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Remote Programming 21
Programming Some Power Supply Functions
SAMPLE FOR POWER SUPPLY AT STAND-ALONE ADDRESS 6. SEQUENCE SETS UP CV MODE OPERATION,
FORCES SUPPLY TO SWITCH TO CC MODE, AND DETECTS AND REPORTS MODE CHANGE.
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Controller Using Agilent 82335A Interface
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5 ‘ < --------------- Merge SETUP.BAS here -------------------- >
1000 MAX.ELEMENTS=2 : ACTUAL.ELEMENTS=O :MAX.LENGTH=80 :ACT.LENGTH=O
1005 DIM OUTPUTS(2) :CDDES$=SPACE$(40)
1010 ISC=7 :PS=706
1015 ‘
1020 'Set up the Power Supply Interface for DOS driver
1025 CALL IORESET (ISC) 'Reset the interface
1030 IF PCIB.ERR < > NOERR THEN ERROR PCIB.BASERR
1035 TIMEOUT=3
1040 CALL IOTIMEOUT (ISC, TIMEOUT) 'Set timeout to 3 seconds
1045 IF PCIB.ERR < > NOERR THEN ERROR PCIB.BASERR
1050 CALL IOCLEAR (ISC) 'Clear the interface
1055 IF PCIB.ERR <> NOERR THEN ERROR PCIB.BASERR
1060 CALL IOREMOTE (ISC) 'Set Power Supply to remote mode
1065 IF PCIB.ERR <> NOERR THEN ERROR PCIB.BASERR
1070 ‘
1075 'Program power supply to CV mode with following voltage and current
1080 CODES$ = "VOLTAGE 7.8;CURRENT 480" :GOSUB 2000
1085 ‘
1090 'Query power supply outputs & print to screen
1095 CODES$ = "MEASURE:VOLTAGE?;CURRENT?" :GOSUB 2000 :GOSUB 3000
1100 VOUT = OUTPUTS(I)
1105 IOUT = OUTPUTS(2)
1110 PRINT "The output levels are "VOUT" Volts and "IOUT" Amps"
1115 ‘
1120 'Program triggered current level to value insufficient to maintain
1125 'supply within its CV operating characteristic
1130 CODES$ = "CURR:TRIG 50" :GOSUB 2000
1135 ‘
1140 'Set operation status mask to detect mode change from CV to CC
1145 CODES$ = "STAT:OPER:ENAB 1024;PTR 1024" :GOSUB 2000
1150 ‘
1155 'Enable Status Byte OPER summary bit
1160 CODES$ = "*SRE 128" :GOSUB 2000
1165 ‘
1170 'Arm trigger circuit and send trigger to power supply
1175 CODES$ = "INITIATE;TRIGGER" :GOSUB 2000
1180 ‘
1185 'Wait for supply to respond to trigger
1190 FOR I= 1 to 100 :NEXT I
1195 ‘
1200 'Poll for interrupt caused by change to CC mode and print to screen
1205 CALL IOSPOLL (PS,RESPONSE)
1210 IF (RESPONSE AND 128)< >128 THEN GOTO 1240 'No OPER event to report
1215 CODES$ = "STATUS:OPER:EVEN?" :GOSUB 2000 'Query status oper register