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HRW Limited 

Unit E, 11/F, Sun Ying Industrial Centre 

Ph +852 2546 7402

 

9 Tin Wan Close, Tin Wan 

Fax +852 2546 7403

 

Hong Kong 

www.hrw.hk

 

 
 

 
 

HPE-BNMBUS – 

M-Bus (EN1434-3) Gateway to BACnet MS/TP

 

FW 4.01, from March, 2018 

 
250 point

 

integration of M-Bus (EN1434-3) conforming devices in to BACnet MS/TP networks. Up to 40 

M-Bus devices may be connected to the gateway for read access of up to 250 M-Bus data-points 
 

Typical Applications

 

 
BACnet MS/TP network integration of M-Bus devices: 
 

  Hot water or chilled water energy meters (BTU meters) 

  Water meters 

  Electricity meters 

  Pulse converters 

 

Feature Summary

 

 

  Integrated M-Bus network driver, up to 40 M-Bus devices 

  Primary or Secondary addressing 

  Diagnostic function for M-Bus point DIF/VIF identification 

  With or without common ‘DVIF’ data point assigned to each device address configuration point 

  Beyond the device address point DVIF assignment, independent point configuration per-device   

  M-Bus point DIF-only scan option possible (independent of point VIF value) 

  Settable network scan period (for suitable battery powered meters, battery conservation) 

 

Default M-Bus Settings

 

 
The gateway may be configured for any M-Bus device. As an initial guide (example) the factory settings 
include meter and point addressing for the Sontex SuperCal 531 energy integrator. Ultimately the user 
must configure the meter and point data base to suit the specific devices connected in the M-Bus 
network. 
 
Sontex SC531 example points: 
 

  Primary address 0 

  Common DVIF for Energy (kWh, assigned to the Primary address point, point 4 / AV4) 

  Volume at point 5 (AV5) 

  Flow temperature at point 6 (AV6) 

  Return temperature at point 7 (AV7) 

  Power (kW) at point 8 (AV8) 

  Flow rate (m

3

/h) at point 9 (AV9)  

 
 
 
 
 
 
 
 

Summary of Contents for HPE-BNMBUS

Page 1: ...th or without common DVIF data point assigned to each device address configuration point Beyond the device address point DVIF assignment independent point configuration per device M Bus point DIF only scan option possible independent of point VIF value Settable network scan period for suitable battery powered meters battery conservation Default M Bus Settings The gateway may be configured for any ...

Page 2: ... SEARCH 8 DATA POINT ADDRESS 8 EXAMPLE RSP PAGES 9 GATEWAY DATA BASE STRUCTURE 10 GATEWAY POINT TYPES 10 COMMON DVIF 10 GATEWAY POINT STRUCTURE 11 COMMON DVIF 11 METER ADDRESS M 11 Primary Addressing 11 Secondary Addressing 12 METER ADDRESS A 12 DATA POINT D 12 EXTENSION POINT X 15 TIME SCANNED POINT T 15 DATA BASE MAPPING TOOL 16 TERMINAL OPERATION 16 DOWNLOAD TEXT FILE 17 ENABLE M BUS PORT 18 SC...

Page 3: ...ured in the order that it appears in the manufacturer s point table or in the order that they appear in the Diagnostic response The gateway data base consists of 1 One data point the DVIF which should be the first M Bus user required data point as it appears in the data sequence The data returned according to the DVIF point address may be assigned to any AV that is configured as a meter addressing...

Page 4: ... terminal mode between the device and a PC running a terminal program HyperTerminal is recommended HyperTerminal Settings For successful communication between HyperTerminal and the device initial Properties setup of HyperTerminal should be as per the screen prints below Connect to Comm Configuration Settings General Settings ASCII Setup 9600 ...

Page 5: ...operation Saving HyperTerminal Settings For ease of connection it is recommended to save the HyperTerminal setup for each baud rate you may wish to use with an easily recognised configuration name For example HPECOM 24 2400 HPECOM 48 4800 HPECOM 96 9600 HPECOM 19 2 19200 HPECOM 38 4 38400 HPECOM 57 6 57600 Break in to Terminal Mode When HyperTerminal is running and the HPECOM cable is connected to...

Page 6: ... changing comm speed it will be necessary to reconnect with HyperTerminal at the new comm speed to save write the change Set Maximum Master address MM 1 127 Highest Master device address on the network is registered Next address searching limited to MM address Set Sys Vendor ID SysVid SV 0 255 System vendor specific features may be available SV 0 applies generic BACnet operation If an entered ID i...

Page 7: ...d of a text file with new data base will delete an old existing data base as a matter of course Priority Release all points to NULL R All points are Released to NULL priority 17 will be displayed at the extreme right of each data point configuration line to signify NULL priority Priority Release individual point to NULL R 4 253 Specified point is Released to NULL priority 17 will be displayed at t...

Page 8: ...ress Each data point in the device pages consists of DIF Data Information Field which indicates the data type DEC HEX BIN number of data bytes and one of more VIF Variable Information Field which indicate information such as decimal placement In the gateway the DIF must be specified as minimum criteria to identify the data point required to be read The VIF s up to two may also need to be specified...

Page 9: ...he Sontex SuperCal 531 energy integrator SC531 DIF 04 VIF 6D VIF Choice VIF Choice DIF 04 DIF 04 These VIF choices are fixed at one only specific to the meter size and units Check the meter LCD to verify units and resolution to be able to select the correct VIF setting or analyse gateway Diagnostic reading display to identify which VIF is existing ...

