Using EWON as Modbus Slave

Ewon Support Ewon Flexy
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#1

Hi,

I’m using redundancy PLC system with B&R controllers and it’s not possible to use the PLC as a slave in this case. I need to pull data from the PLC using the PLC as Master and the EWON as slave.
I succeeded to do so when I tried on different PLC withoud redundancy which I use the PLC as slave and the EWON as master.
How can I do so when the EWON is the slave? I tried to configured the IO server to MEM instead of Modbus, but I can’t read any values.

Thanks,
Yair

#3

Hello Yair,

You will need to publish the MEM Tag as Modbus TCP when setting up the Tag in the Flexy. The address is offset by 40000, so you just need to set the holding register address.

Example 40010 = 10

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You will set the address in the function as 40010 on the Modbus side.

#4

Hi,

Thank you very much, it’s working now.

Yair