SMA SUNNY TRIPOWER 60 Manual

Technical Information
SUNNY TRIPOWER 60
SunSpec®Modbus®Interface
STP60-SunSpec_Modbus-TI-en-12 | Version 1.2 ENGLISH

Legal Provisions SMA Solar Technology AG
Legal Provisions
The information contained in these documents is property of SMA Solar Technology AG.
Any publication, whether in whole or in part, requires prior written approval by
SMA Solar Technology AG. Internal reproduction used solely for the purpose of product evaluation
or other proper use is allowed and does not require prior approval.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not
mean that a product or brand is not a registered trademark.
SunSpec®is a registered trademark of SunSpec Alliance, Inc.
Modbus®is a registered trademark of Schneider Electric and is licensed by the Modbus
Organization, Inc.
SMA SOLAR TECHNOLOGY AG
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Tel. [phone]
Fax [phone]
www.SMA.de
E-mail: [e-mail]
© 2015 SMA Solar Technology AG. All rights reserved.
2 STP60-SunSpec_Modbus-TI-en-12 Technical Information

SMA Solar Technology AG Table of Contents
Table of Contents
1Information on this Document.................................................................5
2Security .......................................................................................................7
2.1 Intended Use ...............................................................................................................7
2.2 Skills of Qualified Persons .........................................................................................7
2.3 Information on Data Security ....................................................................................7
2.4 Supported SMA Devices...........................................................................................8
3Product Description...................................................................................9
3.1 Modbus Protocol ........................................................................................................9
3.2 SunSpec Modbus Profile for SMA Devices ............................................................9
3.3 PV System Topology...................................................................................................9
3.4 Addressing and Data Transmission in the Modbus Protocol............................. 11
3.4.1 Unit IDs .................................................................................................................11
3.4.2 Assignment of the SunSpec Modbus Registers to Unit IDs ...............................11
3.4.3 Modbus Register Number, Register Width and Data Block.............................11
3.4.4 Data transmission.................................................................................................12
3.5 Reading and Writing of Data ................................................................................12
3.6 SunSpec Data Types and NaN Values ...............................................................13
4Commissioning and Configuration .......................................................14
5STP60 SunSpec Modbus Profile – Assignment Tables.......................15
5.1 Information on the Assignment Tables..................................................................15
5.2 Gateway (Unit ID = 125) ......................................................................................17
5.2.1 Table C 001 (Common Model) .........................................................................17
5.2.2 Table NC011 (Ethernet Link Layer Model)........................................................18
5.2.3 Table NC 012 (IPv4 Model) ..............................................................................18
5.2.4 Tables I 101, 102, 103 (Inverter Integer Map)................................................20
5.2.5 Table IC 120 (Inverter Controls Nameplate Ratings) .......................................23
5.2.6 Table IC 121 (Inverter Controls Basic Settings) ................................................25
5.2.7 Table IC 122 (Inverter Controls Extended Measurements)..............................28
5.2.8 Table IC 123 (Immediate Inverter Controls)......................................................30
5.2.9 Table IC 124 (Basic Storage Controls)..............................................................32
5.2.10 Table IC 126 (Static Volt-VAR Arrays) ...............................................................32
5.2.11 Table IC 127 (Parameterized Frequency-Watt)................................................33
5.2.12 Table IC 128 (Dynamic Reactive Current).........................................................33
5.2.13 Table IC 131 (Watt-Power Factor).....................................................................34
5.2.14 Table IC 132 (Volt watt) .....................................................................................34
Technical Information STP60-SunSpec_Modbus-TI-en-12 3

