BACnet/IP to 4 Utility Meters (pulse)

B6070


Collections: BACnet, Metering

Category: B6070, BACnet, pulse meter

Type: BACnet


  • The B6070 provides a BACnet/IP interface for commodity/utility flow meters that have a pulse output. This allows integrators to use simple meters. The B6070 meter interface accepts pulse inputs from four meters and portrays each channel as a set of BACnet objects.

    The B6070 is enclosed in a metal case that can be mounted standalone, in a 1U rack shelf or on a DIN rail. It is powered by 9 VDC at 1A via a 5.0/2.1mm barrel connector which can be supplied from an included external 120 VAC power supply. An optional international power supply with 50-60Hz and 100-240 VAC support is available. The unit has one ten-pin inline Euro-style 3.05mm plug connector for pulse channel inputs and one Ethernet 10/100 RJ45 connector.

    There are (4) pulse input channels. The pulse input channels are each optically isolated. Each channel is self-powered through a DC-DC converter. Each channel can tolerate one stray potential/ground. This is optimal for flow meters with dry contact closure outputs, and which might have stray grounds somewhere in their output circuits (water meters often have such stray grounds).

    The Ethernet port uses a standard shielded RJ45 connector with integral LEDs. Connection status can quickly be ascertained from the Link and Activity LEDs on each interface.

    An embedded web server allows for commissioning, configuration and troubleshooting via a standard web browser. A power LED is present along with the LEDs for interface status on each interface.

    The meter pulse counts are stored to flash memory. When the device senses a loss of power it will immediately write the latest pulse count so that data is not lost. This pulse value is made available to the BACnet network.

    Scale factors are able to be selected during setup so that the appropriate scaled usage data (gas, water, electrical) is also available as a BACnet analog object.

  • Flexible connections:

    • BACnet/IP
    • (4) Pulse channels
    • Pulse inputs optically isolated
    • Each channel can tolerate one stray potential/ground

    IP network support:

    • Web server for commissioning and troubleshooting
    • Status page for diagnostics
    • Secure login to web configuration and status interfaces
    • BACnet Device Object support

    Standard Communications:

    • 10/100 Mbps Ethernet.
    • Convenient Installation.
    • 9VDC at 1A input.
    • Standard power supply included allows use of 60Hz 120 VAC mains
    • Available 1U server rack mount shelf
    • Available DIN rail mounting bracket.
  • Specifications:

    • Power: 100-120VAC at under 100mA, DC at 9V at 10W
    • Operating temperatures: 0 to 40ºC
    • Storage temperature: -20 to 80ºC
    • Dimensions: 102 x 127 x 26 mm (4.0 x 5.0 x 1.0 inches) [without feet]
    • Relative Humidity: 0-90% @40ºC non condensing
    • Physical protection: IP41 DIN EN 60529 (VDE 0470) (no entry of probe, drip waterproof)
    • System LED: power as labelled  ON=OK

    Ethernet::

    • IEEE 802.3 10/100 Mbps
    • 10BaseT, 100BaseT, RJ45 connector
    • Half/Full duplex
    • 100m (max) CAT5 cable length.
    • LEDs: link and activity as labelled.

    Regulatory Compliance:

    • FCC and CE mark pending
    • ROHS components used throughout

    Options:

    • International power supply.
    • DIN rail mounting kit.
    • Rack mounting kit.
    • Wall mounting plate.

    Applications: - see AppNotes

  • Field I/O to pulse meters using a TCP/IP network

    (Collecting pulse outputs from devices using a BACnet/IP Collection Client Computer)

    Generally pulse output devices have documentation which indicates how many pulse for how much flow. And one can use various methods to get the calibration factors.

    Then one wants to collecting the pulses in an ongoing fashion.

    With BACnet client software and a Cimetrics B6070 four channel pulse collection device, one can accomplish this connectivity.

    The BACnet/IP port on the B6070 connects to the network Ethernet/TCPIP port using a standard CAT5 cable. The pulse input I/O connects to the target pulse output devices ( this can be almost any cable pair shorter than about 20 feet).

    Perhaps the most important feature of the B6070 is its non-volatile storage of pulses it sees. While it is powered on it will always get pulses and never lose them, even through power outages. This is unlike most digital IO on control system modules. They can certainly count pulses, but, one way or another, often lose counts at power down or at times when their program is reloaded. In fact with a B6070 one cannot reset the pulse count short of returning the B6070 to the factory. The counts are stored in 32bit non-volatile registers and in most normal applications, there is little danger of roll-over during the devices lifetime.

    The B6070 is best at accepting dry contact closures. These can be from relays, or KYZ outputs on meters or reed switches or others. The pulse capture frequency range is from DC to 50Hz. The inputs can sense pulses as short as 10 milliseconds allowing duty cycles of down to ten percent at maximum frequency. The inputs are optically isolated and internally excited with DC-DC converters. This allows one spurious ground/potential to be present in any contact pulse source. Contact chatter is compensated for in both optical isolation hardware and software sensing.

    The B6070 can be powered from any 9VDC, 300mA+ source (one possibility is to use a special non-communication USB to 9VDC adapter, another is to use a 802.3af Power over Ethernet injector, and still another is to use the included 9VDC power supply).

    The B6070 is setup using its embedded webpages. The scale factors and pulse offsets can entered to get the desired BACnet Analog Value portrayal of the devices.


    Commissioning pulse meters using a PC/Laptop

    (Commissioning a pulse output device using a BACnet/IP Commissioning Computer)

    Generally pulse output devices have documentation which indicates how many pulse for how much flow. But sometimes (actually- often) one is confronted by a device where the scale factors for pulse to flow translation are not evident.

