Furuno VR-7000 Installation Manual page 62

2. WIRING
2.8.5 MC-3010A/3020D jumper setting
This section shows how to set the MC-ANLG Board (24P0115, for MC-3010A) and
MC-DIN Board (24P0116, for MC-3020D).
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 num-
ber cannot be used among them. (It is allowed to use the same number between the
MC-3000S and a sensor adapter.)
J3
J4
J5
MC-ANLG Board (24P0115)
Setting termination resistors
Use the jumper block J25 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. If not, communication between sensor
adapters is not possible.
Jumper block J25
1-2
2-3
1-2
2-3
2-32
J25
OPEN Termination resistor: ON
SHORT
SHORT Termination resistor: OFF (default setting)
OPEN
U18
MC-DIN Board (24P0116)
Connector J1
J25
U18