D - Example Programs
Example 2. IBM Controller Using National Interface
990’---------------------- Merge DECL.BAS here ------------------------
1000 ’DC Source Variable = PS% ;
1010 D$=SPACE$(60):OUTPUT$=SPACE$(40):BDNAME$="PS%"
1015 DIM OUTPUT(2)
1020 ’
1025 ’Set up dc source interface for DOS driver
1030 CALL IBFIND(BDNAME$,PS%)
1035 IF PS%
1040 CALL IBCLR(PS%)
1045 ’
1050 ’Program dc source to CV mode with following voltage and current 1055 CODES$ = "VOLTAGE MAX;CURRENT MAX" :GOSUB 2000
1060 ’
1065 ’Query dc source outputs and print to screen
1070 | CODES$ = "MEASURE:VOLTAGE?;CURRENT?" | :GOSUB 2000 :GOSUB 3000 | ||||
1075 | VOUT = OUTPUT(1) |
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1080 | IOUT = OUTPUT(2) |
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1085 | PRINT"The programmed levels are "VOUT" Volts and "IOUT" Amps" | |||||
1090 | ’ |
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1095 | ’Program triggered current level to value insufficient to maintain | |||||
1100 | ’supply within its CV operating characteristic | |||||
1105 | CODES$ = "CURR:TRIG MIN" | :GOSUB 2000 |
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1110 | ’ |
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1115 | ’Set operation status mask to detect mode change from CV to CC | |||||
1120 | CODES$ = "STAT:OPER:ENAB 1024;PTR 1024" |
| :GOSUB 2000 | |||
1125 | ’ |
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1130 | ’Enable Status Byte OPER summary bit |
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1135 | CODES$ = "*SRE 128" | :GOSUB 2000 |
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1140 | ’ |
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1145 | ’Arm trigger circuit and send trigger to dc source | |||||
1150 | CODES$ = "INITIATE:SEQUENCE1;TRIGGER" |
| :GOSUB 2000 | |||
1160 | ’Wait for supply | to respond to trigger |
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1165 | FOR I= 1 to 100 | :NEXT I |
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1170 | ’ |
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1175 | ’Poll for interrupt caused by change to CC mode and print to screen | |||||
1180 | SPOL%=0 |
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1185 | CALL IBRSP(PS%,SPOL%) |
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1190 | IF (SPOL% AND 128) = 128 THEN POLL = 1 |
| ’Set interrupt flag on | |||
OPER bit |
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1195 | IF POLL <> 1 THEN GOTO 1230 |
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service |
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1200 | "CODES$ = "STAT:OPER:EVEN?" | :GOSUB 2000 | ’Query status oper | |||
register |
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1205 | CALL IBRD(PS%,OEVENT$) |
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| ’Read back event bit | |
1210 | IF IBSTA% |
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1215 | OEVENT=VAL(OEVENT$) |
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1220 | IF (OEVENT AND 1024) = 1024 THEN PRINT "Supply switched to CC mode." | |||||
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