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Measuring the Delay between Request and response of ModbusTCP in S7-1200

Created by: Newtothis at: 8/8/2012 2:33 PM (3 Replies)

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8/8/2012 2:33 PM	Rate (0)
Newtothis Posts: 6 Rating: (0)	Hi All, I want to check the Time taken between Request and Response of the ModbusTCP comunication in S7-1200. How can i write a PLC program to calculate the elapsed time between Request and Reply of ModbusTCP communication. please help in this. Thanks
Newtothis Posts: 6 Rating: (0)
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8/8/2012 2:44 PM	Rate (0)
Wüstenräuber Gold Member Joined: 10/3/2008 Last visit: 1/14/2026 Posts: 996 Rating: (129)	Hi, use "wireshark". You can google and download the tool. Wüstenräuber

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8/8/2012 2:50 PM	Rate (0)
Newtothis Posts: 6 Rating: (0)	Thanks for replying. Is there any way i can do this,using S7-1200 PLC?
Newtothis Posts: 6 Rating: (0)
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8/8/2012 2:56 PM	Rate (0)
Wüstenräuber Gold Member Joined: 10/3/2008 Last visit: 1/14/2026 Posts: 996 Rating: (129)	Hi, there are some timer functions, e.g. TON and TOF. You can start the time with sending of the request and stop the time if you get the response. Wüstenräuber
	Last edited by: Wuestenraeuber at: 8/8/2012 2:57 PM
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