M-bus System Basic Documentation Edition 2.1 CE1P5361en 08.02.
Siemens Switzerland Ltd Building Technologies Group International Headquarters HVAC Products Gubelstrasse 22 CH- 6301 Zug Tel. +41 41 724 24 24 Fax +41 41 724 35 22 www.sbt.siemens.com © 2000-2007 Siemens Switzerland Ltd Subject to alteration 2/90 Building Technologies HVAC Products M-bus System CE1P5361en 08.02.
Contents 1 System............................................................................................................. 7 1.1 Introduction...................................................................................................... 7 1.2 System overview ............................................................................................. 7 1.3 Use .................................................................................................................. 8 1.
2.5.2 Use.................................................................................................................35 2.5.3 Functions .......................................................................................................35 2.5.4 Equipment combinations................................................................................35 2.6 M-bus repeater WZC-R250............................................................................36 2.6.1 Introduction ....................
.4 M-bus............................................................................................................. 48 5.4.1 General.......................................................................................................... 48 5.4.2 Fundamentals................................................................................................ 48 5.4.3 Protection against transients ......................................................................... 50 5.4.4 Planning process ....
8.2 Protection against transients..........................................................................66 8.2.1 Components...................................................................................................66 8.2.2 Sources..........................................................................................................67 8.2.3 Mounting notes ..............................................................................................67 8.2.4 Regulations for installation.
1 System 1.1 Introduction The M-bus system is used for the remote readout, remote operation and monitoring of consumption meters and controllers having an M-bus connection facility conforming to EN 1434-3 and of consumption meters of the Siemeca™ AMR system. The present Basic Documentation contains basic information which is required for planning and operating the M-bus system. First, a description of the system itself, of the system functions and system applications is given.
1.3 Use The M-bus system is used for consumption cost billing and remote monitoring of • community and district heating systems • multifamily houses Among other devices, the following types of units can be connected: M-bus meters • Heat meters SONOHEAT®, MEGATRON®2, SONOGYR® energy*, and SONOGYR® WSD…* • Water meters VOLUTRON®2 • Consumption meters via pulse adapter AEW21.
1.
2 System components 2.1 PC software ACS7… 2.1.1 Introduction The ACS7… plant operating software is used for the remote operation and monitoring of M-bus plant. Also, the M-bus central units are commissioned with the help of the ACS7… plant operating software. 2.1.
2.1.
The operating software contains applications with the following features: • The following applications can be started several times and run at the same time: − Plant Diagram − Popcard − Online Trend − Offline Trend − File Transfer − Parameter Settings − Commissioning Report • Several applications can be used simultaneously (e.g. Plant Diagram and Popcard) • Active applications (e.g.
Plant Diagram This application permits the graphic presentation of plant (individual devices or groups of devices) with the following choices: • Automatic updating of process values in the diagram • Changing setpoints in the diagram • In the case of user-defined diagrams, links to other diagrams can be established A library with standard plant diagrams is assigned to each device type.
Popcard This application is used to visualize the transmitted data points of each device and the data points‘ values. Each type of device uses standard popcards. Makeup and contents of the individual pages are predefined. User-defined popcards can be created for each device and each node. Data points of all subordinate devices can be added to popcards that are assigned to a node. Standard and user-defined popcards can be copied to devices of the same type or to superposed nodes.
Trend This application allows any data points of a plant to be logged. The description, the selected data points of all devices of a plant and the sample interval are defined in the trend definition. With online trend, it is also possible to select storage of the commissioning report at the start and end of the logging process. In offline trend, start and end of logging can be defined. In trend logging, the cyclically queried data are stored and graphically presented.
File Transfer This application makes possible the exchange of data between the OZW10 and a PC in M-bus plant. It enables • files to be copied from the central unit or its memory card to the PC • files to be copied from the PC to the central unit’s memory card • memory cards to be formatted Typically, the function is used with the OZW10 to upload billing data from the central unit. For information about the data contained in a billing file, refer to subsection 8.5.
Parameter Settings This application is used to downloaded, uploaded or compare the settings of the connected devices. The settings can be • stored as a parameter set • compared with a stored parameter set • compared with the standard parameter set • overwritten with a stored parameter set • overwritten with the parameter set The parameter sets can be edited either online or offline. The individual data points of a parameter set can be selected.
