Battery Communications; Connecting Multiple Batteries In Parallel; Communication Cable Pinout And Dip Switch Id Tables - EG4 -LL-S User Manual

5.3 Battery Communications

Each EG4® battery is designed with you in mind, displaying as much
information as possible in the simplest manner. EG4® Electronics
includes the option of connecting the battery to PC software to monitor
the module status. This allows you to see and understand exactly what
the battery is doing as well as troubleshoot if problems arise.
When a single battery is used, it will communicate directly with the
system via the RS485 or CAN port. The battery will connect via a
properly pinned battery communications cable (not included).
The communication cable from battery to battery is a standard Cat5
cable. If you need a longer cable to reach from your system to your
master battery and would like to create your own, please refer to the
Communication Cable Pinout Table in

5.3.1 Connecting multiple batteries in parallel

1. Ensure all battery breakers and BMS are OFF.
2. Set the address code of each battery according to the DIP
Switch ID Table (see
sure there are no duplicate addresses.
3. Establish communication between the batteries via the
"Battery-Comm" ports starting with the right port on the last
battery address and terminating on the left port of the host.
4. The battery with DIP Switch ID 1 (referred to as the host)
connects to the system via communication cable using the
RS485 or CAN port. (See image to the right)
5. Power on each battery breaker and BMS ON/OFF switch one at
a time beginning with the host battery.
5.3.2 Communication Cable Pinout and DIP Switch ID
Tables
EG4®-LL batteries interface with an inverter by designating a "Host"
battery (DIP switch ID No. 1). The ID code range is 1‒64 (1 –16 for the 4
DIP model), and the communication mode can support up to 64
modules in parallel (16 with the 4 DIP model).
Remember
If you have multiple batteries, all DIP switch settings must be
different from each other. This allows all equipment to see each
battery in the bank separately.
Section 5.3.2
Section 5.3.2: DIP Switch ID
13
Table), making