Table of Contents SMA Solar Technology AG
5.2.15 Table I 160 (Multiple MPPT Inverter Extension)................................................35
5.2.16 Table IC 129 (LVRT Must Disconnect) ...............................................................35
5.2.17 Table IC 130 (HVRT Must Disconnect) ..............................................................36
5.2.18 Table E 307 (Base Meteorological Model) ......................................................36
5.2.19 Table E 308 (Mini Met Model)..........................................................................37
5.3 SUNNY TRIPOWER 60 (Unit ID = 126 to 168)................................................38
5.3.1 Table C 001 (Common Model) .........................................................................38
5.3.2 Table NC011 (Ethernet Link Layer Model)........................................................39
5.3.3 Table NC 012 (IPv4 Model) ..............................................................................39
5.3.4 Tables I 101, 102, 103 (Inverter Integer Map)................................................40
5.4 Direct Marketer Interface (Unit ID = 200)...........................................................45
5.4.1 Table C 001 (Common Model) .........................................................................45
6Troubleshooting.......................................................................................47
7Technical Data .........................................................................................50
7.1 Modbus Communication Ports...............................................................................50
7.2 Data Processing and Time Behavior.....................................................................50
8Contact......................................................................................................51
9Index .........................................................................................................54
4 STP60-SunSpec_Modbus-TI-en-12 Technical Information

SMA Solar Technology AG Information on this Document
1Information on this Document
Validity
This document is valid for the device types listed in Section 2.4 "Supported SMA DevicesSupported
SMA ", page 8. It describes the general functioning of the Modbus interface as well as the Modbus
registers provided by the devices and the manufacturer-specific events and status for the SunSpec
Modbus profile of the supported device types. The basis of this figure is the file PICS.xls contained
in the version "SunSpec Specification from June 2013".
This document does not contain any details on the parameters and measured values provided by
the SUNNY TRIPOWER 60 in detail (for a description of the operating parameters, refer to the
Technical Information "SUNNY TRIPOWER 60").
This document does not contain any information on software which can communicate with the
Modbus interface (see the software manufacturer's manual).
Target Group
This document is intended for qualified persons. Only persons with appropriate skills are allowed to
perform the tasks described in this document (see Section 2.2 "Skills of Qualified Persons", P. 7).
Additional Information
SMA Documents
Additional information is available at www.SMA-Solar.com (not all documents are available in all
languages):
Document title
Document type
SUNNY TRIPOWER 60
Installation Manual
SUNNY TRIPOWER 60, Description of the Operating Parameters
Technical Information
SunSpec PlugFest Protocol Implementation Conformance Statement
for the STP60 (PICS.xlsx)
Specification
Additional Documents
Document title
Source
Modbus Application Protocol
Specification
http://www.modbus.org/specs.php
Modbus Messaging Implementation Guide
http://www.modbus.org/specs.php
SunSpec specifications
http://www.sunspec.org
Technical Information STP60-SunSpec_Modbus-TI-en-12 5

Information on this Document SMA Solar Technology AG
Symbols
Symbol
Explanation
Information that is important for a specific topic or goal, but is not safety-
relevant
Typographies
Typography
Application
Example
bold
•
File names
•
Parameters
•
The file PICS.xls
•
The column Typ
Nomenclature
Complete designation
Designation in this document
Modbus register
Register
PV system
PV system
SUNNY TRIPOWER 60 inverter
STP 60
SMA Inverter Manager
Inverter Manager
Abbreviations
Abbreviation
Designation
Explanation
LCS tool
Local Commissioning and
Service tool
Configuration software for the Inverter Man-
ager
PICS
Protocol Implementation Con-
formance Statement
SunSpec conforming summary of the data
points of a particular device.
6 STP60-SunSpec_Modbus-TI-en-12 Technical Information