Commissioning Report This application is used to log the setting values of individual devices, groups of selected devices or of entire plants. The data points of the selected devices are stored with data point designation, value, unit and state. The commissioning report can be printed out and exported as an ASCII file. 2.1.4 Overview Functions of ACS Alarm Alarm software is a superposed program contained in all types of software packages.
Function • Direct • Modem Description On the OZW10 and OZW111, with standard null modem cable Via telephone modems The alarm software contains the following applications for the reception and further handling of alarms and of the plant’s state: • Alarm • System Report Alarm System Report Alarm Every alarm received from the plant is entered in an alarm list. The process that takes place after reception of an alarm can be configured: • Audible signal • A popup window opens.
The user can select the columns of the alarm list. The column designations and the arrangement of the individual columns can be configured on a user-specific basis. The entire alarm list can be exported as an ASCII file. Also, to facilitate further handling in other programs, the alarms received are automatically exported to an ASCII file. An overview of the possible alarms from the OZW10 and OZW111 is given in section 8.7 "Error messages from M-bus devices and alarm messages delivered by the OZW…".
2.1.5 The Batchjob software is a superposed program that is available depending on the type of selected software package.
Logging of Task This application logs the processes taking place when a task is executed. All tasks are included, irrespective of automatic or manual execution. 22/90 Building Technologies HVAC Products M-bus System 2 System components CE1P5361en 08.02.
2.1.6 Functions of ACS Service The ACS service software has a fixed functionality and is included in all software packages.
The device view shows the plant in accordance with device addressing. In the plant view, the tree structure can be defined on a user-specific basis. The tree structure is defined by including nodes. The devices can be assigned to the nodes as required. • Switching between device view and plant view is possible at any time. A description can be added to each device and each node • The plant view in the form of a tree structure can either be shown or hidden 2.1.
Number of plants The number of plants is unlimited for all programs (ACS Operation, ACS Alarm, ACS Batchjob and ACS Service). In the ACS programs, a plant is created for each central unit. Functions in connection with M-bus devices In the ACS7… programs, data of all types of M-bus devices can be displayed and downloaded.
PC component Ports Operating system Diskette drive CD-ROM or DVD drive Minimum requirement USB 1.1 and higher Serial COM up to 19,200 Baud (directly or via modem) Windows XP, service pack 1 Windows 2000, service pack 3 3½”, 1.44 MB, for diskette with log file PC software To further handle exported data, a user program, such as Microsoft® Excel, is required.
• Consumption meters via pulse adapter AEW21.2, Relay PadpulsM1 • Heat cost allocators MEMOTRON®2 WHE2* M-bus controllers • District heating controllers SIGMAGYR® RVD2… • District heating controllers RVP97* Siemeca™ AMR Consumption meters of the Siemeca™ AMR system can be integrated via WTX16 or WTT16 radio nodes (V4.0 or higher): • Heat meters MEGATRON®2 • Water meters VOLUTRON®2 • Heat cost allocators MEMOTRON®2 WHE26 • Consumption meters via pulse adapter AEW36.2 Other devices on request.
The device list is stored in nonvolatile memory. For detailed information about the search run, refer to section 8.3 "Search run of central units OZW10 and OZW111". Readout The M-bus central unit offers a number of choices for reading the M-bus and Siemeca™ AMR devices.
Digital inputs Alarms The M-bus central unit has 4 digital inputs for the connection of potential-free contacts. When a contact closes, the M-bus central unit indicates an alarm. The M-bus central unit identifies the following types of faults: • Signals at the digital inputs: Immediate delivery of alarm messages • Failures of M-bus and Siemeca™ AMR devices: Cyclic readout of data by the central unit, depending on the setting made (refer to "Readout": Readout interval, alarm interval).
2.2.4 Communication For detailed information about communication between ACS… and OZW…, refer to section 6.1 "Communication between ACS7… and OZW…". Direct connection In the case of a direct connection, a standard null modem cable is required between Mbus central unit and PC. Telephone connection In the case of a connection via the telephone network, a Hayes-compatible modem is required on each side. 2.2.5 Signal converter Equipment combinations The M-bus central unit has an RS-485 port.
2.2.6 Spare parts For upgrading the OZW10, the most recent software version can be ordered as a separate item: Product Part number 74 340 0002 0 Program memory OZW10 It is always the most recent version that is supplied. When ordering the above part number, 16 pairs of OTP will be supplied. Smaller quantities cannot unfortunately be provided. To change the OTPs, proceed as follows: 1. Save the billing file. 2. Open the OZW10 (screw on the front of the unit at bottom right). 3.
