Advantech PCL-848A/B Manual de usuario descargar pdf (Pagina 51)

CHAPTER 4 PROGRAMMING TECBNIQUES

4.4. AD500 PMU Programming

10 'FILE NAME : EXAMPLE.4

20 'Program Example : AD500 PMU PROGRAMMING

30 '

40 'Purpose : This program measures 16 channel of voltages and

50 'display them. If the voltage of any channel is

60 'greater than a certain level then it close a

70 'relay to drive an alarm.

80 '

90 'Remark : The AD500 has a 16 channel multiplexer in alot 0

100 'and 16 channel relay actuator in slot 1. The };

110 'voltage measurement is done by an HP3478A DVM.

120 'The AD500 has an address of 9 and HP3478A has an

125 'address of 23.

130 '

140 'Initialization

150 '

160 CLS _

170 DIM V(16)

180 DEF SEG=&HD000

190 ABORT%=9 : ENTER%=6 : OUTPUT%=3: STATUS%=42: TRIGGER%=48

200 TIMEOUT%=45 : EOL%=12 : ADDR3478%=23 : ADDR500%=9

210 V.LIMIT=2 ‘ Voltage limit

220 'Set handshake timeout & init IEEE-488 bus

230 CALL ABORT% : FOR Y=0 TO 300 : NEXT Y ‘Wait for ADSOOA reset

240 T%=5000 : CALL TIMEOUT%(T%) ‘ Set timeout 5 sec.

250 'Init ADSOOA terminator

260 OUTEOL%=2 : OUTEOLS=CHR$(13) : INEOL%=0 : INEOLBYTE%=10

270 CALL EOL%(ADDR500%,OUTEOL%,OUTEOL$,INEOL%,INEOLBYTE%)

280 'Set the DVM and Multiplexer

290 '

300 D$=”FlT3RAN5"

310 CALL OUTPUT%(ADDR3478%,D$) ‘ Send DVM setting string

320 GOSUB 770 ‘ Error check

330 IF ER%<>0 THEN PRINT “Error when setting DVM.” : END

340 '

350 D$=”DW0,16;DW1,0";

360 CALL OUTPUT%(ADDR500%,D$) ‘ Open relays of Multiplexer

370 'and Actuator

380 GOSUB 770 ‘ Error check

390 IF ER%<>0 THEN PRINT “Error when setting AD500.” : END

400 '

410

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