| Firmware Status | RECOMMENDED |
|---|
Overview of Changes
| Variant | New Version | Changed |
|---|---|---|
| Aster | 80 | Yes |
| FS2600 | 80 | Yes |
| Reed Relay | 80 | Yes |
| UM71 | 80 | Yes |
| VT1 | 80 | Yes |
New Features
VT1 Vane Relay
The 4-20 mA analogue output re-scaled:
| Output Current | Old Torque | New Torque |
|---|---|---|
| 4 mA | -25 | 0 |
| 20 mA | +25 | +25 |
This was to give a better signal-to-noise ratio on the 4-20mA output. A vane relay must never generate negative torque. To do so would imply a very short-time transient event, incorrect installation of the VTi21 or catastrophic failure of the VT1 track circuit.
HVI Track Circuit
HVI Track Circuit Monitoring using the VTi21 in presently underdevelopment. The latest VTi21 firmware bundle includes an HVI variant. The firmware is not ready, even for a beta release.
All Variants
Version number harmonisation across all VTi21 variants. All VTi21 will share the version number of the global release going forward. E.g. this is global release #80. All VTi21 variants are also therefore at version 80.
This means that VTi21 firmware versions may increase even
Bug Fixes
All variants
- RS485 bugfix: Transmit data buffer could overflow causing data corruption.
- RS485 bugfix: Transmit data could be incorrectly encoded causing data corruption.
- AoC bufix: Large AoC settings could be mis-interpreted and end up manifesting as a very small AoC setting on the VTi21.