OPTO 22 PAMUX, User Manual

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PROGRAMING WITH THE PAMUX DRIVER
Pamux User’s Guide
3-15
READ DIGITAL BANK, EXPANDED 8
P
URPOSE
:
Reads a bank of eight digital I/O points.
C
OMMAND
T
YPE
:
Digital
P
ARAMETERS
:
COMMAND Contains the value 8.
ADDRESS
Contains the address of the Pamux brain board.
POSITION Contains the bank number.
VALUE ARRAY
Each element of this array contains returned data corresponding to a module
position within the bank. Element 0 corresponds to the first module position,
element 7 corresponds to the last. If an element is set to -1, the corresponding
module position is active (on). If an element is set to 0, the corresponding
module position is inactive (off).
E
XAMPLE
:
This example reads the status of eight points at address 32 at bank 0 and then displays the status
of each point.
100 COMMAND% = 8 ‘ Read Digital Bank, Expanded
110 ADDRESS% = 32 ‘ Address of brain board
120 POSITION% = 0 ‘ Bank number
130 GOSUB 1000 ‘ Call the driver
140 FOR I% = 0 TO 7
150 IF VALUE%(I%) = 0 THEN STAT$ = "OFF"
ELSE STAT$ = " ON" ‘ Update STAT$
160 PRINT "MODULE "; I%; " :"; STAT$
170 NEXT
.
.
1000 CALL Pamux(ERRCOD%,ADDRESS%,COMMAND%,POSITION%,VALUE%(0))
1010 IF ERRCOD% < 0 THEN GOTO 2000
1020 RETURN