Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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20 SERIAL COMMUNICATION INSTRUCTIONS
20.5 Sending Data Using the Bidirectional Protocol
Precautions
• The following table summarizes the processes that take place if another instruction is issued while the G(P).BIDOUT
instruction is active or the G(P).BIDOUT instruction is issued while another instruction is active with the same channel.
*2 The following instructions are not available with the same channel as for the G(P).BIDOUT instruction because they use a
communication protocol different from the one used by this instruction. In addition, if these are used with the same channel as for the
G(P).BIDOUT instruction, a communication protocol setting error (7FF2H) will occur.
Operation error
Instruction to execute
concurrently
*2
Possibility of
concurrent execution Handling for concurrent execution
G(P).BIDOUT  The instruction is ignored and does not start processing until the active instruction
completes.
Concurrent execution is, however, possible if they use different channels.
G(P).BIDIN  
ZP.CSET

The instruction is ignored and does not start processing until the active instruction
completes.
Concurrent execution is, however, possible if they use different channels.
G(P).PUTE
 
G(P).GETE
Z.BUFRCVS
G(P).SPBUSY
ZP.UINI

A dedicated instruction concurrent execution error (7FF0H) occurs in the second
instruction.
• G(P).ONDEMAND, G(P).CPRTCL, G(P).BIDOUT, and G(P).BIDIN instructions
Error code
((s1)+1) Description
7000H to 7FFFH

MELSEC iQ-R Serial Communication Module User's Manual (Application)