Rj 45 Interface - Eaton PowerXL DA1 Communications Manual

2.3 RJ 45 interface

The master and slave communicate with each other via RJ45 cables.
If multiple slaves are being used, they need to be connected in parallel using
RJ45 cables and splitters.
The integrated RJ45 port (COM port) in DA1 and DC1 variable frequency
drives and DE1 variable speed starters supports the Modbus RTU protocol,
allowing for a direct network connection without the need for an additional
interface module.
A bus termination resistor with a resistance of 120 Ω needs to be connected
at each physical end (last node) of the network cable in order to prevent
signal reflection and the associated transmission errors.
EASY-NT-R resistors can be plugged into the corresponding splitter.
PIN
1
1
2 2
3
4
5
6
3
7
8
4
5
6
7
8
Figure 3: RJ45 socket wiring
Modbus RTU for variable frequency drive DA1, DC1, DE1 09/16 MN040018EN www.eaton.com
Significance
CAN-
Note:
Not used in DE1 variable speed starters (with the exception of DE11).
CAN+
Note:
Not used in DE1 variable speed starters (with the exception of DE11).
0 V
OP bus (operation bus) / External keypad / PC connection -
OP bus (operation bus) / External keypad / PC connection +
24 V DC power supply
RS485- Modbus RTU
RS485+ Modbus RTU
2 Modbus RTU
2.3 RJ 45 interface
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