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7.3 Remote Station Verification Request
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7.3 Remote Station Verification Request
This request verifies the existence of the specified remote station, and corresponds to
the UNIX ping command. This request can be issued when the EN311 operating mode is
either run or standby mode. The EN311 will respond to this request if its operating mode
is either run or standby mode.
Remote station verification request (using the USEND_T instruction)
This is a request that verifies the existence of the specified remote station.
(1) Request command structure and error status
<Request command>
The input method of the remote station IP address to be verified is same as
the parameter setup request.
<Error status>
Error status examples
(2) Important notes
• This request is possible in run and standby modes if the local IP address is set up.
• The EN311 returns a response to this request in run and standby modes if the local IP
address is set up.
• If the remote station exists:Normal completion
• If the remote station does not exist (within 4 seconds):
Error status: Timeout occurred --- 2848(16#B20)
F0
CMD Destination EN311 module slot number
CMD+1 Command (16#0315)
CMD+2 D-IP address: IP address of the remote station
to be verified
CMD+3
CMD+4
F0
STATUS
=0: Normal completion, ± 0: Error status
Error status number Description
-5001(16#EC77) Command type error
2848(16#B20) Timeout occurred
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