Pull High/Low Resistors For Rs-422/485 - Moxa Technologies NPort W2250A Series User Manual

NPort W2150A/W2250A Series

Pull High/Low Resistors for RS-422/485

You may need to set the pull high/low resistors when termination resistors are used for certain RS-422 or
RS-485 environments.
S2 (Serial 1)
S3 (Serial 2)
ON
OFF
*Default
S3 is for NPort W2250A only
ATTENTION
effective communication distance.
DIP 1
Pull high resistor Pull low resistor
-232 mode. Doing so will degrade the RS-232 signals and reduce the
2-4
DIP 2 DIP 3
Terminal resistor
*N/A
Getting Started
DIP 4
Reserved
–
–