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14
NEX 913C User Manual
Chapter 2: Jumpers and Connectors
Pin
Settings
1-3 On
RS485
(COM4_Pin1: RS485-
COM4_RXD: RS485+)
2-4 On
3-5 On
RS232
4-6 On
3-5 On, 4-6 On: default
COM4 RS232/RS485 Selection
Connector type: 2x3 6-pin header, 2.54mm pitch
Connector location: JP13
1-3 On
2-4 On
3-5 On
(Default)
4-6 On
(Default)
1
5
2
6
1
5
2
6
1
5
2
6
1
5
2
6
1
5
2
6
Pin
Settings
JP20: 5-6 On
COM3: RS485
(COM3_PIN8: RS485-
COM3_RXD: RS485+)
JP12: 1-3 On, 2-4 On
JP21: No Effect
COM3 RS485 Selection
Connector type: 2x3 6-pin header, 2.54mm pitch
Connector location: JP20, JP12 and JP21
5-6 On
1-3 On
2-4 On
1
5
2
6
1
5
2
6
