Siemens SICAM Q200 7KG97 User manual

SICAM
Multifunctional Recorder
SICAM Q200 7KG97
Communication
V02.00
Manual
E50417-C1040-C606-A3
Preface
Open Source Software
Table of Contents
User Information 1
Communication Modbus 2
Communication IEC 61850 3
Glossary

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NOTE
For your own safety, observe the warnings and safety instructions contained in this document, if available.
Disclaimer of Liability
This document has been subjected to rigorous technical
review before being published. It is revised at regular inter-
vals, and any modifications and amendments are included
in the subsequent issues. The content of this document has
been compiled for information purposes only. Although
Siemens AG has made best efforts to keep the document as
precise and up-to-date as possible, Siemens AG shall not
assume any liability for defects and damage which result
through use of the information contained herein.
This content does not form part of a contract or of business
relations; nor does it change these. All obligations of
Siemens AG are stated in the relevant contractual agree-
ments.
Siemens AG reserves the right to revise this document from
time to time.
Document version: E50417-C1040-C606-A3.02
Edition: 03.2017
Version of the product described: V02.00
Copyright
Copyright © Siemens AG 2017. All rights reserved.
The disclosure, duplication, distribution and editing of this
document, or utilization and communication of the content
are not permitted, unless authorized in writing. All rights,
including rights created by patent grant or registration of a
utility model or a design, are reserved.
Registered Trademarks
SIPROTEC®, DIGSI®, SIGUARD®, SIMEAS®, and SICAM® are
registered trademarks of Siemens AG. Any unauthorized
use is illegal. All other designations in this document can
be trademarks whose use by third parties for their own
purposes can infringe the rights of the owner.

Preface
Purpose of the Manual
This manual describes the communication of the SICAM Q200 device.
Target Audience
This manual is intended for project engineers, commissioning and operating personnel in electrical systems
and power plants.
Scope
This manual is valid for SICAM Q200.
Indication of Conformity
This product complies with the directive of the Council of the European Communities
on harmonization of the laws of the Member States relating to electromagnetic
compatibility (EMC Directive 2014/30/EU) and concerning electrical equipment for use
within specified voltage limits (Low Voltage Directive 2014/35/EU).
This conformity has been proved by tests performed according to the Council Directive
in accordance with the generic standard EN 61000-6-5 (for EMC directive) and with the
product standard EN 62586-1 (for Low Voltage Directive) by Siemens AG
The device is designed and manufactured for application in an industrial environment.
The product conforms with the international standards of EN 62586 and the German
standard VDE 0415.
Other Standards
This product is UL-certified to Standard UL 61010-1, third edition, based on the Technical data.
(UL File No.: E228586)
IND. CONT. EQ.
69CA
Open-type Measuring Equipment
2UD1
For further information see UL database on the internet: http://ul.com.
Select Online Certifications Directory and insert E228586 under UL File Number.
Additional Support
For questions about the system, please contact your Siemens sales partner.
Support
Our Customer Support Center provides a 24-hour service.
Phone: [phone]
Fax: [phone]
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E-Mail: [email protected]
Training Courses
Inquiries regarding individual training courses should be addressed to our Training Center:
Siemens AG
Siemens Power Academy TD
Humboldtstraße 59
90459 Nürnberg
Germany
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.siemens.com/poweracademy
Notes on Safety
This document is not a complete index of all safety measures required for operation of the equipment (module
or device). However, it comprises important information that must be followed for personal safety, as well as
to avoid material damage. Information is highlighted and illustrated as follows according to the degree of
danger:
!
DANGER
DANGER means that death or severe injury will result if the measures specified are not taken.
²Comply with all instructions, in order to avoid death or severe injuries.
!
WARNING
WARNING means that death or severe injury may result if the measures specified are not taken.
²Comply with all instructions, in order to avoid death or severe injuries.
!
CAUTION
CAUTION means that medium-severe or slight injuries can occur if the specified measures are not taken.
²Comply with all instructions, in order to avoid moderate or minor injuries.