2.3.3 Functions The M-bus central unit • identifies the connected M-bus devices via its automatic search run (for detailed information, refer to section 8.
Digital inputs The M-bus central unit has 2 digital inputs for the connection of potential-free contacts. The operating action of the contacts (active closed or active open) can be parameterized. Alarms The M-bus central unit can detect the following types of fault: • Messages delivered to the digital inputs: Immediate delivery of alarms • Failures of M-bus devices: Cyclic readout of device data by the central unit, depending on the setting made (refer to "Readout": Readout interval, alarm interval).
2.3.4 Communication For detailed information about the communication between ACS… and OZW…, refer to section 6.1 "Communication between ACS7… and OZW…". Direct connection In the case of a direct connection, a null modem is required between M-bus central unit and PC. Telephone connection In the case of a connection via the telephone network, a Hayes-compatible modem is required on each side. 2.3.
M-bus segment M-bus signal converter for a maximum of 250 devices M-bus devices Note Maximum number 1 Type reference WZC-P250 Data Sheet N5365 250* * The SONOHEAT® heat meters with an M-bus module up to V1.06 produce a bus load of 1.5 standard loads. For this reason, this type of meter produces a load of 1.5 Mbus devices on the M-bus. Hence, a maximum of 250/1.5 = 166 SONOHEAT® heat meters with an M-bus module up to V1.06 can be connected to a WZC-P250.
2.6 M-bus repeater WZC-R250 2.6.1 Introduction The M-bus repeater is an amplifier for use in M-bus plants where long bus distances must be covered. 2.6.2 Use The M-bus repeater is for use in plants where extensive bus lines are required, or where a large number of devices need to be connected, e.g. in district heating plants that supply heat to entire sections of towns. 2.6.
3 M-bus devices and Siemeca™ AMR 3.1 Controllers with M-bus 3.1.1 Introduction In district heating systems, the substations for remote operation and monitoring are interconnected across long distances. For that purpose, the • district heating controllers SIGMAGYR® RVD2… • district heating controllers SIGMAGYR® RVP97 (via OCI97 bus interface) are equipped with an M-bus interface. This enables the district heating controllers to be used with any type of M-bus meters on the same bus.
Popcards RVD2… No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Data group (operating page) Description Overview Overview of the plant’s state (faults, limitations, operating state, process data, setpoints, actual values, etc.
No 5 6 7 8 9 11 12 13 14 Data group (operating page) Description Heating circuit 2 Overview of the setting parameters, plant state, setpoints and actual values related to heating circuit 2 DHW Overview of the setting parameters, plant state, setpoints and actual values related to DHW heating Setpoints Overview of all plant values and setpoints IOs Overview of all input and output signals Connection conditions Overview of all district heat-specific settings and limit values Switching programs heating Sett
Type Reference WFH21… WFC21… WHE21* AEW21.2 Product family VOLUTRON®2 VOLUTRON®2 MEMOTRON®2 Pulse adapter WHZ.S0 Pulse converter Data Sheet N5341 N5341 N5351 N5367 N2867 Basic Documentation * Product no longer available, but still supported 3.2.
Type Reference System WTT16 WTX16 WFM26… WFQ26… WMM26… WFN26… WFR26… WMN26… WFH26… WFC26… WMH26… WMC26… WHE26 AEW36.2 3.4.
4 Interconnected systems with zone controllers 4.1 Introduction The functionality of a standard controller is not sufficient to cover the requirements of complex plant. For this reason, several controllers can be interconnected. For detailed information about interconnected systems, refer to the following pieces of documentation: Title LPB – Basic System Data LPB – Basic Engineering Data LPB – System Engineering 4.
Equipment combinations 4.4.1 Makeup of an interconnected system 5361Z20e 4.
4.4.2 Plant example 5361Z21e Example of an interconnected plant with 1 primary controller and 2 zone controllers: M-bus M-bus LPB Primary controller RVD230 Plant type 7–2 Zone controller RVD240 Plant type 1–8 M-bus LPB Zone controller RVD230 Plant type 1–3 Both the primary controller RVD230 and the 2 zone controllers RVD240 and RVD230 are connected to the control center. The 2 zone controllers send their heat demand signals to the primary controller. They require no outside sensor.