SMA Solar Technology AG Security
2Security
2.1 Intended Use
The Modbus interface of the supported SMA devices 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.
The Modbus interface can be used via Modbus TCP.
The enclosed documentation is an integral part of this product.
•Read and observe the documentation.
•Keep the documentation in a convenient place for future reference.
2.2 Skills of Qualified Persons
The activities described in this document must only be performed by qualified persons. Qualified
persons must have the following skills:
•Knowledge of IP-based network protocols
•Knowledge of the Modbus specifications
•Knowledge of the SunSpec specifications
•Knowledge of and compliance with this document and all safety information
2.3 Information on Data Security
Data security in Ethernet networks
You can connect the supported SMA devices to the Internet. When connecting to the Inter-
net, there is a risk that unauthorized users can access and manipulate the data of your PV
system.
•Take appropriate protective measures, for example:
•Set up a firewall
•Close unnecessary network ports
•Only enable remote access via VPN tunnel
•Do not set up port forwarding at the Modbus port in use
Technical Information STP60-SunSpec_Modbus-TI-en-12 7

Security SMA Solar Technology AG
2.4 Supported SMA Devices
The following devices are supported:
•Inverters of the SUNNY TRIPOWER production series in the 60 kW power class (STP 60)
•SMA Inverter Manager
8 STP60-SunSpec_Modbus-TI-en-12 Technical Information

SMA Solar Technology AG Product Description
3Product Description
3.1 Modbus Protocol
The Modbus Application Protocol is an industrial communication protocol that is currently used in
the solar sector mainly for system communication in PV power plants.
The Modbus protocol has been developed for reading data from or writing data to clearly defined
data areas. The Modbus specification does not prescribe what data is within which data area. The
data areas must be defined device-specifically in Modbus profiles. With knowledge of the device-
specific Modbus profile, a Modbus client (e.g. a SCADA system) can access the data of a Modbus
server (e.g. SMA devices with Modbus interface).
The Modbus profile specially developed by SunSpec is the SunSpec Modbus profile.
The mapping of the data model of the SUNNY TRIPOWER 60 inverter on the SunSpec data model
is specified in the STP60 SunSpec Modbus profile.
3.2 SunSpec Modbus Profile for SMA Devices
The SunSpec Modbus profile from the SunSpec Alliance contains a comprehensive set of measured
values and parameters for energy-generating devices in PV systems. SMA has performed a map-
ping of the special data points of the STP60 on the data points required by SunSpec. The STP60
therefore conforms with the SunSpec Modbus profile of the underlying specification version (see
Section 1 "Information on this Document", P. 5).
The SunSpec Modbus profile for the STP60 starts at the register number 40001 (see Section 3.4
"Addressing and Data Transmission in the Modbus Protocol", page 11).
3.3 PV System Topology
The Inverter Manager is connected with the SCADA system of the electric utility company or the
grid operator and can thus communicate via the IP protocol. The IP interface also enables commu-
nication via the Modbus protocol. The SUNNY TRIPOWER 60 devices that are connected to the
Inverter Manager via an SMA fieldbus are subordinate to the Inverter Manager.
From the perspective of the Modbus protocol, the Inverter Manager represents a Modbus slave
that supports the SunSpec Modbus profile and provides a gateway to the STP60 devices. The
STP60 devices can only be addressed using this gateway per unit ID.
Technical Information STP60-SunSpec_Modbus-TI-en-12 9

Product Description SMA Solar Technology AG
Example: PV System Topology from the Perspective of the SMA Devices
Line
Explanation
IP network connection between SCADA system and Inverter Manager
(PV system router)
SMA fieldbus
Logical assignment of STP60 to unit ID
10 STP60-SunSpec_Modbus-TI-en-12 Technical Information

