Modbus slave problem

Hi,

I have a strange problem with Modbus slave object.

Modbus slave object is created on Lookout 6.1, and Modbus master is on Lookout 6.5. They communicate over wireless Ethernet connection. Connection works fine until it stops for some reason.

After that it never repairs.

But when we restart Lookout 6.1 with Modbus slave, communication works fine again.

This starts to happend almost once peer day.

Is there any ideas for help?

Thanks in advance