NOTICE
NOTICE means that property damage can result if the measures specified are not taken.
²Comply with all instructions, in order to avoid property damage.
Preface
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Important information about the product, product handling or a certain section of the documentation
which must be given particular attention.
Qualified Electrical Engineering Personnel
Only qualified electrical engineering personnel may commission and operate the equipment (module, device)
described in this document. Qualified electrical engineering personnel in the sense of this manual are people
who can demonstrate technical qualifications as electrical technicians. These persons may commission,
isolate, ground and label devices, systems and circuits according to the standards of safety engineering.
Proper Use
The equipment (device, module) may be used only for such applications as set out in the catalogs and the
technical description, and only in combination with third-party equipment recommended and approved by
Siemens.
Problem-free and safe operation of the product depends on the following:
•Proper transport
•Proper storage, setup and installation
•Proper operation and maintenance
When electrical equipment is operated, hazardous voltages are inevitably present in certain parts. If proper
action is not taken, death, severe injury or property damage can result:
•The equipment must be grounded at the grounding terminal before any connections are made.
•All circuit components connected to the power supply may be subject to dangerous voltage.
•Hazardous voltages may be present in equipment even after the supply voltage has been disconnected
(capacitors can still be charged).
•Operation of equipment with exposed current-transformer circuits is prohibited. Before disconnecting the
equipment, ensure that the current-transformer circuits are short-circuited.
•The limiting values stated in the document must not be exceeded. This must also be considered during
testing and commissioning.
Used Symbols
No. Symbol Description
1 Direct current
IEC 60417-5031
2 Alternating current
IEC 60417-5032
3 Direct and alternating current
IEC 60417-5033
4 3-phase alternating current
5 Earth (ground) terminal
IEC 60417-5017
6 Protective conductor terminal
IEC 60417-5019
Preface
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Open Source Software
The product contains, among other things, Open Source Software developed by third parties. The Open
Source Software used in the product and the license agreements concerning this software can be found in the
Readme_OSS. These Open Source Software files are protected by copyright. Your compliance with those
license conditions will entitle you to use the Open Source Software as foreseen in the relevant license. In the
event of conflicts between Siemens license conditions and the Open Source Software license conditions, the
Open Source Software conditions shall prevail with respect to the Open Source Software portions of the soft-
ware. The Open Source Software is licensed royalty-free. Insofar as the applicable Open Source Software
License Conditions provide for it you can order the source code of the Open Source Software from your
Siemens sales contact - against payment of the shipping and handling charges - for a period of at least 3 years
since purchase of the Product. We are liable for the Product including the Open Source Software contained in
it pursuant to the license conditions applicable to the Product. Any liability for the Open Source Software
beyond the program flow intended for the Product is explicitly excluded. Furthermore any liability for defects
resulting from modifications to the Open Source Software by you or third parties is excluded. We do not
provide any technical support for the Product if it has been modified.
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Table of Contents
Preface..........................................................................................................................................................3
Open Source Software..................................................................................................................................7
1 User Information........................................................................................................................................ 11
1.1 General User Information.................................................................................................. 12
2 Communication Modbus............................................................................................................................ 13
2.1 Functions, Properties and Exception Responses for Modbus TCP Server and Modbus
RTU (Slave)....................................................................................................................... 14
2.2 Functions and Properties for Modbus RTU Master.............................................................. 16
2.3 Exception Responses from the Modbus Gateway............................................................... 18
2.4 Modbus Registers..............................................................................................................19
2.4.1 Modbus Specifications................................................................................................. 19
2.4.2 Mapping Documentation of the SICAM Devices............................................................ 19
2.5 Modbus Data Format.........................................................................................................21
2.5.1 Data Types - General....................................................................................................21
2.5.2 Data Type - Measured Value (Read)..............................................................................21
2.5.3 Data Type - Date/Time (Read and Write)....................................................................... 23
2.5.4 Data Type - Indications (Read)......................................................................................24
2.5.5 Data Type - Controllable Indications (Read and Write)...................................................24
2.5.6 Data Type - Counter (Read).......................................................................................... 25
3 Communication IEC 61850......................................................................................................................... 27
3.1 General.............................................................................................................................28
Glossary...................................................................................................................................................... 29
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User Information
1.1 General User Information 12
1
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General User Information
This manual describes how SICAM Q200 communicates with peripheral devices/systems. For detailed device
information, see the device manual.
