Mitsubishi Electric QJ71E71-100 User Manual page 269

(3) Functions
• This instruction reads the receive data (for fixed buffer communications) of the connection specified by (S1)
for the module specified by Un.
(D1)
Receive data length
[Operation while the BUFRCVS instruction is being executed]
Program
BUFRCVS instruction
• The Z.BUFRCVS instruction is executed in an interrupt program, and the process is completed within one
scan.
● To read receive data using an interrupt program, configure both the interrupt settings and interrupt pointer setting
parameters of the programming tool. (
● When receive data is read from the same connection, the BUFRCV instruction (for the main program) cannot be used
together.
(4) Errors
• If a dedicated instruction ends with an error, Diagnostic errors (SM0) turns on, and the error code is stored in
SD0.
CPU module
Receive data
BUFRCVS
:
:
Receive data
Interrupt program
Receiving data
Page 149, Section 12.5.1)
CHAPTER 15 DEDICATED INSTRUCTIONS
E71
Fixed buffer data area
No.1
:
No.n
:
No.16
Scan
Executed
Storing
the receive data
END process
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