5 Engineering 5.1 Introduction This chapter covers fundamentals of engineering. Following is required for the M-bus system, depending on the application: • PC (refer to subsection 2.1.9 "Equipment combinations") • PC software (plant operating software ACS7…, recommended is ACS741 or ACS785, depending on the application, refer to subsection 2.2.2 "Use") • 2 modems or standard null modem cable (refer to section 6.1 "Communication between ACS7… and OZW…") • M-bus central units OZW… (refer to sections 2.
complished through a transparent data channel. For this reason, the ACS7… can also access device data that are not filed in the central unit’s storage. The transparent access to the Siemeca™ AMR devices is always made by accessing the image of the meter data in the WTX16 or WTT16 radio nodes on the M-bus. Direct access to the wireless meters is not possible.
Type of M-bus device Version Remarks OZW10 3.0 Basic credit ® SONOHEAT 2WR4, 2WR5 1.x, 2.x ® SONOGYR WSD… SONOGYR 1) energy ® ® 1) ® 1) MEGATRON 2 M-bus VOLUTRON 2 M-bus ® MEMOTRON 2 WHE21 Number Credit Total 1 47547 47547 M-bus module up to V1.06 –135 M-bus module of V2.
Note The SONOHEAT® heat meters with an M-bus module up to V1.06 produce a bus load of 1.5. A SONOHEAT® heat meter with an M-bus module up to V1.06 corresponds to 1.5 devices: This means that a maximum of 5/1.5 = 3 SONOHEAT® heat meters with an M-bus module up to V1.06 can be connected to an OZW111. All other devices and SONOHEAT® heat meters with an M-bus module of V2.01 or higher correspond to 1 bus load. 1 pulse adapter AEW21.2 with 2 active inputs represents 2 devices.
All bus topologies are permitted (with the exception of ring topology): Star, line, tree and any combinations of them. 4 Line topology Tree topology Star topology Ring topology Using repeaters, an M-bus system can be subdivided into any number of segments in order to increase the rate of transmission or to make system extensions. 5361Z22 Segments 1 2 3 4 2370Z07 Bus topology S2.2 N2 S1.1 N1 S3.1 S2.1 N2 N2 S3.2 N2 N1 M-bus master N2 M-bus repeater Sx.y M-bus segment x.
Primary addressing Within a system, a maximum of 250 primary addresses can be assigned. Normally, the primary addresses are assigned when setting up the M-bus devices. If there are more than 250 devices in a system, secondary addressing must be used. Even the use of repeaters cannot extend the space for primary addressing. Secondary addressing Secondary addressing is an address space extension of primary addressing. The secondary address comprises a total of 8 bytes.
peaters, cable routing and the type of cable. Normally, this is an iterative process where a first approach is made followed by checking. Then, if required, adjustments are made. Procedure 1. Prepare a plant diagram: First, enter all M-bus devices and all distances in the diagram. 2. Select the cable routing: If cable routing is not specified, it should be chosen such that distances will be as short as possible.
5.4.5 Sizing In each M-bus segment, it must be ensured that the required minimum bus voltage is available for all M-bus devices (slaves) and that the required rate of data transmission is observed. Minimum bus voltage 1000 m 350 m 4000 m 0.8 mm 1000 m 3000 m 5000 m 10,000 m 4000 m 5000 m 7000 m 10,000 m 0.8 mm 1.5 mm2 1.5 mm2 1.
l [m] 4000 3500 3000 2500 2000 1500 5361D02 1000 500 240 220 200 180 160 140 120 100 80 60 40 20 10 0 n Cable lengths based on a cable diameter of 0.
5.5 RS-485 port 5.5.1 General • • • • The signal converter is connected to the OZW10 via the RS-485 port The M-bus protocol serves as the transmission protocol at the RS-485 port The only bus topology permitted is line topology The cable used is a twisted 2-core cable 5.5.2 Planning • A maximum of 1 signal converter WZC-P250 or 1 signal converter WZC-P60 can be connected to the OZW10.
6 Communication 6.1 Communication between ACS7… and OZW… . The connection between ACS… and OZW… can be established either directly or via modem. Both the ACS… and the OZW… must be appropriately parameterized. 6.1.1 Direct connection In the case of the direct connection, a null modem is required between M-bus central unit and PC.
6.1.2 Telephone connection 5361Z25 When using the connection via the telephone network, a Hayes-compatible modem is required on both sides. Makeup PC with ACS110, ACS111, ACS900, ACS910 Modem settings ACS On the PC side, all drivers of the modems installed under Windows can be used with ACS7… V3.0 or higher. Modem settings OZW10 Before connecting a modem to the OZW10, the settings for the relevant modem must be made. These settings are made with an ACS connected directly to the OZW10.
