The PC Meterbus Adapter converts the Morningstar MeterBus RJ-11 electrical interface to a standard RS-232 interface which allows communication between a PC and a Morningstar charge controller or inverter. The MSC is required for programming custom charging setpoints and logging data using Morningstar’s MSView PC software. The MSC is also required for serial communications with any 3rd party hardware that supports Modbus communication.