Step 3 - Set The Communication Switches - Tesla Powerwall Installation Manual

Step-by-Step Installation Instructions

STEP 3 - SET THE COMMUNICATION SWITCHES

Communication switches are located on the lower right side of the board.
1. Refer to the inverter manual to determine:
• Whether to use CAN or Modbus communication
• Whether bias is required (if the system is using Modbus)
2. Set the CAN-Modbus switch:
Inverter
SMA
SolarEdge
3. Set the termination switch based on whether the installation is one unit or multiple units, and
whether the system requires Modbus bias, per the table below.
Inverter and Unit Position
SMA
SolarEdge, multi-unit other than the
last
SolarEdge, single or last unit
10
Protocol
CAN
Modbus (RS485)
Termination
Termination, NO Modbus bias
No termination
Termination WITH Modbus bias
Switch Position
Left
Right
Switch Position
Top
Middle
Bottom
Powerwall Installation Manual