SMA DATA MANAGER L Manual

Technical Information
SMA Modbus® Interface
ennexOS
SMAModbus-ennexOS-TI-en-10 | Version 1.0ENGLISH

Legal Provisions SMA Solar Technology AG
Technical InformationSMAModbus-ennexOS-TI-en-102
Legal Provisions
The information contained in these documents is the property of SMA Solar Technology AG. No part of this document
may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, be it electronic,
mechanical, photographic, magnetic or otherwise, without the prior written permission of 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.
SMA Solar Technology AG makes no representations or warranties, express or implied, with respect to this
documentation or any of the equipment and/or software it may describe, including (with no limitation) any implied
warranties of utility, merchantability, or fitness for any particular purpose. All such representations or warranties are
expressly disclaimed. Neither SMA Solar Technology AG nor its distributors or dealers shall be liable for any indirect,
incidental, or consequential damages under any circumstances.
The exclusion of implied warranties may not apply in all cases under some statutes, and thus the above exclusion may
not apply.
Specifications are subject to change without notice. Every attempt has been made to make this document complete,
accurate and up-to-date. Readers are cautioned, however, that product improvements and field usage experience may
cause SMA Solar Technology AG to make changes to these specifications without advance notice or per contract
provisions. SMA Solar Technology AG shall not be responsible for any damages, including indirect, incidental or
consequential damages, caused by reliance on the material presented, including, but not limited to, omissions,
typographical errors, arithmetical errors or listing errors in the content material.
SMA Solar Technology AG reserves the right to modify the implementation of communication interfaces and protocols
at any time without notifying the user. It is the user’s responsibility to determine whether the downloaded content is up
to date and to comply with it. SMA Solar Technology AG shall not be held liable for any damage as well as any
assumption of consequential costs for customer systems by SMA Solar Technology AG that may result from the user’s
failure to do so.
Software licenses
You will find the software licenses for the installed software modules (open source) on the Internet at www.SMA-
Solar.com.
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.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Phone [phone]
Fax [phone]
www.SMA.de
E-mail: [email protected]
Status: 7/3/2023
Copyright © 2023 SMA Solar Technology AG. All rights reserved.

Table of Contents
SMA Solar Technology AG
Technical Information 3SMAModbus-ennexOS-TI-en-10
Table of Contents
1 Information on this Document..................................................................................................... 4
1.1 Validity.............................................................................................................................................................. 4
1.2 Target Group ................................................................................................................................................... 4
1.3 Content and Structure of this Document......................................................................................................... 4
1.4 Levels of warning messages............................................................................................................................ 4
1.5 Symbols in the Document................................................................................................................................ 5
1.6 Typographical Elements in the Document...................................................................................................... 5
1.7 Additional Information..................................................................................................................................... 5
2 Safety ............................................................................................................................................ 6
2.1 Intended Use.................................................................................................................................................... 6
2.2 IMPORTANT SAFETY INSTRUCTIONS ......................................................................................................... 6
3 Product Overview........................................................................................................................ 8
3.1 Modbus Protocol ............................................................................................................................................. 8
3.2 SMA Modbus Profile....................................................................................................................................... 8
3.3 System Topology ............................................................................................................................................. 8
3.4 Addressing and Data Transmission ................................................................................................................ 8
3.4.1 Unit IDs ............................................................................................................................................................ 8
3.4.2 Register Address, Register Width and Data Block........................................................................................ 8
3.4.3 Data Transmission ........................................................................................................................................... 8
3.4.4 Reading and Writing of Data......................................................................................................................... 9
3.4.5 SMA Data Types and NaN Values............................................................................................................... 10
3.4.6 SMA Data Formats ......................................................................................................................................... 10
3.4.7 SMA Firmware Data Formats......................................................................................................................... 11
3.5 Modbus Ports................................................................................................................................................... 11
3.6 Data Processing and Time Behavior............................................................................................................... 12
3.7 Number codes of time zones.......................................................................................................................... 13
3.8 Frequently Used Number Codes.................................................................................................................... 16
4 Configuration ............................................................................................................................... 19
5 Contact.......................................................................................................................................... 20

