Mitsubishi Q00JCPU User Manual page 697

10
DEVICE EXPLANATION
[Program example 1]
[Program example 2]
[Program example 3]
3) Checking the file register capacity
• Check The file register capacity used for each sequence program.
• Determine if the file register capacity exceeds the number of points used,
on the basis of the total file register capacity set in SD647 in the sequence
program.
The file register "range of use" is checked at the beginning of each program.
SM400
< SD647 K4
M0
M0 Transfer command
The file register "range of use" is checked after executing the QDRSET instruction.
SM400
< SD647 K4
M0
M0
Transfer command
For block switching.
SM400
< SD647 K33
M0
M0
Block switching command
Figure 10.77 File register checking program example
(c) File register file deletion
Choose [Online] [Delete PLC data] on GX Developer to delete the unnecessary
file register file.
Designates 4k points
M0
Y0
MOVP K4X20 R0
QDRSET "1:ABCD"
M0
Y0
MOVP K14X20 R0
M0
Y0
RSET K1
10.7 File Register (R)
10.7.6 Precautions for using file registers
Final file register
range check
Alarm processing
Writing to file
register
File register is changed
to drive 1 ABCD.
Final file register
range check
Alarm processing
Writing to file
register
Final file register
range check
Alarm processing
Switching to block 1
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