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2 Safety
2 Safety
2.1
Intended Use
The Modbus interface of the SMA products is designed for industrial use and has the following tasks:
• Remote control of grid management services
• Remote-controlled querying of measured values
• Remote-controlled changing of parameters
• Interface for direct marketing
The Modbus interface can only be used via the Modbus TCP protocol.
All components must remain within their permitted operating ranges and their installation requirements at all times.
Use SMA products only in accordance with the information provided in the enclosed documentation and with the
locally applicable laws, regulations, standards and directives. Any other application may cause personal injury or
property damage.
Alterations to the SMA products, 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 appropriate.
The enclosed documentation is an integral part of this product. Keep the documentation in a convenient, dry place for
future reference and observe all instructions contained therein.
This document does not replace any regional, state, provincial, federal or national laws, regulations or standards that
apply to the installation, electrical safety and use of the product. SMA Solar Technology AG assumes no responsibility
for the compliance or non-compliance with such laws or codes in connection with the installation of the product.
2.2
IMPORTANT SAFETY INSTRUCTIONS
Keep the manual for future reference.
This section contains safety information that must be observed at all times when working.
The product has been designed and tested in accordance with international safety requirements. As with all electrical
or electronical devices, some residual risks remain despite careful construction. 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. These parameters are marked with
Values").
Parameters for grid management services to control and limit the nominal PV system power are an exception. Such
parameters can be changed cyclically. These parameters are marked with
"Parameters and Measured Values").
• Do not change device parameters cyclically.
• Use the parameters for grid management services for the automated remote control.
• Note the explanation of the symbols (see Technical Information "Parameters and Measured Values").
6
SMAModbus-ennexOS-TI-en-10
NOTICE
(see Technical Information "Parameters and Measured
SMA Solar Technology AG
(see Technical Information
Technical Information
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