction 1 2 Remote Local Operation Any command received over the SCPI interface automatically puts the DPI 515 Controller Calibrator into remote control mode and disables all front panel keys Sending the IEEE 488 command GTL Go To Local returns the DPI 515 Controller Calibrator to local control mode Sending the IEEE 488 command LLO Local Lock out locks the DPI 515 Controller Calibrator in remote control mode until power down The DPI 515 Controller Calibrator confirms remote control mode by displaying the message Under Remote Control The display shows the full scale value in the selected units of measurement and updates pressure readings The parameters and units used for the display only change when the DPI 515 Controller Calibrator receives a SOURce PRESsure or UNIT PRES command new pressure or units Any available parameters or units can be used over the SCPI interface K257 Issue No 2 Druck DPI 515 SCPI User
59. this publication Pressure Do not apply pressure greater the maximum safe working pressure to the Druck DPI 515 Controller Calibrator Maintenance The Druck DPI 515 Controller Calibrator 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 515 Controller Calibrator Associated Druck Documents K245 DPI 515 User 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 K257 Issue No 2 Table of Contents Preliminary pages Introduction Sately inue tke Ads ded e aere Apu Table of contents this table List of Illustrations List of Tables ADHrEVIAtIONS S SR RN cr c Pressure measurement units Code Definitions Pressure unit conversions Section 1 INTRODUCTION Remote Local Operation 2 COMMAND SYNTAX 5 atr ati erano noun ssesectasacceesstectscaserssatesasanszseecoers 2 1 Commands to the instrument seeen naaras 2 2 Command response from the instrument 2 8 Program headers 2 4 SCPI data types 3 STATUS SYSTEM 3 1 Output quelie ZIiinnln
60. ual 4 23 SENS CORR HEAD OFF STAT Command Syntax SENSe PRESsure CORRection HEAD OFFset STATe Parameter Boolean 0 disables tare offset 1 enables tare offset Short form SENS OFF STAT Function Enables and disables the tare offset function Query Syntax SENSe PRESsure CORRection HEAD OFFset STATe Short form SENS OFF STAT Function Asks if tare offset function is on or off Response 1 on O off Description This command enables SENS OFF to be used to set up the offset value K257 Issue No 2 4 24 Command Reference SENS FILT STEP Command Syntax SENSe PRESsure FILTer LPASs STEP number Parameter number filter step response value Short form SENS FILT STEP Function Used to set up the step response band component of the filter Default 0 minimum 0 maximum 100 0 Query Syntax SENSe PRESsure FILTer LPASs STEP Query STEP Short form SENS FILT STEP Function Ask for filter step response band parameter Response Number corresponding to filter step response value Description The digital low pass filter has a step response band configured as percentage of full scale e g defaults to 0 05 FS If the reading has changed by more than the configured step response value then the filtering is ignored for that conversion and the pressure goes instantly to the new value K257 Issue No 2 Druck DPI 515 SCPI User Manual 4 25 SENS FILT FREQ Co
61. unction Sets the altitude units Query Syntax UNIT ALTitude Function Queries the altitude units Short form UNIT ALT Response Altitude units FT or M Description This command sets the altitude units K257 Issue No 2 5 18 Aeronautical Command Reference UNIT SPE Command Syntax UNIT SPEed KN KPH MPH Parameter enumerated KN knots KPH kilometres per hour MPH miles per hour Short form UNIT SPE lt enumerated gt Function Sets the airspeed units Default KN Query Syntax UNIT SPEed Short form UNIT SPE Function Queries the airspeed units Response Airspeed units KN KPH or MPH Description This command sets the airspeed units K257 Issue No 2 Druck DPI 515 SCPI User Manual 6 1 6 Sensor Calibration Module Command Reference The following lists of all the SCM commands and queries that apply to the instrument 6 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 subsystem SENSe directs the instrument to measure parameters CALibration directs the instrument to calibrate the SCM parameters K257 Issue No 2 6 2 Sensor Calibration Module Command Reference Command Parameters Comments lt enumerated gt OFF MA M
62. yte Register clears If bit 7 of the Status Byte Register is set the Pressure Operations event register can be read by the query STAT OPER PRES returning the bits of events that have occurred Reading this register clears it and the associated status bit bit 7 At any time the instantaneous status of the pressure system can be read by the query STAT OPER PRES COND Instrument Errors Any instrument error that occurs either programming errors or execution errors is stored in an error queue which is separate from the main output queue The errors can be read by issuing the following command query SYST ERR The error queue can hold up to five errors Each time the error queue is queried the instrument responds with the next stored error in the queue The response consists of an error number followed by a string describing the error When the error queue is empty the instrument responds with 0 No error Querying the error queue clears the storage location in the error buffer If more than five errors occur before being queried the Queue overflow Error queue overflow message is placed into the error queue All subsequent errors are lost until the error queue is cleared K257 Issue No 2 Druck DPI 515 SCPI User Manual 3 11 3 6 Example program The following program example is written in QUICK BASIC and illustrates the use of various commands and responses Program Overview Initializes the IEEE 488

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gGE Druck - GE Measurement & Control