Rs485 Communication Board Connections; 8000038781_00_Bal_En / L00410564-01_02 - AEG Protect PV Installation Manual

5.1.4. RS485 Communication Board Connections

Illustration 5.7: RS485 Detail of Communication Board.
BIAS L and Bias H are to be connected to RX/TX B and RX/TX A respectively for termination of
RS485 bus.
Table 5.10: RJ45 Pinout Detail
Note:
The RS485 communication bus must be terminated at both cable ends.
Note:
The two network types cannot be mixed. The inverters can only be connected in networks
which are either solely RS485 or solely Ethernet.
Note:
Each inverter has a unique RS485 address when it is delivered. This address is defined at the
time of production.
Note:
Ethernet connection is recommended for faster communication.
RS485 connection is required when a web logger or data logger is connected to the inverter.
Pinout RS-485
1. GND
2. GND
3. RX/TX A (-)
4. BIAS L
5. BIAS H
6. RX/TX B (+)
7. Not connected
8. Not connected
Bold = Compulsory, Cat5 cable contains all 8 wires
For Ethernet: 10Base-TX and 100Base-TX auto cross over

8000038781_00_BAL_en / L00410564-01_02

5. Technical Data
Pinout Ethernet only, via the
RJ45 connector
1. RX+
2. RX
3. TX+
4.
5.
6. TX-
7.
8.
5
31