Com2; Wiring; Table 16: Pin Assignment Com2 Rs-485, Not Gal; Table 17: Specifications For Rs-485 Wiring - Eaton XV300 Manual

5. External connections
5.5 Serial interfaces for communication with PLCs or devices
5.5.2 COM2 RS-485

5.5.2.1 Wiring

62
The RS485- interface is not electrically isolated.
CAUTION
NON-GALVANICALLY-ISOLATED INTERFACES
The XV300 may be damaged by potential differences.
The GND terminals of all bus modules must be connected.
Do not connect the connector to the XV300 or disconnect it without
first de-energizing the system.
Table 16: Pin assignment COM2 RS-485, not galvanically isolated, SUB-D plug 9-pole, UNC nuts for interlocking
SUB-D plug
9 pole
5
9
4
8
3
7
2
6
1
n.c.: PIN 1, 2, 4, 8 and 9 must not be connected.
PIN 6 (5 V) must not be used as a power supply for external devices.
Screened twisted-pair cables must be used.
l
The maximal baud rate depends on the cable length
l

Table 17: Specifications for RS-485 wiring

Rated surge impedance
Permissible surge impedance
Max. cable length
Possible baud rates
When preparing connections, ensure that the cable shield has a low
impedance connection with the connector housing.
XV300 04/19 MN048017EN www.eaton.eu
PIN signal
n.c.
1
2 n.c.
B
3
4 n.c.
5 GND
6 5 V
7 A
8 n.c.
9 n.c.
Plug housings GND
120 Ohm
108 ... 132 Ohm
1200 m
9600 Bit/s
19200 Bit/s
38400 Bit/s
57600 Bit/s
115200 Bit/s
Meaning
not used
not used
Line B
not used
Ground
Output for external bus termination
A cable
not used
not used
Functional earthing