The settings can be made with the "Popcard" application on page "Configuration PC / Modem": Analog modem: Default setting Modem Baud rate Modem string for modem initialization Mode string for modem reset Modem string for dialing Modem string for hang up Modem string for modem suffix ^M 2,400 ATE0V0&C1&D2&S0=2^M ATZ^M ATDP ~~~~+++~~~~ATH0^M ELSA 56k / 56k fun 9,600 ATE0V0&C1&D2&S0=2^M ATZ^M ATDP ~~~~+++~~~~ATH0^M ^M U.S.
7.1.1 Specification Bus short-circuit current (master) Idle current (slave) Transmit current (slave) 2,400 Baud V V UMR–12 UM,R–8.2 V ± 42 V 0 0 300 12 24 40 R UM,s @ IM = 0…400 mA US,R @ IS ≤ 1.5 mA ± 21 US,E @ IS ≤ 1.5 mA ± 12 IM,V WZC-P250 / -R250 WZC-P60 IM,K WZC-P250 / -R250 IS,R IS,S WZC-P60 @ US = 21…42 V @ US = 12…42 V 0 0 470 V 500 375 90 530 mA mA mA mA mA mA 130 0.75 11 155 1.2 160 1.5 20 Maximum With WZC-P250 With WZC-P60 2 2 2 2 2 2 300 2,400 ± 1.5 ± 0.
7.4 Note Cable length charts In the following charts, "n" denotes the number of M-bus devices connected to the Mbus segment. The SONOHEAT® heat meters with an M-bus module up to V1.06 produce a bus load of 1.5. This means that a SONOHEAT® heat meter with an M-bus module up to V1.06 corresponds to 1.5 devices. All other devices and SONOHEAT® with an M-bus module of V2.01 or higher correspond to 1 bus load. 5361D01 l [m] n Cable lengths based on a cable diameter of 0.
l [m] 12000 10000 8000 6000 4000 5361D04 2000 240 220 200 180 160 140 120 100 80 60 40 20 10 0 n Cable lengths based on a cross-sectional area of 1.
7.5 Storage space requirements of M-bus devices 7.5.1 General Internally, the OZW10 stores all device data required for the local display and the memory card. Data storage is dynamic. This means that each M-bus device only uses the amount of storage space it needs. Calculation of the maximum number of possible M-bus devices per OZW10 based on the storage space requirement of the connected devices is described in subsection 5.3.1 "M-bus central unit OZW10". With certain types of M-bus devices (e.g.
7.5.3 MEGATRON®2 Measured values Service info Set day values Maximum values Monthly values Monthly values tariff Tariff values 4 5 6 7 8 9 Readout time, fault status Energy and volume Not available Device description, serial number, hours run Temperatures, power, flow rate Setpoints Energy and volume Not available Energy and volume Not available 10 Not available 17 12 0 63 23 28 16 0 225 0 17 12 17 63 16 0 Total 7.5.
7.6 Amount of storage space required by Siemeca™ AMR devices 7.6.1 General The data of the Siemeca™ AMR devices are read out via the M-bus interface of the WTX16 or WTT16 radio node. The radio node on the M-bus has a data image of all radio nodes and meters used in the radio network. The data volumes of the meters transmitted via the M-bus are determined by the application code setting at the radio node on the M-bus.
7.6.3 Heat cost allocators MEMOTRON®2 Standard setting up to V1.1 Standard setting V1.3 or higher User-defined Basic requirement Cum. values, set day values Cum. values, set day values and 1st month values Cum. values, set day values and 2nde month values Credit Application Application code Only one user-defined application code is possible. Combinations are not permitted.
8 Addendum 8.1 Glossary 8.1.1 Type references Type reference 2WR4* / 2WR5 ACS7… ACS700, ACS712, ACS713, ACS715, ACS741, ACS785 AEW21.2 AEW36.
Abbreviation M-bus slave M-bus slave interface M-bus master M-bus master interface M-bus signal converter M-bus repeater M-bus segment M-bus system M-bus central unit OLE OPC SMS 8.1.3 [1] Explanation Meter, controller, I/O or repeater with M-bus slave interface Bus connection for an M-bus slave M-bus central unit with M-bus master interface (e.g. OZW10 with WZC-P250 or OZW111) Bus control and bus power supply for M-bus Signal converter with M-bus master interface (e.g.
