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 23 of 45
Denmark
USB programming port
The mini-USB port is for programming and communicating with the RTCU IDE (or other RACP
compliant applications). A standard USB cable can be used between the device and the PC.
RS232 communication ports (EIA/TIA-232 and V.28/V.24 compatible)
Two general purpose RS232 ports available on the RTCU NX-910 device. Both are compliant with
the EIA/TIA-232 standard.
RS232 port 1
This port is a general-purpose RS232 serial port and does not support handshaking.
The signals are available on the angled front row terminals.
SER1 terminals
Terminal Name
Description
SER1_TXD
Transmit data from serial port 1, RS232-compatible.
SER1_RXD
Receive data for serial port 1, RS232-compatible.
SGND
Signal ground.
RS232 port 2
Serial port 2 is a general-purpose RS232 port with RTS/CTS handshaking signals present.
The signals are available on the angled back row terminals.
SER2 terminals
Terminal Name
Description
SER2_TXD
Transmit data from serial port 2, RS232-compatible.
SER2_RXD
Receive data for serial port 2, RS232-compatible.
SER2_CTS
Clear-To-Send.
SER2_RTS
Request-To-Send.
SGND
Signal ground.