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2. WIRING
2-18
2.4.3
How to set jumper blocks on I/O Board
How to set the termination resistors
Use the jumper blocks JP1 and JP2 on the I/O Board (24P0124) to set the termination
resistor J3 and J4 on or off. The default setting is termination resistor: on.
• When setting the starting/ending terminal for the multipoint connection, or multipoint
is not connected (CH1 or CH2): termination resistor ON
• When not setting the starting/ending terminal for the multipoint connection (CH1 or
CH2): termination resistor OFF
Processor unit, I/O Board (24P0124)
Jumper block J1
Connector J3
1-2
SHORT
Termination resistor: ON (default setting)
2-3
OPEN
1-2
OPEN
Termination connector: OFF
2-3
SHORT
Jumper block J2
Connector J4
1-2
SHORT
Termination resistor: ON (default setting)
2-3
OPEN
1-2
OPEN
Termination connector: OFF
2-3
SHORT
J4
J11
JP1
J3
JP2
Not used.
Содержание FCR-2139S-BB
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