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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 parameters stored in a memory card to the PLC CPU
110 ' (Four network modules are connected. All the modules are control stations. Network parameter
capacity: 16 k bytes)
120 DIM TBL1%(10),A%(150),TBL2%(10),B%(10)
:
'Defines arrays
130 OPEN "0:PROG14.DAT" FOR INPUT AS #1
:
'Opens the file
140 FOR J=&H0 TO &H3F80 STEP 128
150 FOR I=0 TO 127
160 INPUT #1,A%(1)
170 NEXT I
180 TBL%(0)=255
:
'Specifies the station number to
communicate with to the local station
190 TBL%(1)=14
:
'Specifies to write parameters
200 D!=J
:
'Specifies the starting address of the
parameter data to be written
210 H!=INT(D!/65536!)
220 L!=D!-H!*65536!
230 H$=RIGHT$("0000"+HEX$(H!),4)
:
'Higher byte of the starting address of the
parameter data
240 L$=RIGHT$("0000"+HEX$(L!),4)
:
'Lower byte of the starting address of the
parameter data
250 TBL1%(2)=VAL("&H"+L$)
:
'Stores the lower byte in the control table
260 TBL1%(3)=VAL("&H"+H$)
:
'Stores the higher byte in the control table
270 TBL1%(4)=128
:
'Specifies the number of bytes to be written
280 PCWT TBL1%( ),A%( )
:
'Executes the write operation
290 NEXT J
300 CLOSE
:
'Closes the file
310 TBL2%(0)=255
:
'Specifies the station number to
communicate with to the local station
320 TBL2%(1)=15
:
'Specifies to analyze the parameter data
330 PCWT TBL2%( ),B%( )
:
'Executes the analysis
340 END
