Mitsubishi Electric MELSEC iQ-R Series - Page 1116

1114
8 BUILT-IN ETHERNET FUNCTION INSTRUCTIONS
8.3 Predefined Protocol Support Function Instruction
• If a cancel request is issued before completion of transmission
The following figure shows the operation when transmission has not been completed while the protocol execution status is "2: Sending".
• If a cancel request is issued upon completion of transmission
The following figure shows the operation when transmission has been completed while the protocol execution status is "2: Sending".
OFF
OFF
OFF
OFF
ON
ON
The Ethernet module will no
longer receive data nor
execute protocols.
1: Cancellation requested 2: Cancellation completed
Protocol cancellation
(for the connection number
specified by (s1))
The processing
stops.
CPU module
External device
SP.ECPRTCL instruction
CPU module
Completion device (d)
Send packet
Send packet
Completion status
indication device (d)+1
Completed with an error
Standby time
The Ethernet module finishes
sending the packet currently
being sent.
OFF
OFF
OFF
OFF
ON
ON
The Ethernet module will
no longer receive data
nor execute protocols.
1:
Cancellation
requested
2:
Cancellation
completed
Protocol cancellation
(for the connection number
specified by (s1))
The processing
stops.
CPU module
External device
SP.ECPRTCL instruction
CPU module
Completion device (d)
Send packet
Send packet
Completion status
indication device (d)+1
Completed with
an error
Standby time