Serial Interfaces Rs232/Rs422/Rs485 - Eaton XP-504-10-A10-A01-2B Manual

4. Using peripheral devices - External connections

4.6 Serial interfaces RS232/RS422/RS485

4.6 Serial interfaces RS232/RS422/RS485
80
Available on: Panel-PC and Box-PC
This port on the PCs can be used to connect serial devices.
The RS port has various modes, with the mode being set in the BIOS.
CAUTION
NON-GALVANICALLY-ISOLATED INTERFACES
The device may be damaged by potential differences.
The GND terminals of all bus modules must be connected.
The device must be de-energized before connecting or dis-
connecting any connections to it.
1 2 3 4 5
6 7 8 9
Fig. 38: Pin assignment RS232/RS422/RS485
Tab. 14: Pin assignment (RS232 mode)
PIN Signal Meaning
1 DCD Data Carrier Detect
2 RXD Receive Data
3 TXD Transmit Data
4 DTR Data Terminal Ready
5 GND Signal Ground
Tab. 15: Pin assignment (RS422 mode)
PIN signal PIN
1 RS422 TX- 6
2 RS422 TX+ 7
3 RS422 RX+ 8
4 RS422 RX- 9
5 GND
Tab. 16: Pin assignment (RS485 mode)
PIN signal PIN
1 RS485 Data+ 6
2 7
RS485 Data-
3 n.c. 8
4 9
n.c.
5 GND
XP-504 04/2022 MN048028EN Eaton.com
PIN signal
6 DSR
7 RTS
8 CTS
9 RI
signal
n.c.
The BIOS will need to be
n.c.
set to RS422 mode.
n.c.
n.c.
signal
n.c.
The BIOS will need to be
n.c.
set to RS485 mode.
n.c.
n.c.
Meaning
Data Set Ready
Request to Send
Clear To Send
Ring Indicator