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11 INSTRUCTIONS AND FUNCTIONS
Program Example
10 ' This program reads the printer status
20 DIM TBL%(1)
30 ZOPEN #4
40 TBL%(0)=128
50 ZCNTL #4,0,TBL%( )
60 A=RDSET(0,TBL%(1))
70 B=RDSET(1,TBL%(1))
80 C=RDSET(2,TBL%(1))
90 PRINT "The printer status"
100 IF A=1 THEN PRINT "Terminal is normal" ELSE PRINT "Terminal error!"
110 IF B=1 THEN PRINT "Out of paper!" ELSE PRINT "Paper supplied"
120 IF C=1 THEN PRINT "The terminal is connected" ELSE PRINT "The terminal is not connected!"
130 ZCLOSE #4
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:
' Defines an array
:
' Opens the communication channel
:
' Specifies to read the printer status
:
' Executes the read operation
:
' Reads the bits
:
' Displays the result
MELSEC-Q
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