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ModBus ethernet

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Hello,

 

I want to communicate between a PC (using LabView) and a Delta PLC using ModBus over ethernet.

I got it working by creating a I/O Server library and Create Bound Variables... . It read the values in the PLC registers at the addresses I was reading.

 

But it now automatically stops running without reading any of the PLC registers and gives an unidentified error (1967353901). Googling says it might be an incorrect/non-existent address. I removed all but one address and it still automatically stops running without reading anything; the shared variable is highlighted in the block diagram as the problem, but why did it read before?!

 

Thank you.


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