Jump to content

connection problem with V350 PLC to Kepwere OPC  using modbus TCPip

Recommended Posts


Hi all I have  connection problem with V350 PLC (slave) to Kepware OPC  using modbus TCP/IP.

some background :

1. the plc holding  register is MI201 (the address we maintain is 400202, data type: short ).

2.all other values that was needed to create the tag was maintained as default values .

3. I have checked there is a  ping  from my machine to the plc . 

4.when I running the QC in the OPC  the tag quality is" BAD" and the value is "unavailable".

what you supposed my next step should be to solve this issue and read the value ? 


Link to comment
Share on other sites

  • 9 months later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...