Multiple instances of MBusOPC.exe

When there are two or more instances of the process MBusOPC.exe this is because the OPC clients run with different users and each user starts their own instance of MBusOPC.exe. Therefore, Windows has not been able to synchronize so that each OPC client uses the same process of the M-Bus OPC server.

When there are several instances of MBusOPC.exe, there is a risk that the OPC server will not get in touch with the M-Bus converters and the M-Bus meters. As a result, OPC clients will not receive the desired data from the M-bus meters.

To control Windows to use only one instance of MBusOPC.exe, you must control in the DCOM settings which users should own the process.

• Start DCOM settings (dcomcnfg.exe).
• Browse to Konsolrot -> Komponenttjänster -> Datorer -> Den här datorn -> DCOM-konfiguration.
  
  

• Find MBus.
• Right-click and select Properties.
• Select the tab Identity.
• Select This user.
• Enter the fields for the user who will own the process.

• Press the OK.