1 Information on this Document SMA Solar Technology AG
Technical InformationSMAModbus-ennexOS-TI-en-104
1 Information on this Document
1.1 Validity
This document is valid for:
• EDML-10 (SMADataManager L)
• EDMM-10 (SMADataManagerM)
• EDMM-US-10 (SMA Data Manager M)
• EDMM-10.A (SMA Data Manager M Lite)
1.2 Target Group
The tasks described in this document must only be performed by qualified persons. Qualified persons must have the
following skills:
• Detailed knowledge of the grid management services
• Knowledge of IP-based network protocols
• Knowledge of the Modbus specifications
• Training in the installation and configuration of IT systems
• Knowledge of and compliance with this document and all safety information
1.3 Content and Structure of this Document
This document does not contain any information on the Modbus registers provided by SMA products. Furthermore, no
information on the firmware version to be installed on the respective SMA product is included. Information on firmware
versions and device-specific Modbus registers of SMA products can be found on our product pages or Modbus page
at www.SMA-Solar.com.
This document does not contain any information on software which can communicate with the Modbus interface (see
the software manufacturer's manual).
This document contains a general description of the Modbus interface integrated in SMA products.
This document does not contain any information related to parameters for grid management services (system control
objects). For more information on these parameters, contact the SMA Service.
Illustrations in this document are reduced to the essential information and may deviate from the real product.
1.4 Levels of warning messages
The following levels of warning messages may occur when handling the product.
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, can result in property damage.

1 Information on this Document
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1.5 Symbols in the Document
Icon Explanation
Information that is important for a specific topic or goal, but is not safety-relevant
☐
Indicates a requirement for meeting a specific goal
☑
Desired result
Example
1.6 Typographical Elements in the Document
Typographical element Use Example
bold • Messages
• Terminals
• Elements on a user interface
• Elements to be selected
• Elements to be entered
• Connect the insulated conductors
to the terminals X703:1 to
X703:6.
• Enter 10 in the field Minutes.
>• Connects several elements to be
selected
• Go to Settings > Date.
[Button]
[Key]
• Button or key to be clicked on or
pressed down
• Select [Enter].
# • Placeholder for variable components
(e.g., parameter names)
• Parameter WCtlHz.Hz#
1.7 Additional Information
For more information, please go to www.SMA-Solar.com.
Title and information content Type of information
"Direct Marketing Interface" Technical information
"Parameters and Measured Values"
Device-specific overview of all parameters and measured values and their setting
options
Information about the SMA Modbus registers
Technical Information
"SMA GRID GUARD 10.0 - Grid Management Services via Inverter and System
Controller"
Technical Information
Modbus Application Protocol Specification Modbus specification under
https://modbus.org/specs.php

2 Safety SMA Solar Technology AG
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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.
NOTICE
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 (see Technical Information "Parameters and Measured
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 (see Technical Information
"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").

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NOTICE
Manipulation of system data in networks
You can connect the supported SMA products to the Internet. When connected to the Internet, there is a risk that
unauthorized users can access and manipulate the data of your system.
• Set up a firewall.
• Close unnecessary network ports.
• If absolutely necessary, only enable remote access via a virtual private network (VPN).
• Do not use the port forwarding feature. This also applies to the used Modbus ports.
• Disconnect system components from other network components (network segmentation).
Access to data points after activating the Modbus interface
The read-only access to data points is possible after activating the Modbus interface. The write-only access to all
designated data points is possible. All parameter changes are shown on the user interface of the SMA product.
• Ensure that the Modbus interface is still active after resetting the SMA product to default settings.

