RTCU NX-900 Technical Manual V1.02
Advanced M2M/IIoT Gateway
Logic IO ApS.
Ph: (+45) 7625 0210
Holmboes Allé 14
Fax: (+45) 7625 0211
8700 Horsens
Page 12 of 45
Denmark
Stacked terminal overview
Terminal Name
TOP row BOT row
Description
R1A
Contact set for relay output 1.
R1B
R2A
Contact set for relay output 2.
R2B
R3A
Contact set for relay output 3.
R3B
R4A
Contact set for relay output 4.
R4B
N.C
Not connected.
N.C
Not connected.
DCIN
DC power supply, positive (+) connection.
XGND
DC power ground, negative (-) connection.
DCOUT
12V / 500mA or 24V / 250mA DC output for external equipment.
GND
Signal ground.
DI1
Digital input 1 / S0 input 1.
DI2
Digital input 2 / S0 input 2.
DI3
Digital input 3 / S0 input 3.
DI4
Digital input 4 / S0 input 4.
DI5
Digital input 5 / Wakeup (
ignition
) input.
GND
Signal ground.
AI1
Analog input 1.
AI2
Analog input 2.
AGND
Analog ground.
Angled terminal front row overview
Terminal Name
Description
SER1_TXD
Transmit data from serial port 1, RS232 compatible.
SER1_RXD
Receive data for serial port 1, RS232 compatible.
DEV_DET
Reserved for accessories.
SGND
Signal ground.
1Wire
1-Wire bus.
1Wire-LED
1-Wire ID-Button LED output.
SGND
Signal ground.
RS485 non-inverting signal for RS485 port 2.
RS485_2-
RS485 inverting signal for RS485 port 2.