The I/O communication module BPlus must be supplied with power via the control cabinet of the respective engine. Connect the black wire L – and the red wire L + of the left relay connector (see position in the section Assignment) to the power supply via a terminal strip in the control cabinet.
To ensure error-free device communication in the CAN bus, make sure that the potential difference between the voltage supply grounds of the I/O communication modules BPlus and the PowerView4 is as small as possible.