Bad tags in all my OPC Modbus communication PLC

in my tags section all my opc tags showing bad value why

A couple of things to try:
• Ping your plc from a computer on the network and see if it's talking
• Go to the web interface and check the device connections

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thanks for your replay.

im trying to connect my Schneider M580 PLC with IGNITION Scada software

in device connections it was showing connected and plc ping and connected.
but tags are showing bad here im using Modbus TCP Communication protocol.

Perhaps you can find something in here that is useful:

This one seem similar:
Link Tags from Schneider

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Hi justinwards

Thank you so much for this its really a big help for me thanks thankyou so much, now im able to read and write data.