Capt David Kilmer

I run a sailboat with Cariboni hydraulics and Vision 230 master and slave PLCs. The system was installed and programmed in 2007 by Cariboni. When we booted up this season, we got a CANbus fault as shown in the photo. And we have no hydraulic function. Our team has checked voltage, cable continuity and timer settings. What else can we do here in the field? I am immensely grateful for any help you can provide.