Furuno VR-7000S Installation Manual page 68

2. WIRING
2.8.2 MC-3000S jumper and MODBUS settings
Set the jumper blocks in the MC-CS Board (24P0114) referring to the tables that fol-
low.
J19 J20 J21
(J20/J21 are not used)
Setting termination resistors
Use the jumper block J19 to set the termination resistor on/off for the MODBUS com-
munication 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 set-
ting 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).
2-28
(J22/J23 are not used)
J22
J14
MC-CS Board (24P0114)
SHORT Termination resistor: ON (default setting)
OPEN
OPEN Termination resistor: OFF
SHORT
J23 J15 J16 J17
Connector J1
S2
(Not used)