Communication
The communication interfaces of SICAM Q200 make 4 communication types possible using the corresponding
communication protocols:
•Modbus TCP Server via Ethernet interface
•Modbus RTU (master and slave) via RS485 interface
•Modbus TCP to Modbus RTU Gateway
•IEC 61850 via Ethernet interface
To communicate with control systems and other process automation equipment and to transmit, for example,
operational measured values, metered values, indications, and load profiles, the device provides 2 switchable
Ethernet interfaces and an RS485 interface with 2 connectors for serial communication.
If parameterized accordingly, the device can communicate over the Ethernet interface and simultaneously
over the serial interface. It is possible, for example, to parameterize and retrieve data over the Ethernet inter-
face, while the serial interface handles the protocol traffic with a Modbus slave device.
Communication via Ethernet Interface
The device has 2 Ethernet ports which can be used seperately, or be combined to form a "Daisy-chain".
Via the Ethernet interface the following functions are supported:
•Parameterization, analysis and diagnosis with HTML pages
•DHCP (Dynamic Host Configuration Protocol)1 to assign the network configuration (IP address etc.) to
clients in an Ethernet network with DHCP server
•Time synchronization via NTP
•Data transfer (measured data, metered values, load profiles and indications/events) to connected devices
via Modbus TCP or IEC 61850-Server
•Data transfer to SICAM PAS/PQS for waveform record (COMTRADE IEEE...) and power quality and histor-
ical data (PQDIF IEEE...)
SICAM Q200 supports the following TCP/IP services (TCP/IP protocol stack):
•TCP/IP IPv4
•DHCP client (Dynamic Host Configuration Protocol)
•NTP (Network Time Protocol)
•HTTP
•SNMPv3 (Simple Network Management Protocol)
Communication via RS485 Interface
SICAM Q200 includes a serial interface, which communicates via two parallel switched RJ45 plug connectors.
The RS485 interface allows for Modbus RTU Master and Modbus RTU Slave functionality. This interface
supports the transmission of the measured data, metered values, load profiles, indications, and time synchro-
nization.
1.1
1 DHCP cannot be used with IEC 61850 enabled.
User Information
1.1 General User Information
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Communication Modbus
2.1 Functions, Properties and Exception Responses for Modbus TCP Server and Modbus RTU
(Slave)
14
2.2 Functions and Properties for Modbus RTU Master 16
2.3 Exception Responses from the Modbus Gateway 18
2.4 Modbus Registers 19
2.5 Modbus Data Format 21
2
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Functions, Properties and Exception Responses for Modbus TCP
Server and Modbus RTU (Slave)
Modbus Functions for Modbus TCP Server and Modbus RTU (Slave)
The Modbus TCP server and Modbus RTU (slave) of SICAM Q200 supports the following Modbus functions:
Table 2-1 Supported Modbus TCP Server and Modbus RTU (slave) Functions
Function
Number
Function Name Description
03
(03H)
Read Holding Regis-
ters
Reading one or more holding registers from the Modbus server
Up to 125 registers can be read with one message.
06
(06H)
Write Single Register Writing a holding register
Function 16 is used for writing multiple holding register using one
Modbus message.
16
(10H)
Write Multiple Regis-
ters
Writing one or more holding registers
Up to 123 registers can be written with one message.
Properties for Modbus TCP Server
•Connection-oriented Ethernet protocol based on TCP/IP
•Use of IP addresses for addressing individual components connected to the bus (bus nodes)
•The Modbus TCP protocol has the TCP port number 502 reserved on the server side. It is possible to use a
parameterized port number.
•All data types in the Modbus TCP messages which are larger than 1 byte are stored in the big-endian
format, that is the most significant byte (MSB) is stored at the lowest register address and is transmitted
first.
