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11
NISE 50-J1900 User Manual
Chapter 2: Jumpers and Connectors
COM3 RX Terminal Pin Header
Connector type: 1x3 3-pin header, 2.0mm pitch
Connector location: JP7
Pin
Definition
1
RX+_DATA+
2
RX-_DATA-
3
GND
1
3
COM3 RS422/485 Select
Connector type: 1x3 3-pin header, 2.0mm pitch
Connector location: JP9
Pin
Settings
1-2 On
RS422
2-3 On
RS485
2-3 On: default
Pin
Definition
1
VCC5
2
RS485_OE
3
RS485_OE_RTS
1
3