Laurel-electronics Modbus Protocol For Series 2 Laureate Digital Pane Bedienungsanleitung PDF herunterladen (Seite 6)

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USB Board &

Basic Ethernet Board

No jumpers needed.

RS232 Board

e - Normal operation.

f - Slave display to RS232 from another meter.

g - Pull-up resistor on RTS line.

Note: Board is shipped with jumpers e and g installed

RS485-Modbus Board, Full Duplex Operation

b & e - Bias jumpers should be installed on 1 board.

a & d - Installed on last meter in long cable run.

RS485-Modbus Board, Half Duplex Operation

b & e - bias jumpers installed on 1 board.

c & f - installed for half duplex operation.

a - installed on last meter in line with long cable runs.

Note: Board is shipped with no jumpers installed.

Modbus

RJ45

RS485 Board, Full Duplex Operation

b & d - Installed on last meter in long cable run.

RS485 Board, Half Duplex Operation

a & c - Installed for half duplex operation.

d - Installed on last meter in line with long cable runs.

Note: Board is shipped with no jumpers installed.

Ethernet-to-RS485 Converter Board

& USB-to-RS485 Converter Board

Full Duplex Operation

No jumpers for short cable runs.

Add b & d for long cable runs.

Half Duplex Operation

a & c for short cable runs.

d - Installed on last meter in line with long cable runs.

3. CONNECTOR WIRING, SERIAL BOARD TO COMPUTER

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Laurel-electronics Modbus Protocol For Series 2 Laureate Digital Pane Bedienungsanleitung Seite 6