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Furuno IF-8540 Installation Instructions Manual page 5

Junction box

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10. Reattach the sensor adapter cover.
11. Insert the fixing plate to the original location, then fasten two binding screws loosened at step 3.
12. Fix the internal wiring cable released at step 2 with the wire saddle.
13. Check the checkmark(s) on the label on the rear side of the junction box cover, according to the additional
unit(s).
The label on the rear side of the junction box cover
14. Reattach the junction box cover.
Setting the Termination Resistor and Modbus Address
Setting the Termination Resistor and Modbus Address
5 - 2
5 - 2
When an additional sensor adapter(s) is installed, set the termination resistor and Modbus address.
• Termination resistor: Use the jumper block J25 to set the termination resistor ON/OFF. For the first and last sensor adapter
in a series, short between 1 and 2 pin to set the termination resisitor ON. For other sensor adaper, short between 2 and 3 pin
of to set the termination resisitor OFF.
• Modbus address: Use the rotary switch U18 to set the Modbus address number.
MC-DIN board (24P0116, MC-3010A-N)
D
C
B
A
J25
Front
When additional unit is installed at the location "E" only ( "F" is not used)
Location
E
D
E
F
When additional unit is installed at both location "E" and "F"
Location
D
E
F
U18
MC-ANLG board (24P0115, MC-3010A-N)
Terminal resistor (J25)
Short between 2 and 3 pin (termination resistor: OFF).
Short between 1 and 2 pin (termination resistor: ON).
Terminal resistor (J25)
Short between 2 and 3 pin (termination resistor: OFF).
Short between 2 and 3 pin (termination resistor: OFF).
Short between 1 and 2 pin (termination resistor: ON).
5
Check the checkmark(s)
according to the additional unit(s).
J25
Keep the default setting.
Keep the default setting.
U18
Modbus address (U18)
"Set to "4" .
Modbus address (U18)
Set to "4" .
Set to "5" .

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