Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1117

• If a cancel request is issued while waiting for reception
The following figure shows the operation when the protocol execution status is "3: Waiting for data reception".
CPU module
SP.ECPRTCL instruction
Completion device (d)
Completion status
indication device (d)+1
Protocol cancellation
(for the connection number
specified by (s1))
CPU module
External device
• If a cancel request is issued during receiving
The following figure shows the operation when the protocol execution status is "4: Receiving".
CPU module
SP.ECPRTCL instruction
Completion device (d)
Completion status
indication device (d)+1
Protocol cancellation
(for the connection number
specified by (s1))
CPU module
External device
OFF
OFF
t: Receive wait time or destination
existence confirmation time
OFF
OFF
t: Receive wait time or destination
existence confirmation time
ON
ON
1: Cancellation requested
The processing
stops.
ON
ON
1: Cancellation requested
The Ethernet module will
no longer execute protocols.
Receiving data
The Ethernet module stops the
processing including the verification
The processing
and general data processing, and
stops.
forcibly terminates the execution of
the instruction.
Receive data
8 BUILT-IN ETHERNET FUNCTION INSTRUCTIONS
8.3 Predefined Protocol Support Function Instruction
OFF
Completed with an error
OFF
2: Cancellation completed
The Ethernet module will
no longer execute protocols.
OFF
Completed with an error
OFF
2: Cancellation completed
1115
8