Page 10: ...require an X point added for every additional 4 data bytes Timed Scan point _T When appended to M A D or X types above indicates that the point will be periodically scanned according to the TS setting recommended Common DVIF To enable the meter addressing point to also act as a data gathering point there is a common global point configuration available the DVIF the read value of which will be appl...

Page 11: ...then this configuration can be simplified DVIF 4 0 0 0 If however the time date is not required but energy with 1kWh resolution is applicable for all meters so suitable as a common data point for all AV s used for meter addressing then DVIF 4 6 0 0 The inclusion of the VIF 06 in the above configuration will ensure the gateway skips over the earlier data point with DIF 04 the time date data point w...

Page 12: ... within a meter are built up in sequence following a meter s addressing point when more data points are required in addition to the data point retrieved via the DVIF address which is attached to the meter addressing AV These data point AV s are constructed similar to the DVIF except they have end code D so that they are configured such that they are read from the meter address preceding them If we...

Page 13: ... 0 4 FF FF F3 21 MT 5 4 0 0 0 DT In this case AV4 will return the energy value related to the DVIF setting skipping the previous data point with DIF 04 time date because it includes VIF 06 in it s configuration then volume is readout based on DIF only because it is the next data point with DIF 04 immediately after the energy data point Now an example having a second meter on the network Secondary ...

Page 14: ... 0 0 DT volume 6 5 0 0 0 DT high temperature 7 5 0 0 0 DT low temperature 8 5 0 0 0 DT flow rate 9 5 0 0 0 DT power 10 FF FF F6 42 MT Meter Addressing point with kWh from DVIF setting at it s AV 11 4 0 0 0 DT volume 12 5 3E 0 0 DT flow rate with VIF included 13 5 0 0 0 DT power One more example with differing VIF for energy so using A end code applied to the second meter DVIF 4 6 0 0 kWh for M dat...

Page 15: ...nergy data has 6 bytes of data 1 X data point needed and the volume data has 10 bytes 2 X data points needed DVIF 4 6 0 0 4 FF FF F3 21 MT 5 0 0 0 0 XT 6 4 0 0 0 DT 7 0 0 0 0 XT 8 0 0 0 0 XT Only AV4 energy and AV6 volume need be read by the BMS as the gateway will automatically calculate the final data point values including the related X point values Time Scanned Point T The end Code T sets that...

Page 16: ... which can be downloaded to the gateway as a text file txt Copy the Point Configuration Text from the tool to Notepad text file and save for download to the gateway Terminal Operation After entering terminal mode with TTTTTTTT you will initially see the factory default settings Make settings such as BACnet node baud rate DI and MM directly by entering the required settings Note that after changing...

Page 17: ... dialogue After download of the text file the display will indicate a check between lines received and lines expected indicated by the 10000 n line count generated in the mapping tool configuration table If the lines check is correct then the new data base is loaded otherwise the old data base will be reinstalled automatically The download above is one meter using Primary address 0 DVIF 04 06 0 0 ...

Page 18: ...lay to refresh with read values this may take some time if the network contains many M Bus devices and data points After refresh instead of U for unread the points now indicate S to indicate Scanned AV4 2 kWh AV5 0 254 m3 AV6 high temperature in IEEE coding AV7 low temperature in IEEE coding AV8 flow rate no flow present AV9 power no power due to no flow To see the IEEE floating point values tempe...

Page 19: ...6D VIF Data4 3B 14 65 12 Correct DIF incorrect VIF 04 DIF 06 VIF 02 ReadData4 X0 02 00 00 00 OK Read value 2 X0 no eXtension points Looking for DVIF 04 Next with DIF 04 the volume 68 4B 4B 68 08 00 72 50 15 28 08 EE 4D 0D 04 7A 00 00 00 04 DIF 13 VIF FE ReadData4 X0 FE 00 00 00 OK FE HEX 254 Looking for DVIF 05 Next with DIF 05 High temperature 68 4B 4B 68 08 00 72 50 15 28 08 EE 4D 0D 04 7A 00 00...

Page 20: ...the lower side and communications ports on the upper side Each 24Vac power supply transformer should have the neutral 24Vac N connection grounded at the electrical panel earth connection to ensure the device grounding is at the same potential as the network master s grounding Where more than one device is connected to a common transformer ensure that the 24Vac phasing is the same to each device A ...

Page 21: ...onnector between and ground and connect to the device Communication can be verified by flashing of the red comms LED adjacent the 3 terminal RS485 connector Frequency of comms LED flash is baud rate dependant At higher baud rates the LED flash may not be obvious the LED appearing to be continuously on Where a network runs between buildings and zero earth potential difference between individual pan...

Page 22: ... Bus The maximum distance between a slave and the repeater gateway is 350 m This length corresponds to a cable resistance of up to 29Ω This distance applies for the standard configuration having Baud rates between 300 and 9600 Baud and a maximum of 250 slaves The maximum distance can be increased by limiting the Baud rate and using fewer slaves but the bus voltage in the Space state must at no poi...

Page 23: ...ontrol panel mounting Standard package 40 units per carton Accessories HDA0002 DIN rail adapter brackets factory fitted HPECOMU Configuration cable USB RJ11 Other HP_BN Series Devices HPC0662BN Universal Controller 12 Point BACnet MS TP 24Vac HPC8884BN Universal Controller 28 Point BACnet MS TP 24Vac HPD0440BNMR Network HMI Universal Ctrl Scheduler Modbus RTU gateway 8 Point BACnet MS TP 24Vac HPD...

Page 24: ...HRW HPE BNMBUS V401 Manual 180307 E O E Subject to change without notice Page 24 of 24 Notes ...

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