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reset variables logo and ktp 400

Created by: PrzemekGra at: 2/1/2024 10:09 AM (4 Replies)

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2/1/2024 10:09 AM	Rate (0)
PrzemekGra Member Joined: 12/27/2018 Last visit: 2/5/2024 Posts: 14 Rating: (0)	Hello I have a problem with my logo and ktp 400. When I have a voltage loss, the network variable reset. Take the valoue 0. How can I retain network variables ? best regards Przemek Attachment Warsztat_System_chlodzenia.06.02.2022.zip (401 Downloads)

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2/1/2024 10:25 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/6/2024 Posts: 34150 Rating: (4254)	The LOGO! VM memory is not retentive. In the event of a power failure, the memory loses all values. Therefore, do not write to a NAI, but rather write to a parameter of an analog MUX or a mathematical instruction. The values written directly into the parameters of these blocks are stored in flash memory and are therefore protected against power failures. You example for VW2.

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2/1/2024 11:01 AM	Rate (0)
PrzemekGra Member Joined: 12/27/2018 Last visit: 2/5/2024 Posts: 14 Rating: (0)	I did as you write but it didn't work. In simulation mode i can't even put on value. it's zero all the time.

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2/1/2024 1:02 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/6/2024 Posts: 34150 Rating: (4254)	And what simulations mode mean you? LSC in simulation? That didn't work, only in a real LOGO!. Please note: Simulation is simulation, real LOGO! is real LOGO!. Not all, that work with real LOGO!, work in simulation mode of LSC.

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This contribution was helpful to 1 thankful Users PrzemekGra

2/2/2024 8:37 AM	Rate (0)
PrzemekGra Member Joined: 12/27/2018 Last visit: 2/5/2024 Posts: 14 Rating: (0)	I did as you wrote, everything works fine. Thanks a lot. [snip]
	Last edited by: Jen_Moderator at: 02/05/2024 07:43:24 Text formatting optimized. Last edited by: Jen_Moderator at: 02/05/2024 07:48:19 Division of question into separate topic.
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