SMA STP 15000TL-30 - Configuring Modbus Function

☐ The active power feed-in specified by the grid operator must be known.
Procedure:
1. Ensure that the firmware version of the inverter is at least 2.81.07.R. If necessary, carry out a
firmware update.
2. Select the parameter Fallback act power lmt P in % of WMax for absent act power lmt
and set the required percentage.
3. Select the parameter Operating mode for absent plant control and set to Use fallback
setting.
8.5 Configuring the ModbusFunction
The Modbus interface is deactivated by default and the communication ports 502 set. In order to
access SMA invertes with SMA Modbus
®
or SunSpec
®
Modbus
®
, the Modbus interface must be
activated. After activating the interface, the communication ports of both IP protocols can be
changed.
For information on commissioning and configuration of the Modbus interface, see the Technical
Information "SMAModbus® Interface" or in the Technical Information "SunSpec® Modbus®
Interface" at www.SMA-Solar.com.
Data security during activated Modbus interface
If you activate the Modbus interface, there is a risk that unauthorized users may access and
manipulate the data or devices in your PV system.
• Take appropriate protective measures such as:
– Set up a firewall.
– Close unnecessary network ports.
– Only enable remote access via VPN tunnel.
– Do not set up port forwarding at the communication port in use.
– In order to deactivate the Modbus interface, reset the inverter to default settings.
Procedure:
• Activate the Modbus interface and adjust the communication ports if necessary (see the
Technical Information "SMAModbus® Interface" or "SunSpec® Modbus® Interface" at
www.SMA-Solar.com).
8.6 Reducing the Attenuation of Ripple Control Signals
By setting certain parameters, the attenuation of three-phase parallel ripple control frequencies
ranging from 1,000Hz to 1,100Hz can be avoided. The parameters must only be set in
consultation with the responsible grid operator.
The basic procedure for changing operating parameters is explained in another section (see
Section8.3 "Changing Operating Parameters", page36).
Requirement:
☐ The firmware version of the inverter must be at least 2.81.07.R.
8 Configuration
SMA Solar Technology AG
Operating Manual 37STP15-25TL-30-BE-en-13