WattNode® for LonWorks® – Options

These options apply to the following families of WattNode meters for the LonTalk® protocol:

See downloads for options specific manuals, external interface files XIF, etc.

Data Logging Option L

This option is available on both standard and revenue accuracy models. Option L is for special applications where the LonTalk network is not available or not reliable. Order the logging option by adding a -L to the end of the part number. For example: WNC-3Y-208-FT10-L for standard models or RWNC-3Y-208-FT10-L for revenue models

Option L provides internal logging to non-volatile memory. Logging intervals can be selected from 1 minute to 12 hours. Memory allows logging of up to 250 days of 15-minute data. The logged values are:

  • Date and Time
  • Net Energy (A, B, C and Sum)
  • Reactive Energy (Sum)
  • Positive Energy (Sum)
  • Real and Reactive Power (A, B, C and Sum)
  • Voltage, Current and Power Factor (A, B, C)
  • Demand

See the WattNode Logger for LonWorks page for more information.

Pricing:
For revenue grade accuracy see WattNode Revenue for LonWorks Models.
For standard accuracy see WattNode Logger for LonWorks Models

Option CT

This option configures the network variable nciCtAmps to the specified CT rated current. The format is: Option CT=xxx where xxx is the rated current of the CT. See the WattNode for LonWorks – Option CT page for details. The nciCtAmp variable can be field configured or overridden except on revenue models, which are locked and cannot be changed in the field.

Option B

This option is available only with the WattNode Plus.
If you need a WattNode meter that behaves like the old WNB series models (model numbers WNB-xx-xxx-FT10), then order a

WNC-xx-xxx-FT10 Opt B

The Option B WattNode models are very similar to the original WNB series WattNode Plus models, but with a few changes:

  • New program ID: 8:00022:1500:0A04:05. Because there are some hardware changes, LonMaker® requires a new program ID.
  • Energy and time of day are stored to non-volatile memory every 5 seconds. The old version stored these every 20 seconds.
  • The energy log has been removed (see our WattNode Logger for LonWorks if you need logging). The nviLogRequest and nvoLogData variables still exist, but do nothing.
  • The network variable list is identical to the original WNB series WattNode Plus
  • Firmware Version 3.03
  • Downloads

Option BI

This option is available only with the WattNode Plus.
If you need a WattNode meter that behaves like the old WNB series models the integer output Option (models numbers WNB-xx-xxx-FT10), then order a

WNC-xx-xxx-FT10 Opt BI

The Option BI WattNode models are very similar to the original WNB series WattNode Plus models with integer outputs, but with a few changes:

  • New program ID: 9:00022:1500:0A:04:0B. Because there are some hardware changes, LonMaker requires a new program ID.
  • New XIF (external interface file)
  • Energy and time of day are stored to non-volatile memory every 5 seconds. The old version stored these every 20 seconds.
  • The energy log has been removed (see our WattNode Logger for LonWorks if you need logging). The nviLogRequest and nvoLogData variables still exist, but do nothing.
  • The network variable list is identical to the original WNB series WattNode Plus with option I (Integer Output).
  • Firmware version 3.13
  • Downloads

Option PT

This option is available only with the WattNode Plus and WattNode Logger models.

Option PT improves support for potential transformers (PTs), making it easier to use WattNode for LonWorks meters with medium voltage services. Specifically, Option PT adds a configuration property UCPTptRatio which configures the ratio of the external PT, allowing the meter to automatically scale the voltage, power, and energy readings.