Get Invalid System Enumeration error when polling an XDriver point


After configuring an XDriver point, clicking the refresh button on the editor results in an error "Invalid system enumeration" and no value response from the Slave device.

Product Line

Andover Continuum


  • BCX1
  • Cyberstation 1.9X
  • Modbus RTU


There is a register number shift (+1 or -1) some equipment uses. The registers listed in the manual do not actually exist.


Add a register number shift (+1 or -1) to the register number listed in the manual.