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Slow transfer data from S7-300 to S7-400

Created by: ronych_jaa at: 12/29/2017 10:34 AM (20 Replies)

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12/29/2017 10:34 AM	Rate (0)
ronych_jaa Advanced Member Joined: 12/21/2017 Last visit: 1/29/2025 Posts: 56 Rating: (0)	Hello! I transfer the data from the CPU 315-2dp to the CPU 416-2dp via ISO-on-TCP. my CPs: CP343-1 (v3.1), CP434-1 (v2.1). Communications in NetPro established! S7-300: Data is transmitted by FC5 'AG_SEND' v4.2. No error! S7-400: Data is recived by FC6 'AG_RECV' v1.2. No error! I have problem: transmission delay about 6-7 seconds! But! Data transmitted from s7-400 to s7-300 go without delay. Execution status FC5:16#8181. Rarely appears 16#0000. What is the reason?
	Last edited by: ronych_jaa at: 12/29/2017 10:35:17 AM Last edited by: ronych_jaa at: 12/29/2017 10:36:01 AM Last edited by: ronych_jaa at: 12/29/2017 10:36:27 AM
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12/29/2017 11:01 AM	Rate (0)
Duris_I Diamond Expert Joined: 4/28/2015 Last visit: 2/24/2025 Posts: 10832 Rating: (836)	Hello, can you pls explain generally how you execute Send/Recv blocks in S7-300 side? You can also zip screenshots of your code where are blocks located. What connection settings?
	With best regards... Ivan Duris Flight: OMICO
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12/29/2017 12:36 PM	Rate (0)
mopS04 Platinum Expert Joined: 3/5/2014 Last visit: 8/5/2022 Posts: 5521 Rating: (1056)	hi ronych_jaa, The Status 8181h means "Job active" and 0000h "Job completed without error. Where do you call the functions? How is the wring? what components are between the two CPs? regards,
	FCK WAR! Be nice!
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12/30/2017 6:45 PM	Rate (0)
ronych_jaa Advanced Member Joined: 12/21/2017 Last visit: 1/29/2025 Posts: 56 Rating: (0)	Code S7-300 Attachment s7-300.jpg (275 Downloads)
	Last edited by: ronych_jaa at: 12/30/2017 6:49:57 PM
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12/30/2017 6:48 PM	Rate (0)
ronych_jaa Advanced Member Joined: 12/21/2017 Last visit: 1/29/2025 Posts: 56 Rating: (0)	Code S7-400 Attachment s7-400.jpg (253 Downloads)
	Last edited by: ronych_jaa at: 12/30/2017 6:50:30 PM
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12/30/2017 6:49 PM	Rate (0)
ronych_jaa Advanced Member Joined: 12/21/2017 Last visit: 1/29/2025 Posts: 56 Rating: (0)	NetPro (300-400) Attachment NetPro.jpg (277 Downloads)
	Last edited by: ronych_jaa at: 12/30/2017 6:51:16 PM
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12/31/2017 9:17 AM	Rate (0)
Duris_I Diamond Expert Joined: 4/28/2015 Last visit: 2/24/2025 Posts: 10832 Rating: (836)	Hello, I don't see how are your blocks executed, in OB1 or other OB? How you recognised that transmission delay is that long time? I recommend for first implement some timer and count check in S7-300 with AG_SEND output signals about transmission ok and error. What is your S7-300 max cycle time? After tests and results you can also prepare same check with receive in S7-400 and compare +/- results between both systems.
	With best regards... Ivan Duris Flight: OMICO
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12/31/2017 3:07 PM	Rate (0)
ronych_jaa Advanced Member Joined: 12/21/2017 Last visit: 1/29/2025 Posts: 56 Rating: (0)	Everywhere the blocks are called in OB1. I see the delay via VAT-tables PLCs. Attachment vat.jpg (300 Downloads)

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12/31/2017 3:08 PM	Rate (0)
ronych_jaa Advanced Member Joined: 12/21/2017 Last visit: 1/29/2025 Posts: 56 Rating: (0)	Cycle cpu 315 Attachment cycle cpu 315.jpg (251 Downloads)

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12/31/2017 3:08 PM	Rate (0)
ronych_jaa Advanced Member Joined: 12/21/2017 Last visit: 1/29/2025 Posts: 56 Rating: (0)	Cycle cpu 416 Attachment cycle cpu 416.jpg (255 Downloads)

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