    To commission pulse devices one has generally been forced to appeal to documentation or structural analysis of the device. No one really makes a good software application for analyzing pulse rates. But with BACnet client software and a Cimetrics B6070 four channel pulse collection device, one can accomplish this connectivity.

    The BACnet/IP port on the B6070 connects to the PC’s Ethernet/TCPIP port using a standard CAT5 cable. The pulse input I/O connects to the target pulse output device (this can be almost any cable pair shorter than about 20 feet).

    The B6070 is best at accepting dry contact closures. These can be from relays, or KYZ outputs on meters or reed switches or others. The pulse capture frequency range is from DC to 50Hz. The inputs can sense pulses as short as 10 milliseconds allowing duty cycles of down to ten percent at maximum frequency. The inputs are optically isolated and internally excited with DC-DC converters. This allows one spurious ground/potential to be present in any contact pulse source. Contact chatter is compensated for in both optical isolation hardware and software sensing.

    The B6070 can be powered from any 9VDC, 300mA+ source (one possibility is to use a special non-communication USB to 9VDC adapter, another is to use a 802.3af Power over Ethernet injector, and still another is to use the included 9VDC power supply).

    The B6070 is setup using its embedded webpages. The scale factors and pulse offsets can then be manipulated until one understands the nature of the pulse output from the device.

  • Supported meters are:

    • Neptune water meters
    • Sensus water meters
    • Badger water meters
    • American gas meters
    • AMCO gas meters
    • Singer gas meters
    • Schlumberger water meters
    • Emco liquid flow meters
    • Emco gas flow meters
    • Emco steam flow meters
    • Danfoss flow meters
    • Siemens Milltronics flowmeters
    • Kessler-Ellis (KEP) flow computers
    • Omega flow computers
    • Onicon flow computers
    • meters with RIOTronics pulse output systems
    • meters with Spirax/Sarco sensor head
    • meters with Yokogawa sensor heads

Product Q&A

Ask a Question
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Q: How do I use the U+4 with a BACnet client?

A: The U+4 hardware is an intelligent USB to fieldbus interface. This allows you to use your PC's USB port to connect to an MSTP (RS485) network. The U+4 (along with a BACnet client like the Cimetrics BACnet Explorer) can now communicate with a BACnet/MSTP network to write and read values.

The following needs to be done for a connection;

- In your LAN properties, select your NIC interface and get into Properties | uncheck the Cimetrics BACstac protocol

- Install the driver for the U+4 on your PC

- Plug the device into your PC (In the USB port).Once the U+4 is plugged into the PC in the USB slot, this will add an extra Local Area Connection in your Network Places that corresponds to the U+4. In order to configure settings, you would need to select this Local Area Connection.

Once you are in the Local Area Connection, RT Click | Properties |Configure | Advanced, you will see all the options given below. Please configure according to your use.


Card Speed:

Select needed Baud rate(in the range from 1200 to 115200 bps) from the list

Filter:

-"Directed BACnet NPDU only" - to receive only directed or Broadcast NPDU. (accepted by any BACstac version). MS/TP information is absent.

Node Address:

Set address of this node in the range [0-254]. IMPORTANT Note: Master node must be in the range [0-Max_master]

Node Type:

Select "Master Node".

Master Mode takes part in token passing and is needed for the BACstac. In this mode, you would be able to completely discover the MS/TP network by using the BACnet Explorer.


Max_info_frames[1-10]:

Leave at default settings.

Max_master[1-127]:

Leave this at the default settings.


Once the above settings are done, you should be able to start the BACnet Explorer and discover devices from a BACnet/MSTP network.

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Q: How does the U+4 Field interface get its power?

A: The U+4 Device draws its power from the USB cable and hence will not require any other power source.

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Q: How do I use the U+4 with the BAS-o-Matic to sniff a network?

A: The U+4 hardware is an intelligent USB to fieldbus interface. This allows you to use your PC's USB port to connect to an MSTP (RS485) network for sniffing the MSTP Network. This sniffing can be done with the help of the Cimetrics Sniffing software called as the BAS-o-Matic.

The following needs to be done for a connection;

  • Install the driver for the U+4 on your PC
  • Plug the device into your PC (In the USB port).Once the U+4 is plugged into the PC in the USB slot, this will add an extra Local Area Connection in your Network Places that corresponds to the U+4. In order to configure settings, you would need to select this Local Area Connection.
Once you are in the Local Area Connection, RT Click | Properties |Configure | Advanced, you will see all the options given below. Please configure according to your use.

Card Speed:

Select needed Baud rate(in the range from 1200 to 115200 bps) from the list

Filter:

Use the filter option to select what kind of packets you want to capture or receive:
  • "All" - to receive all packets (including all types of MS/TP frames and error notifications)
  • "All BACnet data" - to receive all MS/TP frames transporting BACnet NPDU.
  • "Directed BACnet data" - to receive MS/TP frames with BACnet NPDU, destined only to our Node Address and Broadcasts.
  • "Directed BACnet NPDU only" - to receive only directed or Broadcast NPDU. (accepted by any BACstac version). MS/TP information is absent.
Node Address:

Set address of this node in the range [0-254]. IMPORTANT Note: Master node must be in the range [0-Max_master]

Node Type:

Select "Monitor Node". The "Monitor" mode can be used for Bas-o-matic only. This mode would be used if you are using the fieldbus interface purely for sniffing purposes only.


Max_info_frames[1-10]:

Leave at default settings.

Max_master[1-127]:

Leave this at the default settings.


Once the above settings are done, you should be able to start the BAS-o-Matic and start capturing communications from a BACnet/MSTP network.

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