Mitsubishi MELSEC QS Series User Manual page 250

APPENDICES
<<<Fixed buffer No.1 receiving program (Main program)>>>
App
Appendix 7 Dedicated Instructions which can be used in Safety CPU
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Module
(3) BUFRCV instruction
Fig.App.3 shows a program example where buffer memory addresses are replaced
with I/O signals in the program for reading received data from the fixed buffer of the
connection No.1.
TableApp.32 Buffer memory address - I/O signal correspondence
Buffer memory address
in hexadecimal (decimal)
5000 (20480): Open completion signal
H
5002 (20482): Open request signal
H
5005 (20485):
H
Fix buffer receive status signal
When the I/O signals of the Ethernet module are X/Y00 to X/Y1F
M5100 X19
0
Receive Initial
instruction normal
completion
signal
M5000
35
Receive
instruction
1PLS
M500 M501
48
BUFRCV BUFRCV
instruction instruction
completion abnormal
device completion
device
M501
BUFRCV
instruction
abnormal
completion
device
X10: Connection 1 open completion
Y8: Connection 1 open request (This
corresponding signal cannot be used since the
signal does not turn ON/OFF by the OPEN
instruction.)
X10: Connection 1 open completion
X10 X0 M500
Connection Fixed BUFRCV
1 open buffer 1 instruction
completion open completion
signal completion device
signal
ZP.BUFRCV
Fig.App.3 Program example using I/O signals
I/O signal
"U0" K1 D5000
Normal completion processing
Abnormal completion processing
PLS M5000
Receive
instruction
1PLS
D500 M500
BUFRCV
instruction
completion
device