Eaton XV300 Series - COM2 RS-485 Interface

5. External connections
5.5 Serial interfaces for communication with PLCs or devices
5.5.2 COM2 RS-485
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.
SUB-D plug
9-pole
PIN Signal Description
1
n.c.
not assigned
2
n.c.
not assigned
3
B
Cable B
4
n.c.
not assigned
5
GND
Ground
6
5 V
Output for external bus termination
7
A
A cable
8
n.c.
not assigned
9
n.c.
not assigned

Plug housings
GND
Functional earthing
Table14:PinassignmentCOM2RS-485,notgalvanicallyisolated,SUB-Dplug9-pole,
UNCnutsforinterlocking
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.
5.5.2.1 Wiring
l Screened twisted-pair cables must be used.
Rated cable impedance
120 Ohm
Permissible impedance
108 … 132 Ohm
Max. cable length
1200 m
Possible baud rates
9600 Bit/s

19200 Bit/s

38400 Bit/s

57600 Bit/s

115200 Bit/s
Table15:SpecificationsforRS-485wiring
Whenpreparingconnections,ensurethatthecableshieldhasalow
impedanceconnectionwiththeconnectorhousing.
XV30012/15 MN048017 ENwww.eaton.eu
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