SMA Solar Technology AG Product Description
3.4 Addressing and Data Transmission in the Modbus Protocol
3.4.1 Unit IDs
The Unit ID is a superordinate addressing type in the Modbus protocol. The assignment of the unit
IDs in the SunSpec Modbus profile for SUNNY TRIPOWER 60 devices is performed automatically
by the Inverter Manager. You can determine the unit IDs assigned by the Inverter Manager for the
connected SUNNY TRIPOWER 60 devices using the Local Commissioning and Service tool (LCS
tool).
The following table shows an overview of the unit IDs in the STP60 SunSpec Modbus profile:
Unit ID
Explanation
125*
This unit ID is reserved for the Inverter Manager.
126 to 167*
The unit IDs from 126 to 167 are reserved for STP 60 devices.
*Deviation for firmware version < 1.45: Inverter Manager ID = 1; Inverter ID 2 to 43
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 Sun-
Spec 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.
3.4.3 Modbus Register Number, Register Width and Data Block
A Modbus register is 16 bits wide. For wider data items, connected Modbus registers are used and
considered as data blocks. The number (CNT) of connected Modbus registers is indicated in the
SunSpec assignment tables. The register number of the first Modbus register in a data block is the
start address of the data block. The register numbering begins with 40001.
Offset of the Modbus register numbers (No.)
For the reading or writing of Modbus registers, use the register numbers reduced by the
offset 1 in each case. Example: Modbus register address = register number in the STP60
SunSpec Modbus profile – offset = 40001 – 1 = 40000.
Technical Information STP60-SunSpec_Modbus-TI-en-12 11

Product Description SMA Solar Technology AG
3.4.4 Data transmission
In accordance with the Modbus specification, only a specific volume of data can be transported in
a single data transmission in a simple protocol data unit (PDU). The data also contains function-
dependent parameters such as the function code, start address or number of Modbus registers to
be transmitted. The amount of data depends on the Modbus command used and has to be taken
into account during data transmission. You can find the number of possible Modbus registers per
command in Section 3.5.
With data storage in the Motorola format "Big Endian", data transmission begins with the high byte
and then the low byte of the Modbus register.
3.5 Reading and Writing of Data
The Modbus interface can be used via the protocol Modbus TCP. Using Modbus TCP enables
read- and write access (RW) to the Modbus register.
The following Modbus commands are supported by the implemented Modbus interface:
Modbus command
Hexadecimal value
Data volume
(number of registers)1
Read Holding Registers
0x03
1 to 125
Read Input Registers
0x04
1 to 125
Write Single Register
0x06
1
Write Multiple Registers
0x10
1 to 123
Read Write Multiple Registers
0x17
Read: 1 to 125, Write: 1 to 121
1Number of Modbus registers transferable as data block per command
12 STP60-SunSpec_Modbus-TI-en-12 Technical Information

SMA Solar Technology AG Product Description
3.6 SunSpec Data Types and NaN Values
The following table shows the data types used in the STP60 SunSpec Modbus profile and the
possible NaN values. The SunSpec data types are listed in the Type column of the assignment
tables. They describe the data width and the format of the data value saved at a register address.
The format, such as bit field, describes how SunSpec data is to be interpreted. The formats are
important, for example, for the displaying of data or for its further processing:
Type
Description
NaN value
acc32
Accumulated value (32 bit). Is used for all sequentially increas-
ing values.
0x0000 0000
acc64
Accumulated value (64 bit). Is used for all sequentially increas-
ing values. Only positive values are permitted. The overflow of
the number range takes place at 0x7FFF FFFF FFFF FFFF.
0x0000 0000 0000
0000
bitfield16
Bit field (16 bit). A combination of individual bits. Is used for
multi-value alarm messages or status. Value range 0 to 0x7FFF.
If the MSB is set in a bit field, all other bits are ignored.
0xFFFF
bitfield32
Bit field (32 bit). A combination of individual bits. Is used for
multi-value alarm messages or status. Value range 0 to 0x7FFF
FFFF. If the MSB is set in a bit field, all other bits are ignored.
0xFFFF FFFF
enum16
Number code (16 bit). The breakdown of the possible codes
can be found directly under the designation of the Modbus
register in the SunSpec Modbus profile assignment tables.
0xFFFF
int16
Signed integer (16 bit).
0x8000
int32
Signed integer (32 bit).
0x8000 0000
string
String (multiple of 2 bytes). A zero-terminating value or a value
of fixed length.
0x0000 to nnnn
sunssf
SunSpec scale factor as signed integer (16 bit). Scale factors
are used as exponents of a power of ten. Negative scale fac-
tors push the decimal point to the left, positive scale factors to
the right.
0x8000
uint16
Unsigned integer (16 bit).
0xFFFF
uint32
Unsigned integer (32 bit).
0xFFFF FFFF
uint64
Unsigned integer (64 bit).
0xFFFF FFFF FFFF FFFF
Technical Information STP60-SunSpec_Modbus-TI-en-12 13

