Sigma - ModBMS - Configured as a OPC Server - DCOM settings and Matrikon OPC client.

[Product_Support]

Issue

OPC values are visible via an OPC client on the local PC, but not accessible from another OPC client across the network.

Product Line

Satchwell BAS & Sigma

Environment

• Sigma ModBMS
• Matrikon OPC Client

Cause

The DCOM settings on the OPC Server PC are not correctly configured for remote access.

Resolution

1. Configure DCOM Settings
   Refer to the official Matrikon OPC documentation for detailed instructions.
   👉 Download Matrikon OPC DCOM Configuration Guide

2. Install Matrikon OPC Client
   👉 Download Matrikon OPC Explorer

3. Launch Matrikon OPC Explorer

   • Navigate to Network Neighborhood
   • Locate the OPC Server PC
   • Select ModBMS-OPCserver

     

4. Create a New Group

   • Right-click and choose Add Group

     

   • Name the group as needed
   • Add required tags

     

5. Validate Tags

   • Right-click the group

     

   • De-select Use Async I/O

     

     

   • The OPC values should now be displayed

     

Additional Resources

📎 Using OPC via DCOM with Microsoft Windows XP SP2