3 Product Overview
SMA Solar Technology AG
Technical Information 11SMAModbus-ennexOS-TI-en-10
Format Explanation
Outline Purchase Agreement Revision number of the form 2.3.4.5.
TEMP Temperature values are stored in special Modbus registers in degrees Celsius
(°C), in degrees Fahrenheit (°F), or in Kelvin K. The values are commercially
rounded, with one decimal place.
TM UTC time, in seconds
UTF8 Data in UTF8 format.
DT Date/time (Transmission in seconds since 1970-01-01)
3.4.7 SMA Firmware Data Formats
Four values are extracted from the delivered double word (DWORD) within the corresponding Modbus register. The
values "Major" and "Minor" are contained BCD-coded in bytes 1 and 2. Byte 3 contains the "Build" value (not BCD-
coded). Byte 4 contains the "Release Type" value according to the following table:
Release type Release-type coding Explanation
0 N No revision number
1 E Experimental release
2 A Alpha release
3 B Beta release
4 R Release
5 S Special release
> 5 As number No special interpretation
Example:
Product firmware version: 1.05.10.R
Values from double word (DWORD): Major: 1, Minor: 05, Build: 10, Release type: 4 (Hex: 0x1 0x5 0xA
0x4)
3.5 Modbus Ports
The following table shows the default setting of the supported network protocols:
Network protocol Modbus port
TCP 502
Using free ports
Only use free ports when using another port than 502. The following range is generally available: 49152 to
65535.
You can find more information on occupied ports in the database "Service Name and Transport Protocol Port
Number Registry" at http://www.iana.org/assignments/service-names-port-numbers/service-names-port-
numbers.xml.
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