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HPE-MRBN –
FW4.01
Integration of BACnet MS/TP conforming devices in to Modbus RTU based systems. Up to 247 BACnet
MS/TP devices may be connected to the gateway for read access of up to 250 BACnet data objects
Typical Applications
Modbus RTU 485 network integration of BACnet MS/TP devices:
HVAC Controllers
PMAC770 electricity meters (c/w BACnet module)
Sontex SC531 chilled/hot water energy integrators (c/w BACnet module)
Belimo energy Valves *
* Belimo energy valves should have dedicated gateway, with System Vendor ID# 423 (SV=423) set in the gateway.
Other BACnet devices may share a gateway, with default SV=0 setting.
Feature Summary
Modbus RTU RS485 slave port (BMS port)
BACnet MS/TP master-slave/token-passing (Sub-bus port)
User customised BACnet object data based
Modbus Long Integer and IEEE Floating Point register address ranges
Smart-polling of BACnet objects (only actively polled when active on the Modbus BMS side)
HRW Limited
BACnet MS/TP Gateway to Modbus RTU 485
Unit E, 11/F, Sun Ying Industrial Centre
9 Tin Wan Close, Tin Wan
Hong Kong
Ph +852 2546 7402
Fax +852 2546 7403
www.hrw.hk
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Table of Contents
Related Manuals for HRW BACnet HPE-MRBN
Summary of Contents for HRW BACnet HPE-MRBN
- Page 1 Modbus Long Integer and IEEE Floating Point register address ranges Smart-polling of BACnet objects (only actively polled when active on the Modbus BMS side) HRW Limited Unit E, 11/F, Sun Ying Industrial Centre Ph +852 2546 7402 9 Tin Wan Close, Tin Wan...
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Page 2: Table Of Contents
ORDERING INFORMATION ..........................14 HPE-MRBN ................................ 14 ............................... 14 CCESSORIES HP_MR S ......................... 14 THER ERIES EVICES HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice Page 2 of 15... -
Page 3: Operation Overview
To relinquish back to Null send a value of 17 to register 2004 (2004=17) We recommend that the connected BACnet devices have all objects in the relinquished state HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice Page 3 of 15... -
Page 4: Bacnet Network Gateway
Separately the BACnet network baud rate and Maximum Master value must be set. The gtaeway is generally set as being Device Instance 0. HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice Page 4 of 15... -
Page 5: Terminal Mode
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: 9600 ‘Settings’ ASCII Setup: HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice Page 5 of 15... -
Page 6: Additional Settings
To break in to terminal mode set Caps Lock on and hold the ‘T’ character key continuously (TTTTTTT…). After five (5) T’s have been sent to the device it will switch to terminal mode. HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice... -
Page 7: Modbus Configration Commands
Auto X after 240sec without key entry. After Exit HyperTerminal no longer eXit unplug the HPECOM cable to allow communication active network communication to take place HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice Page 7 of 15... -
Page 8: Bacnet Configuration Commands
Auto X after 240sec without key entry. After Exit HyperTerminal no longer eXit unplug the HPECOM cable to allow communication active network communication to take place HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice Page 8 of 15... -
Page 9: Data Base Mapping Tool
Although all configuration can be typed directly in to the gateway via the terminal program, by email request or by download from www.hrw.hk, Resources/Tools, you can use our the HPE-MRBN mapping Tool for creation of a table of data base settings which can be downloaded to the gateway as a text file (*.txt). -
Page 10: Terminal Operation
While in the ‘Ready’ state, navigate to the text file path via the Transfer / Send Text File dialogue: HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice Page 10 of 15... -
Page 11: Enable Bacnet Ms/Tp Port
4) Enter TTTTTTT to go back in to terminal mode 5) Enter D to invoke Diagnostic display (display of true scaled values, as opposed to raw data) HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice... -
Page 12: Installation & Commissioning
24Vac power supplies cannot be guaranteed, we recommend that a repeater be used to provide isolation of the sections of the network having differing earth potential HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice... -
Page 13: Connections
If using HDA0002 DIN rail adapter brackets the overall depth from the gear plate to the front surface of the device is 45.5mm HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice Page 13 of 15... -
Page 14: Technical Data
Modbus gateway for SMA inverter devices, 250 point, 24Vac Also available are gateways for Modbus RTU devices in to BACnet MS/TP and P1 FLN based networks HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice... - Page 15 Notes: HRW HPE-MRBN V401 Manual 170912 E. & O. E. / Subject to change without notice Page 15 of 15...
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