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MELSEC-Q
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)
:
'Defines arrays
130 OPEN "0:PROG9.DAT" FOR INPUT AS #1
:
'Opens the file
140 FOR J=&H0 TO &H1F80 STEP 128
150 FOR I=0 TO 127
160 INPUT #1,A%(I)
:
'Reads from the file
170 NEXT I
190 TBL%(0)=255
:
'Specifies the station number to
communicate with to the local station
200 TBL%(1)=9
:
'Specifies to write the microcomputer
program
210 TBL%(2)=1
:
'Specifies to write to the main
microcomputer program area
220 TBL%(3)=J
:
'Specifies the head address to be written
230 TBL%(4)=64
:
'Specifies the number of bytes to be written
240 PCWT TBL%( ),A%( )
:
'Executes the write operation
250 NEXT J
260 CLOSE
:
'Closes the file
270 END