•Communication sequence:
– The client sends a request to the server to start a data transmission from the server to the client.
– If the requested data are not available, the server sends an error feedback to the client.
•The Modbus TCP data packet has a maximum size of 260 bytes:
– 253 bytes max. for data and
– 7 bytes for the Modbus TCP header
Properties for Modbus RTU (Slave)
•Client-server protocol
•All clients have a unique address in the range from 1 to 247.
•Packets with the address = 0 are forwarded to all clients (broadcast).
•The individual data bytes in the messages are transmitted asynchronously with 11 bits:
– 1 start bit,
– 8 data bits,
– 1 parity bit and 1 stop bit or
– No parity bit and 2 stop bits
•Single messages are separated by bus silent intervals of at least 3.5 character times and end with a CRC
code for error detection.
•RS485 is used as interface.
2.1
Communication Modbus
2.1 Functions, Properties and Exception Responses for Modbus TCP Server and Modbus RTU (Slave)
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•The Modbus RTU message has a maximum size of 256 bytes:
– 1 byte server address
– 253 bytes for data
– 2 bytes for CRC
Exception Responses for Modbus TCP Server and Modbus RTU (slave)
The Modbus server performs a series of consistency checks of the Modbus client requests, and if errors (for
example request to read a nonexistent register) are detected, it generates Modbus exception codes which are
signaled to the Modbus client in exception responses messages.
The messages contain the following codes:
Exception Code 01 - ILLEGAL_FUNCTION
•The Modbus client uses a function that is not supported by the Modbus server of the SICAM Q200. The
supported Modbus functions are listed in the next chapter.
Exception Code 02 - ILLEGAL_DATA_ADDRESS
•An attempt is made to read out or write to a nonexistent Modbus register.
•An attempt is made to read out or write to too many registers. A Modbus message enables reading out
125 holding registers and writing to 123 holding registers maximum.
•The Modbus client tries to write to a register in the Modbus server for which only read access is allowed
according to the Modbus mapping.
Exception Code 03 - ILLEGAL_DATA_VALUE
•The redundancy client addresses a register that does not allow access to partial data. The register has a
complex data structure and is distributed across several registers. The register can be read or written only
as a whole.
•The Modbus client tries to write to the Modbus server for which the access rights are set to "read only".
Exception Code 04 - SERVER_FAILURE
•Error during the time format conversion in the Modbus server because a faulty date/time format was
received via Modbus, for example month format > 12.
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The parameterization of the Ethernet communication via the Ethernet interface are described in detail in
the SICAM Q200 device manual.
Communication Modbus
2.1 Functions, Properties and Exception Responses for Modbus TCP Server and Modbus RTU (Slave)
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Functions and Properties for Modbus RTU Master
Supported Modbus Register Sets
•Coil status registers (0x references, read only)
•Input status registers (1x references, read only)
•Input registers (3x references, read only)
•Holding registers (4x references, read only)
Supported Modbus Functions
The Modbus RTU Master of SICAM Q200 supports the following Modbus functions:
Table 2-2 Supported Modbus RTU Master Functions
Function
Number
Function Name Description
01 (0x01H) Read Coil Status Reading one or several coil status registers of a
Modbus slave
02 (0x02H) Read Discrete Inputs (Read Input
Status)
Reading one or several input status registers of a
Modbus slave
03 (0x03H) Read Holding Registers Reading one or several holding registers of a Modbus
slave
04 (0x04H) Read Input Registers Reading one or several input registers of a Modbus
slave
Support of Modbus Slave Devices
The Modbus RTU master supports 16 Modbus slave devices each with:
•15 readable measured values per Modbus slave device
•6 readable indications from each Modbus slave device
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If more than the specified number of measured values and/or indications have to be read by a Modbus
slave device, it is possible to assign the same address to multiple devices when configuring the devices
connected to the Modbus master in SICAM Q200. The data of all devices with the same address are then
queried by a Modbus slave device.
