Operation Manual

Protect PV.250 Operating Instructions

Page 27 of 51 80000027023 BAL, en

6.1.3 Structure of the MultiCom CCC Interface

LED

RS232:RS485:

B A B A

Modbus Configuration

Fig. 11 MultiCom CCC interface as a Modbus interface (top view)

Connections:

X1: Internal inverter bus and power supply

X2: Potential-free RS232 serial interface

X3: Triggering of "remote signalling"

X4: A remote panel can be connected to this potential-free CAN

interface.

X5: Potential-free RS485/RS232 serial interface

Configuration jumpers:

J1: 1-2: firmware update; 2-3: (default)

J4: All closed: RS485 (default)

J5: All closed: RS232

The transmission topology of the Modbus interface (connector X5)

is set with the two configuration jumper blocks (J4/J5). The factory

setting is RS485.

In order to be able to use the Modbus interface as a point-to-point

connection via RS232, you must remove all jumpers from block J4

and plug them in on block J5.

Button:

S1: Button for initiating the configuration via connector X2