Sol-Ark Integration Guide

4 CAN2_H
5 CAN2_L
6 GROUND
7 RS485_A1
8 RS485_B1
Appendix 2 - Protocol Reference
UPS - CAN
Protocol ID Protocol Name Notes
1 Fortress/SolArk MODBUS Primary SolArk closed loop
2 SMA CANBUS SMA SunnyIsland
3 Victron CANBUS
6 SolArk CAN
UPS - Modbus
Protocol ID Protocol Name Notes
1 Fortress/SolArk MODBUS Primary SolArk closed loop
2 Schneider MODBUS
3 Reserved
eFlex 5.4 Open Loop Settings
This article shows how to program the inverter in open-loop communication mode.
Note: tech-support team strongly urges customers to use Fortress Power batteries in Closed-loop communication mode.
Yet, if certain circumstances require one to temporarily use the batteries in open-loop communication mode, please follow
the instructions below.
1. To program the inverter using the Sol-Ark inverter screen, go to battery setup menu:
2. Program the 'Batt' tab first. Enter the settings as shown below and tap on 'OK' in the bottom of the menu afterwards: