Mitsubishi MELSEC QS Series, User Manual

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APPENDICES
Appendix 7 Dedicated Instructions which can be used in Safety CPU
Module
App
- 39
9
De
vi
ce E
xpl
an
ati
on
10
CP
U Mo
du
le P
ro
cessin
g
Ti
m
e
11
Pr
oced
ur
e for
W
ri
tin
g
Pr
ogr
am
to
C
P
U Mo
du
le
Ap
pe
nd
ice
s
Ind
e
x
(4) BUFSND instruction
Fig.App.4 shows a program example where buffer memory addresses are replaced
with I/O signals in the program for sending data from the fixed buffer of the connection
No.1.
When the I/O signals of the Ethernet module are X/Y00 to X/Y1F
TableApp.33 Buffer memory address - I/O signal correspondence
Buffer memory address
in hexadecimal (decimal)
I/O signal
5000
H
(20480): Open completion signal
X10: Connection 1 open completion
Fig.App.4 Program example using I/O signals
Normal completion processing
Abnormal completion processing
BUFSND
instruction
completion
device
BUFSND
instruction
completion
device
BUFSND
instruction
abnormal
completion
device
BUFSND
instruction
abnormal
completion
device
Send
instruction
1PLS
Send
instruction
1PLS
Send data
setting
Send data
setting
Send data
setting
Send data
length setting
(number of
words)
Send data
length
setting
(number of
words)
Send
instruction
<<<Fixed buffer No.1 sending program>>>
Initial
normal
completion
signal Connection
1 open
completion
signal
45
M300
ZP.BUFSND K1 "U0" D3000
M0V
M0V
M0V
M0V
D303 K8901
D5678
K1234
K3
M3000
M3100 X19
0
24
X10
PLS
D302
D301
D300
M3000
D300 M300
M301
M301