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Release Notes

4.0.0

Released on 2025-08-07.

Added

  • W-BACnet: Improved performance when transmitting large amounts of data.
  • Wall Mount & DIN rail: In case of any operating system crash, all three LED's will become solid red after booting up again. This state can be cleared with a push of the button, after which the LED behavior will return to normal.
  • Added support for the Compact form factor.

Changed

  • PDR of any node in the network map now takes into account the PDR of each parent all the way to the gateway. This better represents end-to-end PDR.

Fixed

  • Updates to gateways via the W-BACnet/W-Modbus App propagate throughout networks without having to restart the gateway.

Known issues

  • W-BACnet: when upgrading from any FW version less than 4.0.0, to this version or above, there may be service disruption only during the time in which the FW is being propagated to the rest of the nodes in a network.
  • While the W-BACnet/W-Modbus mobile app is connected to a W-BACnet/W-Modbus device, the device bandwidth is temporarily reduced by 33%.
  • Downgrading the firmware to a version below 3.0.0 will factory reset the device.

3.3.2

Released on 2025-04-25.

Added

  • W-BACnet: Autobaud can now be enabled by switching on dip switch no. 4 (previously used for stop bits). The W-BACnet device, after booting, will "lurk" on the MS/TP bus until the baudrate of a connected BACnet device is identified. If the baudrate cannot be identified within 90 seconds, legacy behavior will be resumed. Baudrates in the order that they are tested by autobaud are: 76800, 38400, 19200, 9600, 57600, 115200.
  • OEM modules: Ability to switch between BACnet and Modbus via SPI and/or UART management interface.
  • OEM modules: Ability to read and write device name through SPI and/or UART management interface.

Fixed

  • When OEM module nodes are decommissioned by a connected gateway, the commissioning bit is now correctly cleared.
  • Improved network recovery time significantly after updating the gateway.

Known issues

  • After updating a Gateway through the W-BACnet/W-Modbus App, the upgrade may not propagate to devices in the network unless the gateway is restarted. Fixed in 4.0.0.

3.3.1

Internal release, no changes to firmware.

3.3.0

Released on 2024-12-05.

Added

  • The BLE status, whether the device is advertising or not, can be read through SPI/UART interfaces on the OEM module.
  • The firmware version can be seen on the network map with the next mobile app version (coming soon).

Changed

  • BLE advertisements now run for 3 minutes, with an interval of 417.5 ms.
  • The network map now works in commissioning mode as well.
  • Stop bit and parity are no longer configurable for the W-BACnet products.
  • GW always advertises for 1 minute after DFU update.

Fixed

  • The OEM documentation is updated.
  • Miscellaneous bug fixes.
  • SPI is now reset if SPI master device is reset.
  • RS-485 frame spacing is now more consistent.

Known issues

  • Pro form factor logos are wrong in the app.

3.2.7

Released on 2024-10-01.

Added

  • Rewrite I-Am, I-Have, and I-Am-Router-To-Network from broadcast to unicast to reduce the risk of broadcast storms, for W-BACnet products.

Fixed

  • Intermittent RS-485 bus communication issues fixed for W-BACnet products.

Known Issues

  • Pro form factor logos are wrong in the app.

3.2.5

Released on 2024-05-24.

Fixed

  • Consecutive responses to modbus polls by client fixed.

3.2.4

Released on 2024-05-17.

Fixed

  • Intermittent mesh network loop issues fixed.
  • Rare wireless communication issues fixed.

Known Issues

  • Two consecutive Modbus responses can be put on the bus.

3.2.3

Released on 2024-04-30.

Fixed

  • Frequent changes in RS-485 bus parameters bug fixed.

3.2.0

Released on 2024-02-14.

Added

  • UART interface added as an alternative to SPI, can be used to control the oem modules.
  • A new app mode, APP_MODE_IDLE, has been added for the OEM modules, pausing any networking activity when in effect.

Changed

  • BLE version has been downgraded from 5 to 4 (see below concerning the App)

Fixed

  • All Apple iOS 17 devices are now able to use the W-Modbus app with W-Modbus devices on version 3.2.0 or later.

3.1.1

Released on 2023-12-18.

Changed

  • W-Modbus module documentation has been revised.

Known Issues

  • The W-Modbus app can only set device names with 8 characters of length or less on the home screen. Network map devices can have names up to 19 characters.

3.1.0

Released on 2023-11-28.

Added

  • SPI command added for rescanning Modbus addresses, for the oem modules.
  • SPI command added for BLE advertising, for the oem modules.

Fixed

  • Documentation for Modbus SPI button rescanning is fixed.

3.0.0

Released on 2023-10-27.

Added

  • DFU FOTA added, allowing firmware upgrades of an entire network by just upgrading the gateway.

Changed

  • Restricted Modbus addresses 248 through 255 will now also be scanned for compatibility with the solar industry products.

Fixed

  • Issue with detection of consecutive addresses on the Pro units fixed.
  • SPI NOP command no longer causes subsequent commands to time out on the oem module.

2.2.3

Released on 2023-08-23.

Fixed

  • Compatibility added for W-Modbus devices to work with solar inverters.

2.2.1

Released on 2023-04-27.

Added

  • Wall Mount and DIN rail LEDs can be turned on/off permanently by 5s button press.
  • Wall Mount and DIN rail LEDs can now indicate firmware version by 15s button press.
  • Pressing the button on the GW can turn on the LEDs on all wireless devices (Wall Mounts and DIN rails) in the network.

Changed

  • RS-485 reliability significantly improved.
  • LED colors behavior is updated.
  • Mode and network status is now combined and shown at the top LED.
  • GW's top LED is now magenta.
  • For mesh nodes, the network status LED indicates the connection quality: red for poor, yellow for fair, and green for good.
  • For mesh nodes, the network status LED blinking yellow signifies searching for a network to join.
  • RS-485 bus activity is shown on the middle LED, with blue/ green blinking for TX/ RX.

2.2.0

  • Released on 2023-03-24.

Added

  • W-BACnet and W-Modbus DIN rail products released.

2.1.1

Released on 2022-09-20.

Changed

  • Start token passing on the gateway when an MSTP device is connected to one of the nodes in the network.

2.1.0

Released on 2022-06-01.

Added

  • W-BACnet OEM Module released.

2.0.1

Released on 2022-05-05.

Fixed

  • W-Modbus Pro shows when at least one modbus RTU server device address has been found.
  • W-Modbus Pro units will always find the lowest four RTU server device addresses present if more than four devices are on the same bus.

2.0.0

Released on 2022-04-25.

Added

  • W-BACnet Wall Mount product released.

1.2.0

Released on 2022-04-14.

Added

  • W-Modbus and W-Modbus Pro OEM Module products released.
  • Rescanning modbus RTU addresses can be triggered by pushing button twice.
  • OEM module's app mode defaults to Mesh node from None.

Fixed

  • Missing address 247 while scanning for W-Modbus fixed.

1.1.2

Released on 2021-09-27.

Changed

  • RS-485 reliability improved.

Fixed

  • DIP switch bug fixed.

1.1.0

Released on 2021-06-29.

Added

  • SPI interface added for controlling the oem module.
  • New LED behavior: All LEDs will flash yellow when a node is scheduled to restart.

1.0.2

Released on 2021-06-01.

Fixed

  • Uncommissioning triggered by a short push on the push button is fixed.

1.0.0

Released on 2021-04-09.

Added

  • W-Modbus Wall Mount product released.
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