343
APPENDICES
A
Appendix 8 Operation Image and Data Structure of Predefined Protocol
Appendix 8.1 Operation image of each communication type of protocol
(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.
The operation image of "Send&Receive" is as follows.
(a) When the instruction ends normally
Receive data 1
Receive data 2
DataHeader
Data
Data
Header
Send data
Data Header
Receive packet
(expected packet)
E71
Not matched
Matched
Received
Sixteen receive packets
can be specified.
Connected
device
Discarded
E71
Connected device
ECPRTCL instruction
Completion device
Send packet Receive data
Send packet Receive data
Completion device + 1
The receive data matched
the receive packet
(expected packet).
Waiting time
to send
Waiting time
to receive