We can get information to the modbus server from our modbus card in the PLC but the information is not valid or making any sense.

 

Have you tried MatrikonOPC Server for Modbus? it's easy to use. Here is a link to download it for free:

http://www.matrikonopc.com/opc-drivers/opc-modbus/base-driver-details.aspx

Let me know if you need any help

Wassim Daoud
Global Solutions Architect
www.MatrikonOPC.com