Associated Products:

DCS240, DT500, DT500D, DT500DCE, EVO, EVOD

KB1049: Digitrax Query Mode

This article was last updated on Nov. 13, 2016, 1:09 p.m. | Print Article | Leave Feedback

Digitrax Query Mode:

The new generation of Digitrax Advanced Command Stations and other new products from ~October 2016 onwards include some convenient new self-diagnostic and external diagnostic capabilities and methods, to help keep LocoNet systems and devices healthy and working optimally, without requiring additional tools.

The DCS240 and DCS210 Advanced Command Stations include “Query Mode” diagnostic information that can be interrogated or read-out using enhanced capabilities of DT500 throttles. Advanced Command Station Query information is grouped into six broad groups of data/diagnostic information displayable by a DT500/DT500D:

  1. “Lnt”: LocoNet Device Type/product info
  2. “ELE”: Device Electrical information, voltages/currents, etc.
  3. “Lnt”: LocoNet message status information
  4. “FLG”: Device Flag state information
  5. “Slt”: Command Station Slot usage information
  6. “tRK”: Booster track actions/status

To enter “Query Mode” using a DT500 on a LocoNet with an active DCS240 and/or DCS210: Press the DT500’s PWR, DISP keys in sequence. The LCD display center 2 status digits will typically then show “Q0” for “Query Device 0”, which is the active Command Station. Press EXIT key to get out of Query mode.

You can then change the RH DT500 throttle knob to scroll through all the available information for the identified device(s). This information is provided for interested users, to be able to more easily diagnose system issues by themselves, or in conjunction with Tech Support persons.

For the DCS240/DCS210 Query info the following tables indicate the meanings, which in most cases may be self-evident. The 4 right Loco Number digits may indicate the info type being displayed. 

Lnt” group text in LH Loco Number display digits: LocoNet Unit identification       

LH main display code

RH text Example

Means

D:

DCS240

Device name

S#c

0568

Device serial no.

HWver

0.1

Hardware version

SWver

0.2

Software version

ELE” group text in LH Loco Number display digits: Unit electrical information

LH main display code

RH text Example

Means

Notes

Vtrk

12.6

Track voltage

In 0.1V steps

Vin

15.8

Device input volts

DC input volts

Iin

0.1

Average Current in

Offset ~0.1A

Ilim

5.0

Track current limit

Set by DC jack etc.

Vrs

13.2

Railsync load volts

Lowers with current draw

Vln

10.4

LocoNet rest voltage

Should be above ~8.5V

 “Lnt” group text in LH Loco Number display digits: LocoNet message counts 

LH main display code

RH text Example

Means

Notes

Msg

1663

Good LocoNet messages

Press ‘0’ key to reset

Bad

0000

Bad Ln Msgs

All this group counts

Slp

0000

Number or LN Sleeps

 

 “FLG” group text in LH Loco Number display digits: Unit state flags. Press DISP key to refresh           

LH main display code

RH loco

Example Means

Notes

Itrk Max

OFF

OFF = Track is not over I limit

 

Vin Lo

OFF

OFF =DC Input voltage is > ~13.5V

 

Vin Hi

OFF

OFF = DC Input voltage is < ~24V

 

Rsync Max

OFF

OFF= Railsync load volt drop is OK

 

Fuse Bad

OFF

OFF = Internal 10A fuse is OK

ON=replace fuse

Overtemp

OFF

OFF = Device is NOT overheated

 

LnetVmin

OFF

OFF is LocoNet Rest volts OK

 

PtrkIsol

ON

ON: Last Prog Trk access aborted due to stray voltage detected, OFF= OK

ON means check wiring

PtrkMaxI

OFF

OFF= last Prog Trk access current was OK

 

TrkI Lim

OFF

OFF=Trk current limit not lowered due to excess input voltage or temperature

Informational

USB Link

OFF

USB port is NOT enumerated to a PC

OFF on DCS210

 “SLt” group text in LH Loco Number display digits: Slot usage info     

LH main display code

RH text Example

Means

Notes

Used

0002

2 slots in use

 

Idle

0001

Idle slot count

Available to recycle

Free

0401

Slots free count

 

Ctop

0001

Consist Top count

 

Cup

0001

Slots consisted UP

Includes nested consists

 “tRK” group text in LH Loco Number display digits: Track Booster disturbance info 

LH main display code

RH text Example

Means

Notes

Flt

0000

Number of full fault Shutdown cycles

Press ’0’ key to clear this group’s information

Arv

0001

Number of good Autoreverse cycles

 

Dst

0220

Track disturbances seen since last

reset/clear

Brief track events that did not result in Shutdown or

Autoreverse cycles

Note that pressing the DISP key or changing into a new Query group with the RH throttle knob will refresh device information. The values are given within a tolerance value, for diagnostic comparisons.

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