PINNED - R-Net for dummies

[Mr TT]

I have 2 wheelchairs one is a BM style wheelchair with 8 mph motors and an R-net system like your BM1, with a lithium battery pack. If I read from the controller, and then try to write it straight back again I get this error message. If I do the same with my wheelchair I don't get the problem, so it must be a problem in the programming specifically to do with this chair?

[Burgerman]

What are the two power modules from? A permobil by any chance?

And the generic programmer you are using has some strange options that are not relevant to most chairs too.

What version of the programmer too?

[Mr TT]

The title on the zip file is uploads_Setup_OEM_Generic_6_1_2-902762832. Do you need me to open it or Pandu a screenshot of the about page?
I don't think the power module is permobile, But I would have 2 open the wheelchair up to be certain.

Where can I download the most regular one?

[Burgerman]

Its not about regular (I dont actually know what that would mean?) its about using the brand that the power module was intended for.

Many companies have modified firmware extensions. The permobil one is an example. It has things like their own gyro brand settings and algo in it.
And their own seating, joystick brands too. So you can come across situations where you are trying to write settings for a module hat doesent know about hem. Or has restrictions set up to prevent certain things.

I found a few similar issues trying to use the generic versions. Especially the newest ones. They have settings fpr steering servos etc built in for e.g.

I get very few issues with the sunrise versions - maybe because I have about 7 such power modules. It works great on Dietz, Sunrise, permobil (cant do their oddbal branded stuff but no errors).

In this case it seems it doesent want to allow you to write the "output voltage" to the module. What did you set here?

PM me.

[Burgerman]

Also not related. But I would dump 11. Install 10 LTSC IoT as its 100 times better!

[FelipeOliveira]

I have 2 wheelchairs one is a BM style wheelchair with 8 mph motors and an R-net system like your BM1, with a lithium battery pack. If I read from the controller, and then try to write it straight back again I get this error message. If I do the same with my wheelchair I don't get the problem, so it must be a problem in the programming specifically to do with this chair?

Good evening!

Which parameter are you trying to change and are getting an error? And what value do you want to set?
I have the file you attached here open

[Burgerman]

His "error" is that one of his power modules wont accept that he has set the motor output voltage higher than its firmware will allow. I think!

Its in his screenshot.
If you set that parameter too high the PM wont allow it. Some will not allow it to be changed at all. Many of the software versions do not even include this field.

Sunrise ones allow this, up to a certain voltage. But some dont. Some will only allow figures that are safe for lead based cairs. Default is around 21.5 to 22V. With lead higher means less control. Less headroom as voltage drops during load and discharge.

[Burgerman]

For those that dont know

This is a comparison between dealer and OEM versions.

Here on the left several headings are completely missing.
When they are not, then many of the items inside those heading have lots of parameters missing...

Here for example I opened MOTOR on both versions.

[snaker]

What's the main difference between Rnet 90A and Rnet 120A (apart from the current)?

Do Rnet 90A's electronics support max 36V as Rnet 120A?

Do Rnet 90A and Rnet 120A use the same joystick? Can these joysticks be swapped between them?

Do Rnet 90A and Rnet 120A use the same connectors? Can these connectors be swapped between them?

Do Rnet 90A and Rnet 120A use the same power and motor connectors as VR2-90A? Can these connectors be swapped between Rnet 90A/120A and VR2-90A?

[Burgerman]

Forget 90A VR2 as its a different system.

ALL R-net stuff joysticks, etc is plug and play.
All 24V nominal.

The 120A module is JUST a power module.
The 90A L version is also a single channel actuator controller so tilt for e.g. Built in. If that needs lights it uses its own lighting module. If it needs more seating options then it needs a seating module at which point it no longer makes sense so a 60 or 80 or 120 normal power module can be used instead.

Same connectors.

Do Rnet 90A's electronics support max 36V as Rnet 120A?

No exactly the same

Do Rnet 90A and Rnet 120A use the same joystick? Can these joysticks be swapped between them?

Yes and yes...

Do Rnet 90A and Rnet 120A use the same connectors? Can these connectors be swapped between them?

yes.

Do Rnet 90A and Rnet 120A use the same power and motor connectors as VR2-90A?

Not sure, they look similar, never owned VR2.

Can these connectors be swapped between Rnet 90A/120A

Yes

and VR2-90A

I THINK so...

[emilevirus]

His "error" is that one of his power modules wont accept that he has set the motor output voltage higher than its firmware will allow. I think!

