Contec bx200 SERIES, User Manual

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4. Each Component Function
BX-2x0-DCxxxx, BX-2x0D-DCxxxx User’s manual
41
(2) Example programming
The following example is written in Intel 8086 assembly language.
The utility in IPC-SLIB-01 allows you to use this language in Windows.
(For the latest version of IPC-SLIB-01, visit the CONTEC website.)
;-------------------------------------------
;Open
;-------------------------------------------
CHK_OPEN1:
MOV
DX,2A4H
IN AL,DX
TEST AL,2 ;Check status of output
JNZ CHK_OPEN1
MOV DX,2A0H
MOV AL,87H ;Open Command
OUT DX,AL
CHK_OPEN2:
MOV
DX,2A4H
IN AL,DX
TEST AL,2 ;Check status of output
JNZ CHK_OPEN2
MOV DX,2A0H
MOV AL,87H ;Open Command
OUT DX,AL
CHK_OPEN3: ;Check status of input
MOV DX,2A4H
IN AL,DX
TEST AL,1
JZ CHK_OPEN3
MOV DX,2A0H
IN AL,DX ;Open success if AL = AAH
;-------------------------------------------
;Digital Input
;-------------------------------------------
CHK_DI1:
MOV
DX,2A4H
IN AL,DX
TEST AL,2 ;Check status of output
JNZ CHK_DI1
MOV DX,2A0H
MOV AL,90H ;Read DIO Command
OUT DX,AL
CHK_DI2:
MOV
DX,2A4H
IN AL,DX
TEST AL,1 ;Check status of input
JZ CHK_DI2