Mitsubishi Electric QJ71E71-100 User Manual page 385

(3) When the communication type is "Send&Receive"
When the packet is sent once and the sending completes normally, the status of the E71 changes to the receive
wait status. The process completes when the data received from a connected device match the receive packet
(expected packet) and the receive process is performed.
E71
Receive packet
(expected packet)
Data
The operation image of "Send&Receive" is as follows.
(a) When the instruction ends normally
ECPRTCL instruction
Completion device
Completion device + 1
E71
Connected device
Not matched
Header
Discarded
Matched
Header
Received
Waiting time
to send
Send packet
Send packet
Send data
Data Header
Receive data 1
Data
Receive data 2
Data
Waiting time
to receive
Receive data
The receive data matched
the receive packet
(expected packet).
Receive data
APPENDICES
A
Connected
device
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