CSMIO-IPS input voltage.

Hi all,
Looking at the CS-labs plugin in MACH3, (for csmio-ips controller) where it shows the input voltage reading that should be 24v, the input voltage on my setup is showing 48v. The power supply to the controller is definitely putting out 24v and all is working fine. Can't work out why it should be showing 48v on the plug in diagnostics screen. Anyone else out there have the same controller with the same strange voltage read out or any idea what may cause this?

Cheers

Al