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Trouble with Digitrax PR4 and DS74 switch controllers #digitrax

 

I am new to JMRI and I connected up JMRI to my? HO Layout. I use Digitrax DS52 , PR4 & DS74s(9) to control my 34 Atlas Turnouts. All turnouts were working fine when controlling them from the DS52 command center, or the DT602 remote control and about one half have the DSXCP1 switch control panels. On JMRI I was able set up my connection, I was able to program my Locomotive Roster OK and program them on a program track. When I started updating my turnout table I was checking the use of controlling the turnouts from JMRI. That's when things got a little crazy. when I opened and closed switches they would usually work OK but? at times switches would randomly click open and closed and some times I would have to press them twice to get a response. Other times I would also hear multiple clicks on different turnouts. After a while my PR4 went dead and all of my DS74s froze in the OPS mode (ID&OPS LEDs alternate blinking). I tried everything to reset the DS74s but they were totally unresponsive. I have sent the PR4 and DS74s back to Digitrax for repair. Can anyone give me some ideas on what went wrong. It seems to me that somehow the voltage was too high and burnt out the PR4 or something was out of sync or in conflict with the communications on the the LocoNet.
 

On 4/12/2025 12:13 PM, m@... wrote:
When I started updating my turnout table I was checking the use of controlling the turnouts from JMRI. That's when things got a little crazy. when I opened and closed switches they would usually work OK but at times switches would randomly click open and closed and some times I would have to press them twice to get a response.
When controlling from JMRI? Or from the DSXC1?

After a while my PR4 went dead and all of my DS74s froze in the OPS mode (ID&OPS LEDs alternate blinking).
(I would suspect that the Digitrax-users list might be a better place to post this...)
 

It was when I started using JMRI. The turnouts worked fine using the DS52 command station, DT602 throttle & the DSXCP1.
 

On 4/14/2025 7:09 AM, m@... wrote:
It was when I started using JMRI. The turnouts worked fine using the DS52 command station, DT602 throttle & the DSXCP1.
There are probably two different problems that I can think of. Both are "Digitrax-specific" problems.

One problem Digitrax users of JMRI have is turnout control problems. This is a generic problem, made somewhat more difficult by changes in the most-recent Digitrax command station designs. It has been discussed ,, in great detail, and with several different "solutions" depending on your railroad's needs, at:



.

The second problem is that the DSXPC1 LEDs can get "out of sync" with the controlled switch, _when any other mechanism_ is used to control the switch. The DSXCP1 _does not_ get any information on the switch's actual position. If you fiddle with a switch with a "throttle" or a software package, the DSXCP1 LED can become "wrong". This is a "feature" of the DS74/DS78V hardware. Discussion of this problem should not be taken up with the JMRI list. Instead, the problem should be taken up with Digitrax, who would have to re-design the DS74/DS78V/DSXCP1 !
 

Thank you for reply. I have sent the DS74's and PR4 back to Digitrax repair. Will be interesting to see what they say.
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