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Linlog Release #652

Owned by Oliver Skidmore (Unlicensed)
Last updated: Jul 14, 2020
2 min read

This release only contains changes for S-LX model loggers. 

Firmware

Status

Hardware Platform
SA-SSIS-LXT-LX
#652BETA

CENTRIX APPROVED

BETA

HXP-3 Predictor crossing support

The logger can now passively retrieve HXP-3 V3.2 data. The following channels are made available:

Data Channels

The following table lists the channels which will be reported by the S-LX for a single track circuit. Note: Each HXP-3 reports two Track Circuits simultaneously, and requires one data logger. The track name is held in the loggers configuration.

Channel Name

Type

Purpose

the following are per TRACK
Ring Status Bits
<trackName>:RX < MD RestartDigital
<trackName>:Wheel Count OverrideDigital
<trackName>:Sudden Shunt OverrideDigital
<trackName>:Ring UnitDigital
<trackName>:Sudden Shunt FlagDigital
<trackName>:MD Restart SetDigital
<trackName>:Constant Warning SetDigital
<trackName>:CWE UPDigital
<trackName>:RYD Switch in CWDigital
<trackName>:Primary TTC < WTDigital
<trackName>:Reverse Move OverrideDigital
<trackName>:AUX DownDigital
<trackName>:Secondary DetectionDigital
<trackName>:Post Joint DetectionDigital
<trackName>:Positive StartDigital
<trackName>:PreemptionDigital
<trackName>:Override RingingDigital
<trackName>:Decreasing Phase InDigital
<trackName>:Position Filter TTC < WTDigital
<trackName>:CWE Dropped PreemptDigital
<trackName>:Hold Down MotionDigital
<trackName>:Island DownDigital
<trackName>:Zero Speed DetectedDigitalnote: This is debounced with a 5 second timer to prevent excessive data
<trackName>:Outbound OverrideDigital
<trackName>:RXAnalogue%age. Note: this can go overscale, (32767 → 32767/25000*100)
<trackName>:PhaseAnaloguelevel 0..32767
The following are per HXP-3

<trackName1>/<trackName2>:IdleDigitalThis will go HIGH when the HXP-3 crossing is not sending data to the logger (FAULT).

VHLC Time stamp fix

The VHLC application timestamps events using its own (synchronise to NTP) time source. This means that any timestamp will match those from other Mpec loggers; but may not match the (normally unsynchronised) clock on the logging computer. The Mpec logger will record these according to the time at which the data was seen, and coalesce them as described below:

Old Behaviour:
12:36:17 27APR19 ACP Rec Var P502RL T P502NWK F P502NL F P505RWK F 
 P505RL F P505NL T R5AM T UAA T

Time stamp for "P502RL" (form the first line) would be the arrival time of the '1' in the timestamp.

Time stamp for "P505RL" (from the second line) would be the arrival time of the first space (' ') from the second line.

New Behaviour:
11:27:33 12DEC18  ACP Rec Var LFSUP    F
11:27:33 12DEC18  VLP Rec Var
CON_SR_OUT    F    LOWER_SR      F    XNSRA         F    YOD_CR_OUT    F
12:36:17 27APR19 ACP Rec Var P502RL T P502NWK F P502NL F P505RWK F 
 P505RL F P505NL T R5AM T UAA T

The time stamp for LFSUP will match that for CON_SR_OUT (and be the time at which the first "1" of the timestamp was received).

Time stamp for "P502RL" (form the first line) would be the arrival time of the '1' in the timestamp.

Time stamp for "P505RL" (from the second line) would be the arrival time of the '1' in the timestamp.

GPS Support

T-LX data loggers contain an integrated GPS module. It can be used to report position in the form of three analogue channels, which are longitude, latitude & altitude.

Alstom Level Crossing Controller

This feature is in alpha testing.