M2M Control CX660 Technical Manual V1.02
Advanced Automotive M2MI/IoT Gateway
Page 22 of 44
RS232 port 1
This port can be used as a general-purpose RS232 serial port and does not support handshaking.
This port can also be used for communication with the CX660 accessories.
X4: 6 pin SER1 connector overview.
Pin
Name
Description
1
TD
Transmit Data from serial port 1, RS232 compatible
4
RD
Receive Data for serial port 1, RS232 compatible
5
SGND
Signal Ground
RS232 port 2
The port is a general-purpose RS232 port with all control signals according to EIA-561 which
defines RS232 on a modular connector.
The signals are available on the RJ-45 connector located on the top side of the M2M CONTROL
CX660 device.
Connector SER2: RJ-45 connector overview, fully RS232 compatible
Pin
Name
Description
1
DSR
Data Set Ready
2
DCD
Data Carrier Detect
3
DTR
Data Terminal Ready
4
GND
Signal Ground
5
RD
Receive Data for serial port 2
6
TD
Transmit Data from serial port 2
7
CTS
Clear To Send
8
RTS
Request To Send