Safety; Intended Use; Safety Information - SMA Modbus EDMM-US-10 Technical Information

2 Safety

2 Safety
2.1

Intended Use

The Modbus interface of the supported SMA products is designed for industrial use and has the
following tasks:
• Remote control of the grid management services of a PV system
• Remote-controlled querying of the measured values of a PV system
• Remote-controlled changing of the parameters of a PV system
• Interface for direct marketing
The Modbus interface can be used via the protocol Modbus TCP.
All components must remain within their permitted operating ranges and their installation
requirements at all times.
Use this product only in accordance with the information provided in the enclosed documentation
and with the locally applicable standards and directives. Any other application may cause
personal injury or property damage.
Alterations to the product, e.g. changes or modifications, are only permitted with the express written
permission of SMA Solar Technology AG. Unauthorized alterations will void guarantee and
warranty claims and in most cases terminate the operating license. SMA Solar Technology AG
shall not be held liable for any damage caused by such changes.
Any use of the product other than that described in the Intended Use section does not qualify as the
intended use.
The enclosed documentation is an integral part of this product. Keep the documentation in a
convenient place for future reference and observe all instructions contained therein.
2.2

Safety Information

This section contains safety information that must be observed at all times when working on or with
the product.
To prevent personal injury and property damage and to ensure long-term operation of the product,
read this section carefully and observe all safety information at all times.
Damage of SMA products due to cyclical changing of parameters
The parameters of SMA products that can be changed with writable Modbus registers (RW) are
intended for long-term storage of device settings. Cyclical changing of these parameters leads to
destruction of the flash memory of the SMA products.
Parameters for grid management services to control and limit the nominal PV system power are
an exception. Such parameters can be changed cyclically.
• Do not change device parameters cyclically.
• Use the parameters for grid management services for the automated remote control of the
PV system.
6 EDMM-10-Modbus-TI-en-11
NOTICE
SMA Solar Technology AG
Technical Information