NK8237 MP4.
Table of Contents About this document.........................................................................................................4 1 Safety regulations ..............................................................................................7 1.1 Country-specific standards...................................................................................7 1.2 Assembly and installation.....................................................................................7 1.
About this document About this document Purpose This manual is intended as a guide to the Modbus interface provided by the NK8237 Gateway for the fire control units of FS20/FS720 families. The manual presents the application-level information of this interface indicating the fire objects mapping, and describes the corresponding Modbus registry structure and the applicable Modbus functions.
About this document 2. Click Search to start. 3. In the resulting area on the right, click on Contents link to show the list of search results. For more information such as Siemens news and announcements, visit the STEP Web portal at: https://workspace.sbt.siemens.com/content/00001123/default.aspx Operational and safety regulations Before groups of persons begin work on the system, they must have read and understood the Safety Regulations [➙ 7] section in this manual.
About this document Documentation Conventions The following table lists conventions to help you use this document in a quick and efficient manner. Convention Examples Numbered Lists (1, 2, 3…) indicate a procedure with sequential steps. 1. Turn OFF power to the field panel. 2. Disconnect the power cord. 3. Open the cabinet. One-step procedures are indicated by a bullet point. Conditions that you must complete or must be met before beginning a procedure are designated with a ⊳.
Safety regulations Country-specific standards 1 1 Safety regulations This section describes the danger levels and the relevant safety regulations applicable to the use of the products described in this manual. Please read the following work instructions as well as the preceding section About this document thoroughly before beginning any work. 1.1 Country-specific standards Siemens products are developed and produced in compliance with the relevant international and European safety standards.
1 Safety regulations Modifications to system design and products 1.5 Modifications to system design and products Modifications to a system or to individual products may cause faults or malfunctioning. Please request written approval from Siemens Building Technologies, FS-DMS, and the relevant authorities concerning intended system modifications and system extensions. 8 Building Technologies Fire Safety & Security Products A6V10316242_a_en 29.06.
NK8237 Modbus Interface Specifications NK8237 Modbus 2 2 NK8237 Modbus Interface Specifications The NK8237 gateway enables Modbus master/client stations to access the FS20/FS720 fire control units for acquiring the status information. The NK8237 gateway also allows for control commands to be transmitted from the Modbus master/client stations to the fire system. A specific agreement with Siemens is required for this type of functions.
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Function code Function Applicable NK8237 tables Notes Synchronization command registers, to perform control actions, and date & time registers, thus synchronizing the NK8237 clock. 0x07 Read Exception Status - Serial Line only 0x08 Diagnostics - Serial Line only 0x0B Get Comm Event Counter - Serial Line only 0x11 Report Slave ID - Serial Line only 0x2B / 0x0E Read Device ID - General NK8237 info.
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model 2 NOTE: All addressing starts with offset 0. 2.2.1.1 Customizing Modbus Maps The following illustrates the overall map customization procedure. 1. Start the Composer tool and open the NK8237 project. The project tree displays in the Composer environment. 2. In the Modbus station node, select the Host tab and modify the Modbus Base Address values as needed. Make sure to define a consistent address scheme and avoid any conflicts. 3.
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model The following fields (columns) are present in the CSV file: SubsystemId Identifier of the subsystem in the Composer project, and used during file re-import. It cannot be modified. NodeId Identifier of the node in the Composer project, and used during file re-import. It cannot be modified. WARNING Composer subsystem and node IDs are used during the re-import to identify the object positions.
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model 2 CommandRange Starting address of the set of Modbus Holding Registers associated to the command objects. Modification of this fields is ignored in the re-import. Note however that the base addresses for the command tables can be modified in the Composer configuration. For each object, the actual Modbus register address is determined by summing the Modbus BaseAddress and the ModbusAddress. ModbusAddress Object offset address.
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model – As many as 525 data change flags (33 word registers) reporting any modifications in the register area (the complete range of 65536 registers is monitored). Status tables These are word input registers reporting the conditions of all the mapped objects.
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model 2 Command tables The output command tables (read/write holding registers) enables Modbus master/client stations to initiate control commands to the fire control panels. Note that, depending on a configuration setting, certain commands may not be available.
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Bit Information Notes about the conditions corresponding to the “1” state (bit active) test mode 7 Detection off / test One or more detection devices have been excluded or set in test mode 8 Emergency power Due to missing or faulty mains supply, the panel is operating in battery mode. The delay of the event generation is configurable in the panel (00:00:00 02:00:00).
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Word / Bit Information Notes 0/0 Registry 0-124 (00h-7Ch) Flag 0 0/1 Registry 125-249 (7Dh-F9h) Flag 1 … 0 / 15 2 Flags 2 to 14 (Word register 0) Registry 1875-1999 (0753h07CFh) … Flag 15 Flags 16 to 522 (Word registers 1 to 32) 32 / 11 Registry 65375-65499 (FF5FFFDBh) Flag 523 32 / 12 Registry 65500-65535 (FFDCFFFFh) Flag 524 DataChange (Input registers, default base address: 1020) Date and Time Three holding (read/write)
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Area Bit Information Notes 0 (lsb) Non-default mode Abnormal mode such as higher detection sensitivity 1-3 - Not used 4 WalkTest Walktest active 5 Manned Set in day (attended) mode 6 Test Set in test mode 7 Off Excluded 8 Non-default value Abnormal condition such as alarm output(s) disabled or other states resulting in a reduced safety 9-15 - Not used WT_Area (Input registers, default base address: 6500) Section
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model 2 * If the Channel Delegation option is configured, the Pre-alarm and Alarm events are on the element level (not the Zone level).