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3 Product Overview
3.1 Modbus Protocol
The Modbus Application Protocol is an industrial communication protocol that is currently used in the solar sector
mainly for PV system communication. 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 product with
Modbus interface).
The SMAModbus profile and SunSpecModbus profile are used for SMA products.
3.2 SMAModbus Profile
The SMA Modbus profile contains definitions for SMA products. All available data on SMA products was assigned to
the corresponding Modbus registers for the definition. Not all SMA products support all Modbus registers of the
SMAModbus profile.
3.3 System Topology
An SMA product with Modbus interface is connected with the SCADA system of the electric utility company or the grid
operator via Ethernet. The Modbus interface also enables communication via the Modbus protocol. From the
perspective of the Modbus protocol, an SMA product with Modbus interface constitutes a Modbus server that
supports the SMA Modbus profile.
3.4 Addressing and Data Transmission
3.4.1 Unit IDs
The UnitID is a superordinate addressing type in the Modbus protocol.
The following tables shows the Unit IDs supported by this SMA product.
Unit ID Explanation
1 This Unit ID is reserved for information on the SMA product.
2 This unit ID is reserved for the system parameters and measured values.
10+ This unit ID refers to a device connected under unit ID 10 or higher whose data
are assigned to this unit ID.
3.4.2 Register Address, 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 address of the first Modbus register in a data block is the start address of the data block.
3.4.3 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 (see Section3.4.4, page9).
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.

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3.4.4 Reading and Writing of Data
The Modbus interface can be used via the protocol Modbus TCP. Using Modbus TCP enables read and write access
to the Modbus register. SMA products with Modbus interface use the Modbus TCP as standard.
Access type Explanation
RO (Read-Only) Read only
RW (Read-Write) Read and write
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
Error messages on reading or writing individual Modbus registers
If a Modbus register is accessed, which is not contained in a Modbus profile, or if a Modbus command is incorrect, a
Modbus exception is generated. Modbus exceptions are also generated when write access occurs on a read-only
Modbus register or read access occurs on a write-only Modbus register.
Reading or writing of data blocks
To prevent inconsistencies, data blocks of associated Modbus registers or Modbus register ranges must be read or
written consecutively. The 4 bytes of a 64-bit Modbus register must be read, for example, with an operation in a 64-bit
SMA data type (Read Multiple Registers).
Reading multiple Modbus registers as a data block
If a data block is read and if at least one register defined in the Modbus profile can be determined in its data range,
an answer is returned. If this data block also contains Modbus registers that are not defined in the Modbus profile,
NaN is used for the query values in each case. If none of the Modbus registers are defined in the data range of a
data block in the Modbus profile, the query is invalid, and a Modbus exception is generated.
Error message on writing multiple Modbus registers as a data block
If multiple registers are written in the data block (Modbus command 0x10 and 0x17) and an error occurs when
writing, the process continues with the next register in the data block. If some data is dependent on other data, or if
some data is mutually exclusive, the data is only processed if the entire data block is valid. Otherwise the entire data
block is discarded. In the event of an error, a Modbus exception will be generated.
Modbus exceptions
For Modbus exceptions, see "Modbus Application Protocol Specification" at http://www.modbus.org/specs.php.
1) Number of Modbus registers transferable as a data block per command (16 bit)

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3.4.5 SMA Data Types and NaN Values
The following table shows the data types used in the SMA Modbus profile and compares these to possible NaN
values. The SMA data types are listed in the assignment tables in the Type column. The SMA data types describe the
data widths of the assigned values:
Type Explanation NaN value
S16 A signed word (16-bit) 0x8000
S32 A signed double word (32-bit) 0x8000 0000
STR32 32byte data field, in UTF8 format. ZERO
U16 An unsigned word (16-bit) 0xFFFF
U32 An unsigned double word (32-bit) 0xFFFF FFFF
U32 For status values, only the lower 24 bits of a double word (32-bit)
are used.
0xFFFF FD
U64 An unsigned quadruple word (64-bit) 0xFFFF FFFF FFFF
FFFF
3.4.6 SMA Data Formats
The following SMA data formats describe how SMA data is to be interpreted. The data formats are used, for example,
for the display of data or for its further processing. The SMA data formats are listed in the Format column of the
assignment tables.
Format Explanation
DURATION Time in seconds, in minutes or in hours, depending on the Modbus register
ENUM
or
TAGLIST
Coded numerical values. The breakdown of the possible codes can be found di-
rectly under the designation of the Modbus register in the assignment tables.
FIX0 Decimal number, commercially rounded, without decimal place.
FIX1 Decimal number, commercially rounded, one decimal place.
FIX2 Decimal number, commercially rounded, two decimal places.
FIX3 Decimal number, commercially rounded, three decimal places.
FIX4 Decimal number, commercially rounded, four decimal places.
FUNCTION_SEC The date saved in the Modbus register will be transmitted in the event of a
change to a function and starts this. After execution of the function, no status
value is set. A security question must be executed in the client software prior to
execution of the function.
FW Firmware version
HW Hardware version (e.g. 24)
IP4 4-byte IP address (IPv4) of the form XXX.XXX.XXX.XXX.
RAW Text or number. A RAW number has no decimal places and no thousand or
other separation indicators.

