Mitsubishi Electric MELDAS C6 Programming Manual page 338

Execution conditions
The execution condition for BUFSND is as shown below.
Command OFF
BUFSND
Program example
The program to send a connection to send in R500 and above with the port No. :6000 and the
connection No.:5.
M302
27
ZP.BUFSND
No. of
Command
steps
27
28 ZP.BUFSND
41
Cautions
(1) Even if the dedicated commands (OPEN, CLOSE, BUFSND, BUFRCV) are executed with the
high-speed PLC, the actual operation will take place at the same timing as the medium-speed
PLC. Thus, the dedicated command should be executed with the medium-speed PLC.
(2) Do not update the BUFSND command transmission buffer until the command is completed.
Failure to observe this could result in malfunctions.
(3) If the connection No. is not within the specified range, an error completion (completion status
C1A6) will occur, but the completion device and completion device +1 will not turn ON.
9. Exclusive Commands 1
BUFSND
ON
D220
" U20 " K5
LD M302
"U20" K5
- 329 -
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R500
M160
Device
D220 R500 M160