MORNINGSTAR MSC-1 PC Meterbus Adapter Instructions

June 15, 2024
Morningstar

MORNINGSTAR MSC-1 PC Meterbus Adapter Instructions

Description:

The PC Meter bus Adapter (model: MSC-1) converts the Morning star Meter Bus RJ-11 electrical interface to a standard RS-232 interface which allows communication between a PC and a Morning star charge controller or inverter*. The MSC is required for programming custom charging set-points and logging data using Morning star’s Ms View PC software. The MSC is also required for serial communications with any 3rd party hardware that supports Mod bus communication.

  • Controllers or inverters with a Meter bus port, but without a serial port or other communications port

Wiring Diagram:

Charge Controller or Inverter

**COM Settings


  • 9600 BAUD
  • 8 data bits
  • 1 or 2 stop bits
  • No parity
  • No Hardware Flow Control

PC or 3 rd party hardware

Operation:

The MSC is externally powered by the Morning star charge controller or inverter via the RJ-11 connection. A status LED indicates power and communication status. LED indications are as follows:

Green LED – power is applied with correct polarity.

Red/Orange LED flicker – data is successfully being transmitted or received through the adapter. (electrical pin-out diagrams on back)

Electrical Pin-outs:

Notes:

  1. POWER = V battery Valid range: 8V – 15.5Vdc
  2. RJ-11 cable wiring is straight through (standard telephone cord)

Notes:

  1. RS-232 GND is NOT the same ground as RJ-11! The MSC is fully opto-isolated on all pins.
  2. + power must be asserted on DTR/DSR and/or RTS/CTS pins
  3. – power must be asserted on RTS/CTS and/or RX pins
  4. Pins 4 (DTR) and 6 (DSR) are internally connected
  5. Pins 7 (RTS) and 8 (CTS) are internally connected

Modbus documentation including register locations, scaling, and definitions can be found on Morning star’s website at:
www.morningstarcorp.com
support@morningstarcorp.com

References

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>

Related Manuals