11 - 201 11 - 201
MELSEC-Q
11 INSTRUCTIONS AND FUNCTIONS
Program Example
(1) Program example for a format 1 control table
100 ' A program example that reads the comment data from the PLC CPU and saves it on a memory
card
110 ' (Comment capacity: 3 k bytes)
120 OPEN"0:PROG10.DAT"FOR OUTPUT AS #1
:
'Opens the sequential file
130 DIM TBL%(10),A%(150)
:
'Defines arrays
140 TBL%(0)=255
:
'Specifies the station number to
communicate with to the local station
150 TBL%(1)=10
:
'Specifies to read comment data
160 TBL%(3)=128
:
'Specifies the number of bytes to be read
170 FOR J=&HO TO &HB80 STEP 128
180 TBL%(2)=J
:
'Specifies the starting address of the
comment data
190 PCRD TBL%( ),A%( )
:
'Executes the read operation
200 FOR I=0 TO 127
210 PRINT #1,A%(I)
:
'Writes to the sequential file
220 NEXT I
230 NEXT J
240 CLOSE #1 :'Closes the file
250 END
(2) Program example for a format 2 control table
100 ' A program example that reads the comment data from the PLC CPU and saves it on a memory
card
110 ' (Comment capacity: 3 k bytes)
110 OPEN"0:PROG10.DAT"FOR OUTPUT AS #1
:
'Opens the sequential file
120 DIM TBL%(10),A%(150)
:
'Defines arrays
130 TBL%(0)=256
:
'Specifies a format 2 control table
140 TBL%(1)=1
:
'Specifies network number 1
150 TBL%(2)=1
:
'Specifies station number 1
160 TBL%(4)=10
:
'Specifies to read comment data
170 TBL%(6)=128
:
'Specifies the number of bytes to be read
180 FOR J=&HO TO &HB80 STEP 128
190 TBL%(5)=J
:
'Specifies the starting address of the
comment data
200 PCRD TBL%( ),A%( )
:
'Executes the read operation
210 FOR I=0 TO 127
220 PRINT #1,A%(I)
:
'Writes to the sequential file
230 NEXT I
240 NEXT J
250 CLOSE #1
:
'Closes the file
260 END