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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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Changing the Modbus port
If you change one of the communication ports, you must also change the corresponding Modbus port of a
connected Modbus/client system. Otherwise the SMA product can no longer be accessed via the Modbus
protocol.
3.6 Data Processing and Time Behavior
In this Section, you can find typical data-processing and reaction times of the Speedwire Modbus interface and time
details for saving parameters in SMA products.
NOTICE
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 (see Technical Information "Parameters and Measured
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 (see Technical Information
"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").
Processing time of setpoints
The signal runtime of the SMA product with Modbus interface is usually 150ms. The signal runtime is the time required
by the SMA product to process incoming Modbus setpoints.
Implementation time/reaction time of setpoints
The physical reaction time of SMA products is normally approx. 1 second. The physical reaction time is the time
between the changing of setpoints in a SMA product until their physical implementation. Such a change would be, for
example, changing cosφ.
Data transfer interval via the Modbus protocol
For system stability reasons, the time period between data transfers via the Modbus protocol should be at least
1second. No more than five parameters and measured values should be simultaneously transmitted.

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Processing time of parameters
The response time is the time between a query and its answer. For write queries, this is around 1 second per parameter
and for read queries around 500 ms. The response time between the write command via Modbus and the response
via Modbus is up to 1 second. When reading back parameter changes, it is necessary to either wait for the response
or take the response time into account.
request #1: write
response #1
request #2: read
response #2
Modbus
client
SMA
Modbus
server
Reaction time: write
Reaction time: read
Adjust the timeout
in acc. with the number
of parameters written (~1 s per parameter)
(< 500 ms)
3.7 Number codes of time zones
The following table contains the most important time zones and their number codes in the SMA Modbus profile. If the
location is known, you can determine the numerical key (code) and the time zone. In addition, take account of local
regulations for summer/winter time.
City/Country Code Time zone
UTC-AUTO 9499 AUTO
Abu Dhabi, Muscat 9503 UTC+04:00
Adelaide 9513 UTC+09:30
Alaska 9501 UTC-09:00
Amman 9542 UTC+02:00
Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna 9578 UTC+01:00
Arizona 9574 UTC-07:00
Astana, Dhaka 9515 UTC+06:00
Asuncion 9594 UTC-04:00
Athens, Bucharest, Istanbul 9537 UTC+02:00
Atlantic (Canada) 9505 UTC-04:00
Auckland, Wellington 9553 UTC+12:00
Azores 9509 UTC-01:00
Baghdad, Istanbul 9504 UTC+03:00
Baku 9508 UTC+04:00

