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Persistent variables and input value from HMI
HVAC and Pumping Forum
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Hi,
I need advice on how to properly input value from HMI to variable to persistent variables.
Now if I input value from HMI and shut down and up power, the variable takes 0
I send persistent variables to ModbusTCP and read/write them in HMI
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Hi, @Bastian_Schmitz
1. I use TM251MESE and HMI XGTGT6330
2. Yes the HMI is the client and the PLC is a server.
3. Yes I use Persistent Memory in PLC
I think similarly, the HMI saves the variables before reading them from the PLC, but how to avoid that situation?
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