Serial Terminal; Rs232 Data Ports - Siemens SIMATIC NET Installation Manual

4.2

Serial Terminal

The RUGGEDCOM RMC30 is equipped with a seven-terminal Phoenix-style connector.
This connector can accommodate one RS232 connection, and one RS485/422
connection. The following is the pin-out for the serial terminal:
Figure 4.3
4.2.1

RS232 Data Ports

The serial terminal includes a single EIA/TIA RS232 compliant port, consisting of three
terminals: Transmit (Tx), Receive (Rx) and Common (COM).
Note
The RS232 port is intended for point-to-point applications only.
In adherence to the EIA/TIA guidelines for RS232 communications, the following is
recommended by Siemens:
•
•
•
The RS232 port can be wired to standard DB9 console port.
RUGGEDCOM RMC30
Installation Manual, 04/2021, C79000-G8976-1008-10
1
7
Serial Terminal Pin
Configuration
Always use shielded cabling to minimize the effects of ambient electrical noise
Although greater distances are possible, limit the cable length to 15 m (49 ft) or
less for more reliable communications
Use a baud rate of 120 kbps
Communication Ports
Pin Name Mode
1 Rx RS232
2 Tx RS232
3 COM
4 -Rx RS422
RS485
5 +Rx RS422
RS485
6 -Tx RS422
7 +Tx RS422
4.2 Serial Terminal
Description
Receive data
Transmit data
Shared common
Receive data-
Transmit/
Receive data-
Receive data+
Transmit/
Receive data+
Transmit data-
Transmit data+
17