How To Set Jumper Blocks In The Sensor Adapters; Mc-Din Board (24P0116); Mc-Out Board (24P0117) - Furuno FMD3100 Installation Manual

2.2.7

How to set jumper blocks in the sensor adapters

MC-3020D/3030D
This paragraph shows how to set the MC-DIN Board (24P0116, for MC-3020D) and
MC-DOUT Board (24P0117, for MC-3030D).
Setting MODBUS addresses: Use the rotary switch (U18) to set the MODBUS
address with a digit of number from "0". When multiple sensor adapters are connected
to the MC-3000S, the same number cannot be used among them. (It is allowed to use
the same number between the MC-3000S and a sensor adapter.)

MC-DIN Board (24P0116)

Setting termination resistors on the Jumper block
Use the jumper block J25 to set the termination resistor on/off for the MODBUS
communication on the connector J1. For the first and last sensor adapter in a series,
their termination resistors should be set to ON. If not, communication between sensor
adapters is not possible.
Jumper block J25
1-2
2-3
1-2
2-3
J25
OPEN Termination resistor: OFF (default setting)
SHORT
SHORT Termination resistor: ON
OPEN
U18

MC-OUT Board (24P0117)

Connector J1
2. WIRING
J25
U18
2-25