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Reading an Error
Code
HP BASIC/WS Version
230
HP E1326B/E1411B Multimeter Register-Based Programming
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This program generates an error and then reads the error code from the
Query Response Register.
10
! Map the A16 address space in the HP V/382 and store the multimeter base
20
! address in a variable.
30
CONTROL 16,25;2
40
COM Base_addr
50
Base_addr=DVAL("C600",16)
60
! Call the subprogram which sets an invalid parameter, thus generating an error.
70
CALL Error_gen
80
END
90
! This subprogram checks each bit in the multimeter Status register.
100
! The subprogram is called by subprograms Wait_not_bsy, Wait_done, and
110
! Qry_ready to determine when a command and parameter can be written to
120
! Command and Parameter registers, and when an error code is in the Query
130
! Response register.
140
SUB Read_status(Status,Rdy,Done,Indardy,Qryrdy,Noerr,Pass_fail)
150
COM Base_addr
160
Status=READIO(-16,Base_addr+4)
170
Rdy=BIT(Status,0)
180
Done=BIT(Status,7) AND Rdy
190
Indardy=BIT(Status,4) AND Done
200
Qryrdy=BIT(Status,1) AND Done
210
Noerr=NOT (NOT (BIT(Status,6)) AND Done)
220
Pass_fail=BIT(Status,2)
230
SUBEND
240
! This subprogram calls Read_status to check status bit 0 to determine
250
! when a parameter can be sent.
260
SUB Wait_not_bsy
270
REPEAT
280
CALL Read_status(Status,Rdy,Done,Indardy,Qryrdy,Noerr,Pass_fail)
290
UNTIL Rdy
300
SUBEND
310
! This subprogram calls Read_status to check status bit 7. This bit determines
320
! the validity of bits 6 and 1, and determines when a command is finished .
330
SUB Wait_done
340
REPEAT
350
CALL Read_status(Status,Rdy,Done,Indardy,Qryrdy,Noerr,Pass_fail)
360
UNTIL Done
370
SUBEND
Continued on Next Page
Appendix C
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