Robustel R1520 - 2.3 Interface Definition of 2 * 4 3.5 mm

Robustel R1520 User Guide
RT056_UG_R1520_v.1.0.3 Dec. 25, 2021 15/159
PIN
DI
DO
AI
Note
1
IN
--
Digital input positive
2
--
OUT
--
Digital output positive
3
--
--
AI
Analog input
4
IGND
--
--
Digital input negative
5
--
OGND
--
Digital output negative
6
--
--
AGND
Analog input signal
ground
2.3 Interface Definition of 2 * 4 3.5mm
PIN
RS232
RS485
Note
1
TXD
--
Router  Device
2
RTS
--
Router  Device
3
--
GND
RS485 signal ground
4
B
RS485 Data+ (B)
5
RXD
--
Router  Device
6
CTS
--
Router

Device
7
SGND
--
RS232 signal ground
8
--
A
RS485 Data+ (A)