8.2.2 Sources Phoenix Contact GmbH & Co. Flachsmarktstrasse 8-28 D-32825 Blomberg Tel. (052 35) 3-00 Fax (052 35) 3-4 12 00 E-Mail: info@phoenixcontact.com Internet: www.phoenixcontact.com Phoenix Contact AG Ringstrasse 26 CH-8317 Tagelswangen Tel. (052) 354 55 55 Fax (052) 354 56 99 E-Mail: phoenixcontact@bluewin.ch Phoenix Contact GmbH Favoritenstrasse 321 A-1108 Wien Tel. (01) 68076 Fax (01) 6887620 E-Mail: info@phoenixcontact.at Internet: www.phoenixcontact.at 8.2.
8.3 Search run of central units OZW10 and OZW111 The OZW10 and OZW111 identify connected M-bus devices with the help of their automatic search run. To match the search behavior of the central units to actual needs, they can be configured with the help of ACS Service or ACS Operation using the "Applications – Popcard" menu on page "Setup M-bus": • Type of addressing on the M-bus (the types of addressing of the M-bus are described in subsection 5.4.
The number of M-bus devices also includes all devices for the Siemeca™ AMR system that are connected to the M-bus via the WTX16 or WTT16 radio nodes: Other radio nodes, MEGATRON®2, VOLUTRON®2, WHE26 or AEW36.2 • Cancel device list: This setting is only available with the OZW10. All entries relating to the devices previously found will be canceled • Update device data: The central unit reads out all data of the devices found The search run made by the central units is as follows: 1.
8.4 Plant documentation, planning the M-bus (examples) 5361P01 Plant location 2.b Bus topology and bus sections 2.a 1.c 2.c 1.b 1.d WZC-R250 1.a 2.d 1.h WZC-P250 2.e 2.f 1.e 1.g 5361Z24 OZW10 1.f List of bus sections Section 1.a 1.b 1.c … … … Length 120 m 100 m 250 m Meter number 5 7 3 Bus address Type of cable Loop resistance Type of Cable cable theoret. 1–5 J-Y(St)Y 4 × 2 × 0.8 36 Ω/km 4.32 Ω 6–12 J-Y(St)Y 2 × 2 × 1.5 24 Ω/km 2.4 Ω 20, 22, 24 J-Y(St)Y 2 × 2 × 0.8 71 Ω/km 17.
Woetzing 71 Woetzing 71 Burgstall 104 Burgstall 104 Burgstall 104 … … … 1.A 1.A 1.A 1.A 1.A 1 2 3 4 5 STV21 STV22 RVD230 2WR5 RVD240 2WR5 AEW21.
8.5.2 Description The billing file of the OZW10 consists of 2 parts: • Part 1: General data set with plant and central unit data • Part 2: Billing data sets of the M-bus devices The billing file is an ASCII hex file. The individual values are separated by tabs. The file can be handled with standard Editors. We recommend to use MS EXCEL. The memory card can be read out directly with the ACS110 or ACS111 via the M-bus central unit or with the help of the ALR30 card reading unit.
Building Technologies HVAC Products M-bus System 8 Addendum Device 02.11.1995 xxx 42 0 8388607 31.12.1999 4.0 xxx 10:05:00 xxx 09:35:00 09:35:00 09:35:00 kWh kWh kWh CEnStVlDim112 ZUhrEvent ZUhrR134 KSWInd352 0 1 0 8388607 32767 127 0 546 CVolStVlVal112 ZFDauer251 01-01.003 KDevAdr292 02.11.
8.5.4 Abbreviations Full name Name in the file Presentation File name Plant number File KKundeNr301 OZW_XXX.BIL (XXX=001…999) Max. 8 digits Production number KFabNr354 Max. 8 digits Software version KSWInd352 Version, revision, max. 2 digits each Date ZDat305 DD.MM.YY Weekday ZWt306 1…7 (Monday…Sunday) Time of day ZUhr306 hh.mm.ss Operating hours CBS304 h, max. 6 digits Fault SFehler350 2 digits Date fault ZDatEvent DD.MM.YY Time of day fault ZUhrEvent hh.mm.
Full name Name in the file Presentation Tariff 1 last set day (energy / volume, value) CvxTar1StLVal193 Max. 8 digits Tariff 1 last set day (energy / volume, unit) CvxTar1StLDim193 Decimal points and symbol if used Tariff 2 last set day (energy / volume, value) CvxTar2StLVal194 Max.
