SMA Data Manager L - Configuring a System with Several Data Managers; Speedwire Encryption of the System Communication

8 Operation
SMA Solar Technology AG
Operating manual EDMM-10-BE-en-20 43
PV inverter:
• 101, 102, 103, 120, 121, 122, 123, 126, 127, 128, 129, 130, 131, 132, 160
Energy meters:
• 201, 202, 203, 204, 211, 212, 213, 214
8.6 Configuring a System with several DataManagers
Several DataManagers can be integrated in one system. There are three options for using the
DataManager:
• Stand-alone master
• Superordinate master
• Slave
In systems with master and slaves, all slaves must first be commissioned to add them when the
master is commissioned.
Stand-alone master
Select the option Stand-alone master (recommended) in the installation assistant if you use the
DataManager as a stand-alone device without other subordinate DataManagers for open-loop or
closed-loop control of your system.
Superordinate master
Select the option Superordinate master in the installation assistant if you use the DataManager
as a superordinate device without other subordinate DataManagers for open-loop or closed-loop
control of your system. With this option, the superordinate DataManager forwards the open-loop
or closed-loop control commands to the subordinate DataManager via Modbus. For this,
subordinate DataManagers must be integrated as Modbus devices into the system of the
superordinate DataManager. Meters at the grid-connection point must be connected to the
superordinate DataManager.
Slave
Select the option Slave in the installation assistant if you want to use the DataManager as
subordinate device. With this option, the subordinate DataManager receives the open-loop and
closed-loop control commands of a superordinate device. These commands are forwarded as
open-loop control commands to the connected devices. In systems with a superordinate
DataManager as master, all slaves must first be commissioned to be able to integrate them into the
system of the superordinate DataManager. To do this, select the operating mode Control and the
signal source Modbus for the subordinate DataManager.
8.7 Speedwire Encryption of the System Communication
Speedwire encryption is used to encrypt system communication between all compatible Speedwire
devices. In order to be able to use the Speedwire encryption in the system, all connected
Speedwire devices, apart from the SMA Energy Meter, must support the SMA Speedwire
Encrypted Communication function.