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City/Country Code Time zone
Bangkok, Hanoi, Jakarta 9566 UTC+07:00
Beirut 9546 UTC+02:00
Belgrade, Bratislava, Budapest, Ljubljana, Prague 9517 UTC+01:00
Bogotá, Lima, Quito 9563 UTC-05:00
Brasilia 9527 UTC-03:00
Brisbane 9525 UTC+10:00
Brussels, Copenhagen, Madrid, Paris 9560 UTC+01:00
Buenos Aires 9562 UTC-03:00
Canberra, Melbourne, Sydney 9507 UTC+10:00
Caracas 9564 UTC-04:30
Casablanca 9585 UTC+00:00
Cayenne 9593 UTC-03:00
Chennai, Kolkata, Mumbai, New Delhi 9539 UTC+05:30
Chicago, Dallas, Kansas City, Winnipeg 9583 UTC-06:00
Chihuahua, La Paz, Mazatlán 9587 UTC-07:00
Darwin 9506 UTC+09:30
Denver, Salt Lake City, Calgary 9547 UTC-07:00
Dublin, Edinburgh, Lisbon, London 9534 UTC+00:00
Yerevan 9512 UTC+04:00
Fiji, Marshall Islands 9531 UTC+12:00
Georgetown, La Paz, San Juan 9591 UTC-04:00
Greenland 9535 UTC-03:00
Guadalajara, Mexico City, Monterrey 9584 UTC-06:00
Guam, Port Moresby 9580 UTC+10:00
Harare, Pretoria 9567 UTC+02:00
Hawaii 9538 UTC-10:00
Helsinki, Kiev, Riga, Sofia, Tallinn, Vilnius 9532 UTC+02:00
Hobart 9570 UTC+10:00
Indiana (East) 9573 UTC-05:00

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City/Country Code Time zone
International Date Line (West) 9523 UTC-12:00
Irkutsk 9555 UTC+08:00
Islamabad, Karachi 9579 UTC+05:00
Yakutsk 9581 UTC+09:00
Yekaterinburg 9530 UTC+05:00
Jerusalem 9541 UTC+02:00
Kabul 9500 UTC+04:30
Cairo 9529 UTC+02:00
Cape Verde Islands 9511 UTC+05:45
Caucasus Standard Time 9582 UTC+04:00
Krasnoyarsk 9556 UTC+07:00
Kuala Lumpur, Singapore 9544 UTC+08:00
Kuwait, Riyadh 9502 UTC+03:00
Magadan, Solomon Islands, New Caledonia 9519 UTC+11:00
Manaus 9516 UTC-04:00
Midway Islands, Samoa 9565 UTC-11:00
Minsk 9526 UTC+02:00
Mid-Atlantic 9545 UTC-02:00
Monrovia, Reykjavík 9536 UTC+00:00
Montevideo 9588 UTC-03:00
Moscow, St. Petersburg, Volgograd 9561 UTC+03:00
Nairobi 9524 UTC+03:00
Newfoundland 9554 UTC-03:30
New York, Miami, Atlanta, Detroit, Toronto 9528 UTC-05:00
Novosibirsk 9550 UTC+06:00
Nuku'alofa 9572 UTC+13:00
Osaka, Sapporo, Tokyo 9571 UTC+09:00
Pacific (U.S., Canada) 9558 UTC-08:00
Beijing, Chongqing, Hong Kong, Ürümqi 9522 UTC+08:00

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City/Country Code Time zone
Perth 9576 UTC+08:00
Petropavlovsk-Kamchatsky 9595 UTC+12:00
Port Louis 9586 UTC+04:00
Santiago 9557 UTC-04:00
Sarajevo, Skopje, Warsaw, Zagreb 9518 UTC+01:00
Saskatchewan 9510 UTC-06:00
Seoul 9543 UTC+09:00
Sri Jayawardenepura 9568 UTC+05:30
Taipei 9569 UTC+08:00
Tashkent 9589 UTC+05:00
Teheran 9540 UTC+03:30
Tbilisi 9533 UTC+04:00
Tijuana, Lower California (Mexico) 9559 UTC-08:00
Ulan Bator 9592 UTC+08:00
West-Central Africa 9577 UTC+01:00
Windhoek 9551 UTC+02:00
Vladivostok 9575 UTC+10:00
Yangon (Rangoon) 9549 UTC+06:30
Central America 9520 UTC-06:00
3.8 Frequently Used Number Codes
The following table contains number codes which, as function coding in data format ENUM, are frequently used in the
SMA Modbus profile.
The event numbers of the SMA products are not decrypted with the number codes in this
document.
The event numbers of the SMA products are device-specific and cannot be decrypted with the number codes in
this document. To decrypt the event numbers of low or medium-power inverters, you require additional information
such as operating parameters and measured values (see Technical Information with device-specific overview of all
parameters and measured values and their setting options "Measured Values and Parameters" at www.SMA-
Solar.com).
Code Explanation Code Explanation
51 Closed 1438 Automatic

