Furuno ECDIS FMD-3100 Installation Manual page 42

2. WIRING
2.2.3 MC-3000S Jumper and MODBUS settings
Set the jumper blocks in the MC-CS Board (24P0114) referring to the tables that
follow.
J19 J20
(J20/J21 are not used)
Setting termination resistors on the Jumper block:
Use the jumper block J19 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. Use the MC-CS Board with the default
setting because it becomes the "first" adapter in a series.
Jumper block J19
1-2
2-3
1-2
2-3
Set the jumper blocks J14 through J17 to turn the termination resistors on connectors
J4 through J7 respectively.
(Termination resistor ON)
• When setting the starting/ending terminal for the multipoint, or the multipoint is not
connected (CH1 to 4).
2-18
(J22/J23 are not used)
J14
J21
MC-CS Board (24P0114)
SHORT Termination resistor: ON (default setting)
OPEN
OPEN Termination resistor: OFF
SHORT
J22 J23 J15 J16
Connector J1
J17
S2
(Not Used)