Commissioning and Configuration SMA Solar Technology AG
4Commissioning and Configuration
The Modbus TCP server of the Inverter Manager is enabled as default. The communication port in
the Inverter Manager is set to 502 and can not be changed.
The Modbus interface can be used if all SUNNY TRIPOWER 60 devices connected to the Inverter
Manager as well as the Inverter Manager itself have been commissioned (see STP60 installation
manual).
14 STP60-SunSpec_Modbus-TI-en-12 Technical Information

SMA Solar Technology AG STP60 SunSpec Modbus Profile – Assignment Tables
5STP60 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:
Information
Explanation
No. (DEC)
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).
Description/number
code(s)
[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><*10SunSpec 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,
{…} Parameter group
CNT (WORD)
Number of combined Modbus registers at this Modbus register number
(No.).
Type
Data type, e.g. uint32 = 32 bits without prefix (see Section 3.6, page
13).
Technical Information STP60-SunSpec_Modbus-TI-en-12 15

STP60 SunSpec Modbus Profile – Assignment Tables SMA Solar Technology AG
Access
Access type
RO: Read only
RW: Read and write
If an access type is not allowed, a Modbus exception is generated in
the event of access with an access type that is not allowed.
Offset of the Modbus register numbers (No.)
For the reading or writing of Modbus registers, use the register numbers reduced by the
offset 1 in each case. Example: Modbus register address = register number in the STP60
SunSpec Modbus profile – offset = 40001 – 1 = 40000.
Reactive power in the SunSpec Modbus profile
For all SunSpec Modbus registers of the Inverter Manager and of the STP60 in which a
reactive power is measured or specified, a positive reactive power is "lagging" and a nega-
tive reactive power is "leading" as per the IEC convention and generator reference-arrow
system.
This information is valid for the following SunSpec Modbus registers: 40354 and 40359.
16 STP60-SunSpec_Modbus-TI-en-12 Technical Information

SMA Solar Technology AG STP60 SunSpec Modbus Profile – Assignment Tables
5.2 Gateway (Unit ID = 125)
In the following tables you will find the SunSpec Modbus registers provided by the gateway
(Inverter Manager) that you can access under unit ID = 125. You can access the gateway via the
IP address of the Inverter Manager:
5.2.1 Table C 001 (Common Model)
No. (DEC)
Description/Number Code(s)
CNT (WORD) Type Access
Header:
40001
SunSpec ID (SID): 0x53756e53 = SunSpec Modbus Map
2
uint32
RO
40003
Model ID (ID): 1 = SunSpec Common Model
1
uint16
RO
40004
Number of the following Modbus registers in accordance with
the PICS table (L): 66 1 uint16 RO
Fixed block:
40005
Manufacturer (Mn): "SMA"
16
string
RO
40021
Model (Md): "SMA Inverter Manager"
16
string
RO
40037
Options (Opt): "Inverter Manager name"
8
string
RO
40045
Version (Vr): Version number of the installed firmware.
8
string
RO
40053
Serial number (SN) of the device that uses the Modbus unit ID
stored in the following register.
16 string RO
40069
Modbus unit ID of the device (DA):
125: Inverter Manager
1 uint16 RO
40070
Padding register (Pad): NAN
1
pad
RO
Technical Information STP60-SunSpec_Modbus-TI-en-12 17

