5 Installation
5.3 Interfaces
28
MICRO PANEL XV-152
12/2011 MN04802006Z-EN
www.eaton.com
5.3.4
RS232 (System Port)
The RS232 interface is
not
electrically isolated. The GND pin is directly connected to the housing
potential.
Tab. 9 Pin assignment of the RS232 interface
Wiring
Shielded cables must be used.
The maximum baud rate depends on the cable length:
Tab. 10 Relationship of cable length / baud rate
CAUTION
Non-isolated interfaces
The device may be damaged due to potential differences.
The GND terminals of all bus stations must be connected.
Fig. 9 RS232 interface (9-pin, D-Sub, male, UNC)
Pin
Signal
Assignment
1
DCD
Data Carrier Detected
2
RxD
Receive Data
3
TxD
Transmit Data
4
DTR
Data Terminal Ready
5
GND
Ground
6
DSR
Data Set Ready
7
RTS
Request to Send
8
CTS
Clear to Send
9
RI
Ring Indicator
1 2 3 4 5
6 7 8 9
Cable length
Max. baud rate
2.5 m
115200 Bit/s
5 m
57600 Bit/s
10 m
38400 Bit/s
15 m
19200 Bit/s
30 m
9600 Bit/s
