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2. WIRING
2-39
(Termination resistor ON)
• When setting the starting/ending terminal for the multipoint, or the multipoint is not
connected (CH1 to 4).
• When setting the starting/ending terminal for Modbus (CH1, CH2)
(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)
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.
The jumper blocks J22 and J23 are used to set the communication type of the con-
nector J5 (CH2).
Jumper block J14 Connector J4 (CH1)
1-2 SHORT Termination resistor: ON (default setting)
2-3 OPEN
1-2 OPEN Termination resistor: OFF
2-3 SHORT
Jumper block J15 Connector J5 (CH2)
1-2 SHORT Termination resistor: ON (default setting)
2-3 OPEN
1-2 OPEN Termination resistor: OFF
2-3 SHORT
Jumper block J16 Connector J6 (CH3)
1-2 SHORT Termination resistor: ON (default setting)
2-3 OPEN
1-2 OPEN Termination resistor: OFF
2-3 SHORT
Jumper block J17 Connector J7 (CH4)
1-2 SHORT Termination resistor: ON (default setting)
2-3 OPEN
1-2 OPEN Termination resistor: OFF
2-3 SHORT
Jumper block J20/J21
Communication type of J4
(between RD1 and TD1)
1-2 OPEN IEC-61162-1/2 (default setting)
2-3 SHORT
1-2 SHORT MODBUS (The setting of J14 is different depending on the
unit position (starting/ending terminal).)
2-3 OPEN
Jumper block J22/J23
Communication type of J5
(between RD2 and TD2)
1-2 OPEN IEC-61162-1/2 (default setting)
2-3 SHORT
1-2 SHORT MODBUS (The setting of J14 is different depending
on the unit position (starting/ending terminal).)
2-3 OPEN