STP60 SunSpec Modbus Profile – Assignment Tables SMA Solar Technology AG
5.2.2 Table NC011 (Ethernet Link Layer Model)
No. (DEC)
Description / Number code
CNT (WORD) Type Access
Header:
40071
Model ID (ID):
11 = SunSpec Ethernet Link Layer Model
1 uint16 RO
40072
Number of the following Modbus registers in accordance with
the PICS table (L): 13
1 uint16 RO
NC 011 block was included for reasons of compatibility and only contains NaN values in
the registers 40073 to 40085
5.2.3 Table NC 012 (IPv4 Model)
No. (DEC)
Description / Number code
CNT (WORD) Type Access
Header:
40086
Model ID (ID):
12 = SunSpec IPv4 Model 1 uint16 RO
40087
Number of the following Modbus registers in accordance
with the PICS table (L): 98 1 uint16 RO
Fixed Block:
40088
Interface Name (Name): NaN
4
string
RO
40092 Config Status (CfgSt): NaN 1 enum16 RO
40093
Change Status (ChgSt): NaN
1
bitfield16
RO
40094
Config Capability (Cap) : NaN
1
bitfield16
RO
40095
IPv4 Config (Cfg) : NaN
1
enum16
RO
18 STP60-SunSpec_Modbus-TI-en-12 Technical Information

SMA Solar Technology AG STP60 SunSpec Modbus Profile – Assignment Tables
40096
Control (Ctl) : NaN
1
enum16
RO
40097
IP address (Addr)
8
string
RO
40105
Network mask (Msk)
8
string
RO
40113
Gateway address (Gw)
8
string
RO
40121
DNS1: NaN
8
string
RO
40129
DNS2: NaN
8
string
RO
40137
NTP1: NaN
12
string
RO
40149
NTP2: NaN
12
string
RO
40161
Domain (DomNam) : NaN
12
string
RO
40173
Host Name (HostNam) : NaN
12
string
RO
40185
Pad: : NaN
1
pad
RO
NC 012 block was included for reasons of compatibility and only contains NaN values in
the registers 40088 to 40185
Technical Information STP60-SunSpec_Modbus-TI-en-12 19

STP60 SunSpec Modbus Profile – Assignment Tables SMA Solar Technology AG
5.2.4 Tables I 101, 102, 103 (Inverter Integer Map)
Accumulation of the values
The Inverter Manager can be considered as a virtual inverter that combines the individual
measured values of the inverters, where useful.
No. (DEC)
Description / Number code
CNT (WORD)
Type Access
Header:
40186
Model ID (ID):
103 = SunSpec Inverter Model (phsABC)
1 uint16 RO
40187
Number of the following Modbus registers in accordance
with the PICS table (L):
50
1 uint16 RO
Fixed block:
40188
AC current (A), in AA_SF (40192): sum of all inverters
1
uint16
RO
40189
Current, line conductor L1 (AphA), in AA_SF (40192) : sum of
all inverters 1 uint16 RO
40190
Current, line conductor L2 (AphB), in AA_SF (40192) : sum of
all inverters
1 uint16 RO
40191
Current, line conductor L3 (AphC), in AA_SF (40192) : sum of
all inverters
1 uint16 RO
40192
Scale factor current (A_SF): -1
1
sunssf
RO
40193
Voltage, line conductor L1 to L2 (PPVphAB), in VV_SF (40199)
: average value of all inverters 1 uint16 RO
40194 Voltage, line conductor L2 to L3 (PPVphBC), in V
V_SF
(40199)
: average value of all inverters 1 uint16 RO
40195
Voltage, line conductor L3 to L1 (PPVphCA), in VV_SF (40199)
: average value of all inverters 1 uint16 RO
40196
Voltage, line conductor L1 to N (PPVphA), in VV_SF (40199) :
average value of all inverters 1 uint16 RO
20 STP60-SunSpec_Modbus-TI-en-12 Technical Information