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Can TSend_C block detect network cable disconnection on server side?

3/22/2023 8:37 AM	Rate (0)
Wayne1314 Posts: 5 Rating: (0)	If runTSend_C block in one PLC and keep sending data every 1 second via TCP connection type to TCP server on one Windows host, the PLC and Windows host connect to same switch, then if plugout ethernet cable of Windows host, would TSend_C block return sending successfully or failed?
Wayne1314 Posts: 5 Rating: (0)	Last edited by: Wayne1314 at: 03/22/2023 08:37:58
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3/22/2023 9:02 AM	Rate (0)
Towome Platinum Expert Joined: 7/9/2015 Last visit: 12/17/2025 Posts: 4493 Rating: (644)	Hi, TSEND_C gives back a status like 80C6 or 80C4 if there is a communication error. If you want to be on the safe side, use the TDIAG instruction. With the instruction "T_DIAG" you check the state of a connection and read further information about the local endpoint of this connection. Regards, Towome
	If my post was useful, please rate me - if not, please tell me - thank you!
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3/22/2023 10:27 AM	Rate (0)
sancruz Gold Expert Joined: 3/11/2019 Last visit: 12/9/2025 Posts: 1653 Rating: (322)	Hi, more information can be founde here: T_DIAG: Checking the connection regards sancruz
	Feedback appreciated, please rate
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This contribution was helpful to 1 thankful Users Towome

3/24/2023 2:44 AM	Rate (0)
Wayne1314 Posts: 5 Rating: (0)	Thanks all.
Wayne1314 Posts: 5 Rating: (0)
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This contribution was helpful to 1 thankful Users Towome

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