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Code Explanation Code Explanation
276 Instantaneous value 1455 Emergency stop
295 MPP 1466 Waiting
303 Off 1467 Starting
308 On 1468 MPP search
309 Operation 1469 Shutdown
311 Open 1470 Event message
336 Contact the manufacturer 1471 Warning/error e-mail OK
337 Contact the installer 1472 Warning/error e-mail not OK
338 Invalid 1473 System info e-mail OK
381 Stop 1474 System info e-mail not OK
455 Warning 1475 Error e-mail OK
461 SMA (manufacturer specification) 1476 Error e-mail not OK
1041 leading 1477 Warning e-mail OK
1042 lagging 1478 Warning e-mail not OK
1069 Reactive power / voltage characteristic curve
Q(V)
1479 Wait after grid interruption
1070 Reactive power Q, direct setpoint 1480 Wait for electric utility company
1071 Reactive power const. Q (kVAr) 2055 Status digital inlet: DI1
1072 Q specified by PV system control 2056 Status digital inlet: DI1, DI2
1073 Reactive power Q(P) 2057 Status digital inlet: DI1, DI2, DI3
1074 cos φ, direct setpoint 2058 Status digital inlet: DI1, DI2, DI3, DI4
1075 cos φ, setpoint via system control 2059 Status digital inlet: DI1, DI2, DI4
1076 cos φ(P) characteristic curve 2060 Status digital inlet: DI1, DI3
1077 Active power limitation P (W) 2061 Status digital inlet: DI1, DI3, DI4
1078 Active power limitation P (%) of PMAX 2062 Status digital inlet: DI1, DI4
1079 Active power limitation P via system control 2063 Status digital inlet: DI2
1387 Reactive power Q, setpoint via analog input 2064 Status digital inlet: DI2, DI3
1388 cos φ, setpoint via analog input 2065 Status digital inlet: DI2, DI3, DI4
1389 Reactive power / voltage characteristic curve
Q(U) with hysteresis and deadband
2066 Status digital inlet: DI2, DI4
1390 Active power limitation P via analog input 2067 Status digital inlet: DI3
1391 Active power limitation P via digital inputs 2068 Status digital inlet: DI3, DI4

3 Product Overview SMA Solar Technology AG
Technical InformationSMAModbus-ennexOS-TI-en-1018
Code Explanation Code Explanation
1392 Errors 2069 Status digital inlet: DI4
1393 Wait for PV voltage 4405 Maximum active power WMax
1394 Wait for valid AC grid 4406 Maximum reactive power VArMax
1395 DC area 4520 Mean value of the phase voltages
1396 AC grid 4521 Maximum phase voltage
Also see:
• Contact⇒page20

4 Configuration
SMA Solar Technology AG
Technical Information 19SMAModbus-ennexOS-TI-en-10
4 Configuration
In order to be able to use Modbus registers for grid management services, the grid management service must be
configured on the SMA System Manager. In connection with an energy meter, an SMASystemManager takes over
closed-loop control at the point of interconnection and can control or regulate subordinate inverters. The System
Manager also takes over system monitoring and communication to the Sunny Portal powered by ennexOS.
Requirement:
☐ The correct country standard must be selected during commissioning.
☐ You must be logged in on the user interface of the device that has been configured as System Manager.
☐ The Modbus server must be activated in the device that has been configured as the System Manager (the
Modbus server is only available via Modbus TCP (not UDP)).
Procedure:
1. Select the menu item Grid management services in the menu Configuration.
2. Select the button Configuration and activation in the Active power method and Reactive power method
row.
3. Select the operating mode Closed loop or Open loop.
4. Select the signal source Modbus.
5. Make settings in accordance with the grid operator's specifications and confirm each step by clicking on
[Continue].
6. Click on [Save].

5 Contact SMA Solar Technology AG
Technical InformationSMAModbus-ennexOS-TI-en-1020
5 Contact
You can find your country's contact information at:
https://go.sma.de/service