Properties of the Modbus RTU Master
•Master-Slave protocol
•The individual data bytes in the messages are transmitted asynchronously with 11 bits:
1 start bit,
8 data bits,
1 parity bit and 1 stop bit or
No parity bit and 2 stop bits
•Single messages are separated by bus silent intervals of at least 3.5 character times and end with a CRC
code for error detection.
•RS485 is used as interface.
2.2
Communication Modbus
2.2 Functions and Properties for Modbus RTU Master
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•The Modbus RTU message has a maximum size of 256 bytes:
1 byte server address
253 bytes for data
2 bytes for CRC
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The parameterization of the serial communication via the RS485 interface, the Modbus slave devices, and
the associated mapping are described in detail in the SICAM Q200 device manual.
Communication Modbus
2.2 Functions and Properties for Modbus RTU Master
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Exception Responses from the Modbus Gateway
If a request from the Modbus gateway cannot be forwarded to the associated Modbus slave device or the
Modbus slave device does not respond, the Modbus gateway sends Modbus exception codes in exception
responses messages to the Modbus TCP client.
The messages contain the following codes:
•Exception code 10 GATEWAY_PATH_UNAVAILABLE
The gateway function was activated in the SICAM Q200 at the Ethernet interface settings, but Modbus
RTU master was not selected as serial protocol.
•Exception code 11 GATEWAY_TARGET_DEVICE_FAILED_TO_RESPOND
No response from the Modbus slave device to which the request message was sent according to the unit
ID (observing the parameterized response time-out and message repetitions).
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The Modbus RTU master and the Modbus gateway function can be operated in parallel.
2.3
Communication Modbus
2.3 Exception Responses from the Modbus Gateway
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Modbus Registers
Modbus Specifications
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The Modbus specification with a detailed explanation of the Modbus protocol is provided in:
•Modbus over Serial Line
Specification & Implementation Guide
http://www.modbus.org
•Modbus Application Protocol Specification
http://www.modbus.org
•Modbus Messaging on TCP/IP Implementation Guide
http://www.modbus.org
Generally, we have to differentiate between the following elements in Modbus:
•The register number
•The register address in Modbus messages
Register Number
The register number characterizes a Modbus register using a 5-digit or 6-digit decimal number where the digit
with the highest value defines the register type:
•0 – coil status register
•1 – input status register
•3 – input register
•4 – holding register
Counting of the register number starts at 1 for each register type, for example, for the 5-digit display:
•00127 = coil status register 127 (alternatively: coil 127)
•400108 = holding register 108
Register Address
All address data in Modbus messages refer to the value 0. Therefore, register number and register address are
related as follows:
•register address = register number - 1
The following applies to the above examples:
•Coil 127 is addressed as 126 (007Ehex) in a Modbus message to query or describe the coil status register.
•400108 is addressed as 107 (006Bhex) in a Modbus message to query or describe the holding register.
Mapping Documentation of the SICAM Devices
The Modbus bus mapping documents for the individual SICAM devices use the register number to reference a
piece of information in the Modbus register set.
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You find the Modbus bus mapping document (Excel table) for the SICAM Q200 devices under: http://
www.siemens.com/sicam-q200
2.4
2.4.1
2.4.2
Communication Modbus
2.4 Modbus Registers
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Only holding registers are used for SICAM Q200. All measured values, indications, metered values etc. are
stored in these holding registers.
Characterization of the register type (holding register) in the highest digit of the register number is not used in
the Modbus documentation of SICAM Q200.
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For the access to measured values, the measured values read with a telegram must be exclusively in this
range. The addressed address range in a requesting telegram must not exceed the register range or fall
below this range.
Example:
If the average values of the harmonics of the voltage at the phases a, b, and c must be read, 3 requesting
telegrams must be sent. Each of these telegrams contains the register range entered for these values (or a part
of it) for phases a, b, and c.
In SICAM PQS, the user must define different corresponding requesting groups for this, for example:
[sc_PQS figure, 1, en_US]
Figure 2-1 Settings in SICAM PQS
Communication Modbus
2.4 Modbus Registers
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