Terminal Resistor Off; Choosing The Communication Type - Furuno FMD3100 Installation Manual

2. WIRING

(Terminal resistor OFF)

• When setting the terminal other than starting/ending for the multipoint (CH1 to 4).
• When setting the terminal other than starting/ending for Modbus (CH1/CH2)
Jumper block J14
1-2
2-3
1-2
2-3
Jumper block J15
1-2
2-3
1-2
2-3
Jumper block J16
1-2
2-3
1-2
2-3
Jumper block J17
1-2
2-3
1-2
2-3

Choosing the communication type

Set the jumper blocks J20 and J21 to choose the communication type (IEC-61162-1/
2 or MODBUS) of the connector J4 (CH1).
The setting of the jumper block JP20 and JP21 must be identical.
Jumper block J20/J21
1-2
2-3
1-2
2-3
The jumper blocks J22 and J23 are used to set the communication type of the con-
nector J5 (CH2).
Jumper block J22/J23
1-2
2-3
1-2
2-3
2-18
SHORT Termination resistor: ON (default setting)
OPEN
OPEN Termination resistor: OFF
SHORT
SHORT Termination resistor: ON (default setting)
OPEN
OPEN Termination resistor: OFF
SHORT
SHORT Termination resistor: ON (default setting)
OPEN
OPEN Termination resistor: OFF
SHORT
SHORT Termination resistor: ON (default setting)
OPEN
OPEN Termination resistor: OFF
SHORT
OPEN IEC-61162-1/2 (default setting)
SHORT
SHORT MODBUS (The setting of J14 is different depending on the
unit position (starting/ending terminal).)
OPEN
OPEN
SHORT
SHORT
OPEN
Connector J4 (CH1)
Connector J5 (CH2)
Connector J6 (CH3)
Connector J7 (CH4)
Communication type of J4
(between RD1 and TD1)
Communication type of J5
(between RD2 and TD2)
IEC-61162-1/2 (default setting)
MODBUS (The setting of J14 is different depending
on the unit position (starting/ending terminal).)