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Bit Information Notes 8 Non-default value Abnormal condition resulting in a reduced safety 9-10 - Not used 11 Test active Activated for test 12 - Not used 13 Fault Faulty 14 - Not used 15 Alarm Activated / Alarmed WT_CtrlChan (Input registers, default base address: 4800) Hardware object Bit Information Notes 0 (lsb) Non-default mode Abnormal mode condition 1-6 - Not used 7 Off Excluded 8 Non-default val
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model 2 The corresponding data structures, illustrated here below, are packed in the register areas defined at configuration time. The word input registers contain 4 zones and 8 elements each.
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Table Information Related object type Default base address Detection elements 12000 channel) faulty BT_ Detection element (logical LogChanModeOff&Test channel) in test mode or excluded BT_CtrlAlarm&Active Control alarmed or activated Controls 13000 BT_CtrlNDV&Fault Control faulty or in other Controls 14000 BT_CtrlModeOff&Test Control in test mode or excluded Controls 15000 BT_CtrlChanActive Control element (control Co
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model 2 Global panel acknowledgement and reset State Command (dec) New state after a successful command execution Ack required 12 Panel acknowledged Reset required 14 Panel reset CMDT_FC20 (Holding register, default base address 25000) Area manned/unmanned: set day or night mode State Command (dec) New state after a successful command execution Unmanned 3 Manned (day mode) Manned 4 Unmanned (night mode) CMDT_Area (Holding registe
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Control element (control channel) on/off: include/exclude the actuator State Command (dec) New state after a successful command execution Off 5 On On 6 Off CMDT_CtrlChan (Holding register, default base address 29000) 2.2.2.6 Status Tables (NK8237 Unit) The NK8237 status tables include two types of input word registers applied to a number of objects.
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Field Device Modbus slave address NK8237 4 FC20 Panel 1 5 FC20 Panel 2 6 2 Field Devices: example including two FC20 fire panels Modbus Table Modbus Base Address Register DateTime 1060 Holding register DataChange 1020 Input register LifeCheck 1010 Input register WT_FC20 Syn 1000 Input register WT_Zone 1500 Input register WT_LogChan 2500 Input register WT_Ctrl 3500 Input register WT_CtrlChan 4800 Input registe
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Modbus Table Modbus Base Address Register BT_CtrlChanFault 17000 Discrete input BT_CtrlChanModeOff&Te 18000 Discrete input st BT_HWObjAlarm 19000 Discrete input BT_HWObjFault 20000 Discrete input BT_PowerSupply 32000 Discrete input BT_EmergencyPower 33000 Discrete input CMDT_FC20 25000 Holding register CMDT_Zone 26000 Holding register CMDT_LogChan 27000 Holding register CMDT_Ctrl 28000 Holding register CMDT_C
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model 2 WT_FC20 Sinteso™ FS20: FC2020 FC2030 FC2040 FC2060 FT20 Cerberus PRO™ FS720: FC722 FC724 FC726 FT724 WT_Zone Automatic Zone Single Alarm Subsystem zone Single Exting discharged zone Single extinguishing prealarm zone Single gas alarm zone Single gas warning zone Multiple automatic zone (Holland) sprinkler zone Multi Dependency Zone Sprinkler Zone Manual FSE Zone
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model Gas channel (ChannelLogSensorDaGasElem; ChannelPhysSensorP2GasElem) ByPassable Input (ChannelLogInputAaConfirmationElem; ChannelLogInputAaFaultElem; ChannelLogInputAaSupervisionElem; ChannelLogInputFireElem; ChannelLogInputSprinklerElem; ChannelLogEvacElem; ChannelLogInputSprinkler1Elem; ChannelLogInputSprinkler2Elem) Non Bypassable Input (ChannelLogInputBlockedElem; ChannelLogInputDischargedElem; ChannelLogInputFaultElem; Channe
NK8237 Modbus Interface Specifications NK8237 Modbus Data Model 2 WT_Area Area(AreaElem) Station Area WT_HWObj Modules: Module Power Supply Module Evacuation Module Fba Module IO Module Vds Module P2 Module FCI Module Collective Module Ethernet Module MS9 ModuleReleasing Module CPU Module Rt Card Sub-Modules: Submodule P2 Element Submodule Communication Submodule Degrade Element Submodule License Element Submodule Collective
2 NK8237 Modbus Interface Specifications NK8237 Modbus Data Model 2.2.4 NK8237 Objects This section lists the NK8237 gateway objects and the corresponding types in the NK8237 Modbus data model (refer to the Register Map section [➙ 13]).
Issued by Siemens Switzerland Ltd Infrastructure & Cities Sector Building Technologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24 www.siemens.com/buildingtechnologies Document ID A6V10316242_a_en Edition 29.06.2012 © 2012 Copyright Siemens Switzerland Ltd Technical specifications and availability subject to change without notice.