If I set voltage too high, it'll just revert back to the default 22v. No error, nothing. On Sunrise, the limit is 26v. On my magic one, I set 31v and it saved just fine. Some companies hard locked it in the firmware.

[snaker]

Thanks BM, I have some more questions:

How to detect if a Rnet joiystick (the one without screen) is pure PG and non-permobil?

How to detect if a Rnet 120A power module is pure PG and non-permobil?

Is the the Rnet OEM dongle is still buyable in 2025?

How to detect if a Rnet dongle is true OEM?

[snaker]

His "error" is that one of his power modules wont accept that he has set the motor output voltage higher than its firmware will allow. I think!

If I set voltage too high, it'll just revert back to the default 22v. No error, nothing. On Sunrise, the limit is 26v. On my magic one, I set 31v and it saved just fine. Some companies hard locked it in the firmware.

My purpose is to increase motor voltage to 30V or at least 28V. If not possible, that's an expensive disappoint.

[Burgerman]

Thanks BM, I have some more questions:

How to detect if a Rnet joiystick (the one without screen) is pure PG and non-permobil?

Non are pure as such. They all have at least a different branded logo. But PG supply all of them. The only ones that are a bit odd are the saller screen PCJSM that lacks a couple of buttons too. Thats branded and made for permobil ONLY. the rest are all CJSM2 ones.

How to detect if a Rnet 120A power module is pure PG and non-permobil?

Not sure.

Is the the Rnet OEM dongle is still buyable in 2025?

Again not sure, but the dealer version is usable in the same way if you know how.

How to detect if a Rnet dongle is true OEM?

Plug it in...
Or look on the label. An OEM one has a tiny B on the corner and the dealer one has an A instead.

[sergey0]

[quote="snaker"How to detect if a Rnet dongle is true OEM?[/quote]
Look at the picture. OEM on top, Dealer on bottom

OEM/Dealer

[CPguy]

I have a question regarding the R-Net battery connector on the A120 power module. Is that a generic connector (will an "Anderson SB 50 grey" fit?) or do I need a special connector on the power module side?

[Scooterman]

I have a question regarding the R-Net battery connector on the A120 power module. Is that a generic connector (will an "Anderson SB 50 grey" fit?) or do I need a special connector on the power module side?

Nope. Anderson SB50 definitely won't fit r-net controller module.

Btw I always find the connectors difficult to pull out and put back in as they're so close to each other and cos of the plastic tabs.

[emilevirus]

I have a question regarding the R-Net battery connector on the A120 power module. Is that a generic connector (will an "Anderson SB 50 grey" fit?) or do I need a special connector on the power module side?

Here: https://www.wheelchairdriver.com/board/ ... 22#p213536

[shirley_hkg]

[shirley_hkg]

How do I get a new cable ?

[Burgerman]

Order one from chair or controller manufacturer.

[shirley_hkg]

May I have the parts number and link to order from Sunrise ?

[Burgerman]

Sunrise use standard generic R-Net which do not use removable connectors. Thats a permobil or custom option.

[shirley_hkg]

It's a Dietz.

Found some PSJM cables on ebay.

Thanks.

[Kande_ian]

Hi Shirley
Sunrise list part #136491 https://wheelchair-parts.com/Wheelchair-Accessories/Power-Wheelchair-Joystick-Accessories/Rnet-Replacement-Joystick-Cable-CJSM2-CABLE-1200/45927p but the price isn't very attractive.

[shirley_hkg]

[Burgerman]

 item 4 20011035 R-Net loom with angle plug, 300mm £29.50

Found one on sunrise UK site as a part.
With a more sensible price. Why its there I don't know. Their CJSM2 are soldered, come with a cable permanently attached.
Unless its for the CJSM?

Either way that's the price, plus VAT and delivery.

[rover220]

How do I get a new cable ?

That's a Cjsm2 cable that is replaceable. Available in different lengths with either male or female at the other end.

[rover220]

Sunrise use standard generic R-Net which do not use removable connectors. Thats a permobil or custom option.

Not true, replaceable on any Cjsm2 except some very early ones that were hard wired.

[rover220]

 item 4 20011035 R-Net loom with angle plug, 300mm £29.50

Found one on sunrise UK site as a part.
With a more sensible price. Why its there I don't know. Their CJSM2 are soldered, come with a cable permanently attached.
Unless its for the CJSM?

Either way that's the price, plus VAT and delivery.

They don't, Cjsm2 has replaceable cable.