Mitsubishi Electric MELDAS C6 Programming Manual page 342

Execution conditions
The execution condition for BUFRCV is as shown below.
Command OFF
BUFRCV
Program example
The program to receive data stored in R600 and above with the port No. :6001 and the connection
No.:1.
27
ZP.BUFRCV
No. of
Command
steps
27
28 ZP.BUFRCV
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) Refer to the BUFRCV command reception buffer after 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
BUFRCV
ON
D120
"U20" K1
LD M302
K1
"U20"
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R600
M260
Device
D120 R600 M260