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11 INSTRUCTIONS AND FUNCTIONS
Program Example
(1) Program example for a format 1 control table
100 ' A program example that writes the microcomputer program stored in a memory card to the PLC
CPU
110 ' (Capacity of the microcomputer program: 8 k bytes)
120 DIM TBL%(10),A%(150)
130 OPEN "0:PROG9.DAT" FOR INPUT AS #1
140 FOR J=&H0 TO &H1F80 STEP 128
150 FOR I=0 TO 127
160 INPUT #1,A%(I)
170 NEXT I
190 TBL%(0)=255
200 TBL%(1)=9
210 TBL%(2)=1
220 TBL%(3)=J
230 TBL%(4)=64
240 PCWT TBL%( ),A%( )
250 NEXT J
260 CLOSE
270 END
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:
'Defines arrays
:
'Opens the file
:
'Reads from the file
:
'Specifies the station number to
communicate with to the local station
:
'Specifies to write the microcomputer
program
:
'Specifies to write to the main
microcomputer program area
:
'Specifies the head address to be written
:
'Specifies the number of bytes to be written
:
'Executes the write operation
:
'Closes the file
MELSEC-Q
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