Alpha ESS Storion-SMILE5 Installation, Operation & Maintenance Manual page 53

If external device will dispatch the system, please set as following steps:
Step 1: Please go to the function menu, choose
"ModBus" and press enter.
If you use cascading function please set as following steps:
Step 1: Please go to the function menu, choose
"Parallel" and press enter.
Step 3: Please choose "Phase" as L1 (master)
and press enter.
Step 5: please repeat Step 1 to 4 to set the other device as L2 (slave) L3 (slave).
___________________________________________________________________
EMS Introduction and Set up
L1＞L2＞L3
Step 2: Please set Modbus enable as yes.
Step 2: Please choose "Select" as "Yes" and
press enter.
Step 4: Please choose "Mode" as "Parallel
mode" and press enter.
Alpha ESS Co., Ltd.
Your Smart Energy
Page 51