Download Q Corresponding Ethernet Interface Module User`s Manual

APPENDICES
(b) When the instruction ends abnormally (timeout error at sending)
A
An error has occurred.
ECPRTCL instruction
Completion device
The device turns on
upon abnormal end.
Completion device + 1
Waiting time
to send
E71
t: TCP ULP timer
Send packet
The packet cannot be
sent or no response is
received from the
connected device.
Connected device
Discarded
Receive data
(c) When the instruction ends abnormally (timeout error of waiting time to receive)
An error has
occurred.
ECPRTCL instruction
Completion device
The device
turns on upon
abnormal end.
Completion device + 1
E71
Send packet
Connected device
Send packet
Receive data
Receive data
The receive data did not
match the receive packet
(expected packet).
*1
When the receive packet (expected packet) is not matched to the data by the waiting time to receive or when the
existence of a connected device cannot be checked within the time specified by the destination alive check timer (the
time calculated based on the destination existence confirmation starting interval timer value, destination existence
confirmation interval timer value, and Destination existence confirmation resending time), the instruction ends
abnormally.
For the error occurred when the communication ends abnormally, refer to the error code stored in the buffer memory.
(
Page 304, Section 16.6.3)
375
Appendix 8 Operation Image and Data Structure of Predefined Protocol
Appendix 8.1 Operation image of each communication type of protocol
t: waiting time to receive or the time
specified by the destination alive check timer*1
Waiting time
to send