8.6 Data of M-bus devices available on ACS7… ACS7… supports far more than 100 devices and versions with own device descriptions. The list of supported devices is constantly updated. In this document, it is not possible to give all information about the available data of the M-bus device. Information about the individual types of devices and versions can be provided on request. 8.
Error code central unit 42 Severe error, undervoltage 8.7.3 Error code device F:84 Open-circuit return temperature measuring circuit F:94 Short-circuit return temperature measuring circuit F:E4 Wrong power supply module for the selected application F:42 Undervoltage: Check mains voltage or replace battery module Heat meters SONOGYR® WSD… The SONOGYR® WSD heat meter shows pending and stored errors on the display’s top level.
8.7.4 Heat meters MEGATRON®2 WFM / N / Q / R21… (M-bus) The MEGATRON®2 heat meter shows severe errors on the display’s top level "Actual". Minor errors are only displayed on the "Info" level.
8.7.8 Heat cost allocator MEMOTRON®2 WHE21 In the event of fault, the WHE21 heat cost allocator displays Error. Error code central unit Error device 02 Undervoltage Error Undervoltage battery 34 Communication breakdown M--Current error of device not available bus 40 Severe error Error Hardware error or sabotage contact 42 Severe error, undervoltage Error Hardware error or sabotage contact and undervoltage battery 8.7.
Error code central unit Error code device 122 Flow alarm heating circuit 2 123 Flow alarm DHW 171 Alarm contact 180 Connection to heat meter interrupted For other errors, refer to the device description of the relevant controller 8.7.10 District heating controller SIGMAGYR® RVP97 The RVP97 district heating controller does not display general errors. Sensor errors are assigned directly to the relevant sensor values. Error codes are made available via the ACT97 tool.
Radio nodes WTX16 and WTT16 Error code central unit 02 Undervoltage 07 Error operating conditions 10 Communication error subsystem 34 Communication breakdown M-bus 43 Severe error, hardware error 42*, 49* 50 Severe error, communication breakdown subsystem 42* Error code device EA21 Main battery too weak EA22 Backup battery too weak EA20 Parameter outside tolerances EA30 Tolerance error of some other system device EA31 Primary address conflict (address assigned twice) EA34 Clock tolerance between 2 n
Error code central unit 50 Severe error, communication breakdown subsystem 41*, 42*, 45* Error code device Error Continuous communication breakdown between radio node on the M-bus and meter * With OZW10 V4.0, these error codes are produced by mistake AEW36.
Error code central unit 74 92 97 98 8.7.14 Alarm input 4 Wrong number of meters set: During a device search run, fewer devices than the number set have responded. Check setting. Check bus connections of the M-bus devices and their settings. Check M-bus cable. List of meters full: A maximum of 750 M-bus devices can be connected to the central unit. Delete the device list prior to making the search run. If the error keeps recurring, the plant requires additional central units.
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Index A abbreviations in billing file ........................................ 74 accessories OZW10................................................. 30 ACS alarm................................................................ 18 ACS batchjob ........................................................... 21 ACS operation.......................................................... 11 ACS service ............................................................. 23 ACS7… .................................................
I idle current................................................................58 interconnected systems with zone controllers..........42 ISDN...................................................................56, 57 printer output ........................................................... 20 protection against transients.................. 50, 54, 66, 67 pulse adapter AEW21.2............................... 26, 31, 39 pulse adapter AEW36.2..................................... 26, 31 L link cable ..........
use M-bus .................................................................. 8 use M-bus central unit OZW10 ................................ 26 use M-bus-central unit OZW111 .............................. 31 use meters ............................................................... 40 use of interconnected systems ................................ 42 use RVD2… controllers ........................................... 37 use RVP97 controllers ............................................. 37 W WHZ.S0...........
Building Technologies HVAC Products M-bus System Index CE1P5361en 08.02.
Revision history The following changes have been made against edition 2.0: Section / subsection 2.1.4 2.1.9 2.1.9 2.1.10 2.1.10 8.5.4 Change New screenshots for Alarm and System report Table “Device-specific credit” actualized Table “PC hardware” actualized CMD.01 replaced by CMD.02 Terminology actualized CPQMwMaxVal169: “value“ added 89/90 Building Technologies HVAC Products M-bus System Revision history CE1P5361en 08.02.
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