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Locked Zimo decoders momentum issue #zimo

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Good evening,
?
I have a case of some Zimo decoders behaving strangely. I am running JMRI 5.8 on an RPi.
?
On my Zimo decoders I like to add in the reduced momentum function. In the past, I’ve done this through the ‘Shunting/Uncoupling’ tab and it’s worked fine. However, I tried to do this on a Zimo MN170 decoder running Zimo version 4 software, and while the loco responds with reduced momentum when accelerating, on decelerating it seems to ignore the reduced momentum and instead it decelerates at a rate according to the Value of CV4.
?
I had this issue with a Zimo MN180N18, also running software v40,?instead of using the ‘Shunting’ tab, I programmed in the reduced momentum using the new section in the ‘Acceleration & deceleration’ tab, and that decoder responded as expected with the reduced momentum. However, the issue persists with the MN170, and also a MX619 running software v39.?
?
Any advice or suggestions will be greatly appreciated?
?
Kind regards?
?
Josh Swales
?
 

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I’d talk to Zimo direct. They’re really helpful

Something at the back of my mind is ringing bells. I had a similar issue with one SPECIFIC momentum multiplier - but I can’t remember which version of their firmware this was

Using the Zimo decoder docs, make your changes on the appropriate tabs in DecoderPro THEN check the cv tab has the right value for the specific cv

If it doesn’t, it’s a DecoderPro issue. If it does, and the loco still behaves weirdly, it’s a Zimo issue

Phil G

PS Everything you need is at?

On 16 Nov 2024, at 20:33, Josh Swales via groups.io <jrs.swales@...> wrote:

?
Good evening,
?
I have a case of some Zimo decoders behaving strangely. I am running JMRI 5.8 on an RPi.
?
On my Zimo decoders I like to add in the reduced momentum function. In the past, I’ve done this through the ‘Shunting/Uncoupling’ tab and it’s worked fine. However, I tried to do this on a Zimo MN170 decoder running Zimo version 4 software, and while the loco responds with reduced momentum when accelerating, on decelerating it seems to ignore the reduced momentum and instead it decelerates at a rate according to the Value of CV4.
?
I had this issue with a Zimo MN180N18, also running software v40,?instead of using the ‘Shunting’ tab, I programmed in the reduced momentum using the new section in the ‘Acceleration & deceleration’ tab, and that decoder responded as expected with the reduced momentum. However, the issue persists with the MN170, and also a MX619 running software v39.?
?
Any advice or suggestions will be greatly appreciated?
?
Kind regards?
?
Josh Swales
?

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