SMA Solar Technology AG STP60 SunSpec Modbus Profile – Assignment Tables
5 STP60 SunSpec Modbus Profile – Assignment Tables
5.1 Information on the Assignment Tables
In the assignment tables you will find the SunSpec Modbus register numbers which can be ac-
cessed under the corresponding unit ID. The tables provide the following information and are
divided into the sections "Header" and "Fixed Block", in accordance with the PICS:
Decimal register number (see also Section 3.4.2 "Assignment of the
SunSpec Modbus Registers to Unit IDs
The assignment of the parameters and measured values of the SMA
devices to Modbus registers is achieved using assignment tables and is
also shown in this document (see Section 5 "STP60 SunSpec Modbus
Profile – Assignment Tables", page 15).
The assignment table "Gateway (Unit ID = 125)" contains the SunSpec
Modbus registers that are provided by the Inverter Manager.
The assignment table (Unit ID = 126 to 167) contains a summary of the
SunSpec Modbus registers supported by the STP60 as well as a brief
description of the register data.
Modbus Register Number, Register Width and Data Block", page 11
onwards).
[SunSpec description of the Modbus register][(SunSpec name of the
Modbus register)] {<, (SMA: SMA parameter designation)>}{<: Parame-
ter>}{<: Number code(s)/bit(s), designation(s)/codes>}
The following description s
cheme is also used in the table sections "Fixed
Block" and "Repeating Block":
• [SunSpec description of the Modbus register] [(SunSpec name of
the Modbus register)], <Unit><*10
SunSpec scale factor
(Register ad-
dress of the scale factor)>, <(SMA: SMA parameter designa-
tion>:<standard value>
For scale factors:
• [Description of the scale factor (SunSpec scale factor): (integer)]
Legend: […] Mandatory entry, <…> Optional entry,
Number of combined Modbus registers at this Modbus register number
Data type, e.g. uint32 = 32 bits without prefix (see Section 3.6, page
13).
Technical Information STP60-SunSpec_Modbus-TI-en-12 15
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