VMSpc Engine Monitoring for PC.

New PC driver, all platforms

A new hardware Driver Is Available

Hey folks...Art here...

As much as I've enjoyed meeting many of you over the phone; spending many an hour installing drivers, a change is here. It comes in the form of a new driver package, that is to say, a new software package. If your system is working, ignore this for now.

Otherwise, that package can be downloaded as part of the full-on distribution disc or as a drivers-only disc. As many of you've found, the installation can be anything but plug-and-play. Manually added drivers were too common and just a huge time sink for our coach friends. Well...and me, too!

So, I dug through the scripting and driver files, found a bug and squashed it. The newly minted files have been reassembled into packages. You'll find them in the VMSpc Downloads area. As before, just run the application "Install Drivers" and reboot.

After rebooting, Open VMSpc. The first time it runs, you may need prompt it to where the JIB is:
......button: (Scan For Jib Connections)

You'll see highlighted in blue**:
COM3 VMSPC Virtual Serial Port (COM3) FTDIBUS

**Your actual port may be 4 or 5 or something else.
Press button (OK) and your gauges should appear normally.

Otherwise... stay in touch!

Art Renda
Documentation Central,
Silverleaf Electronics Inc.
Sunny Albany Oregon
(888) 741-0259

VMSpc Engine Files

Looking for a particular engine for your VMSpc™ installation? All the current engine files that we have added to the VMSpc distribution since 2008 are here for your convenience - Open the link for the group, extract the Engines Folder to your C:\VMSpc folder, then select [Advanced] [Engine Type] use the [Look In] box at the top to open the newly downloaded Engines folder. Select your engine then click [Open]. you're done ;-)

If your engine is not included in the VMSpc Installation or on this page, contact us and we'll go to work on developing the calibration tables for it. Some ISL9 engines have been difficult (or impossible) to find data on. It seems Cummins is choosing to keep this information "proprietary" and otherwise all to themselves. If this is the case, you may need to help by requesting it or scouring the web for it.

Also note that these files are only used to calculate torque and horsepower. All other gauges and features will function and report without them.

VMSpc Air Pressure readings

I am using VMSpc on a 2003 Foretravel Cummins 400 ISL.

I created 2 parameters with the PIDs from a list (117 and 118). These 2 parameters are for front and rear air tank pressures.

I get these 2 pieces of data on the DIC but the Silverleaf does not pick up the data. The PID sniffer does not pick up on the PIDs as well but again I can add to the parameter editor as primary and secondary air.

Is this info possible on Silverleaf since the DIC reads it?



7-8" tablet system that works

Just finished (with Art's Help) setting up a 7" tablet with window mount with VMSpc using the 501 (USB) Jib that works great. I worked on it for a week attempting to put together a system that charges the little tablet and runs VMSpc at the same time. One of the problems using a tablet with only one port is the tablet only wants to allow one thing to operate through the single port.

I wound up using the following equipment:

1.) Plugable Pro8 docking station. Pricy little unit but will power the Tablet and allow it to run VMSpc at the same time. The pro8 only works on selected tablets.: Amazon.com

2.) HP 7" Stream Tablet (It's compatiable with the Pro8).: Amazon.com

3.) Windshield cradle mount for Stream 7.: Amazon.com

4.) 12 volt to 5 volt 10 amp converter step down Module.: Amazon.com

5.) JIB: Check with Silverleaf on the Jib that is needed with your vehicle. They have several different types depending upon your needs.

I cut off the end of the power cord of the pro8 and connected it to the Power converter, and the power converter input I connected to a cigarette lighter plug to supply the 12v power needed.

VMSPC Windows 8.1 Drivers on Tablets

Read your article regarding the Atom Processors and tablets. I understood that the Z3745 processor was working. Also got out of one your articles that the ASUS ViVo Tab 8 using the above processor would work with VMSpc so I purchased one. I have room for a 7" or 8" tablet.

I am having the following issues.

1. The VMSpc program and drivers appear to install correctly.

2. Plugging in the Jib ( TM 501 USB) and the jib lights up with a Green steady light and a slow flashing red light.

3. The program loads correctly, however going into the communication tab shows "PC Port Failure " a scan shows no ports. Device manager shows a failure of the drivers to load. Sometimes will error with a problem with "Hash" other times it says "Corrupted or tampered file" or the drivers are not compatiable.

4. Uninstalling and reinstalling does no good.

5. The JiB should be good because I can run everything on a larger laptop with no problems.

6. tried to force install of the drivers but this tablet would require an expert to accomplish that.

The 8" Asus VIVO Tab 8 M81C-B1-BK 32gb Tablet with the Intel Bay Trail T Z3745 Atom Processor is ideal if I can work out the issue with the drivers.

UPDATE: Just looked up the specs on the intel Bay Trail T Z3745 and found it only has one controller which may be the problem. Any Thoughts?


Series 60 11.1

I used my VMSPC on a 12.7L series 60 and had no problems. I have just picked up a 11.1L series 60 and cannot establish communication. In the list of engines there is no listing for an 11,1L. I have tried all of the 12.7L files but nothing seems to work. Is there an archived file somewhere for an 11.1 or what have others done?

Engine File

I purchased a 8" Asus tablet to use with VMSpc. I have a 2003 Bounder 34M and would like to know what engine file to use. I have installed a banks system on the engine and notice you have numerous engine files for cummins and banks. Using the J501 USB Jib. Any help would be appreciated.


Processors (CPU) and Tablets: Its all about the Chips.

Hey Folks, Art here

[[I'm deleting most of this thread--as the new 4-16-2015 driver resolved the conflict. Remaining will be the comments. However, while the efforts shown by our equipment users are terrific, the landscape has changed and this thread should otherwise be read as a historical reference.]]

Many have called with VMSpc issues seemingly related to the USB driver. Unsurprisingly, many have been resolved with some manual-loading of the Virtual Serial Port Driver. Not all--and this bothers me. It was unpredictable. [[Editors note: this also was resolved with the new driver.]]

There's been a few folks now which have tablets that just won't recognize the JIB enough to assign it a unique USB Controller. That's a different problem. If you've been following this, you'll remember the "Acer Aspire Switch" as having a problematic USB controller or Hub issue. The Asus x205TA is another non-starter.

As you know, that controller is paired with a Virtual Serial Port. The two work to move data between the JIB and the VMSpc program. Some of you have found that if the one-two combo breaks, my phone starts ringing and you folks start asking really, really good questions. My white-board then starts filling up with detailed notes and I go through coffee much faster! Well, I finally have some answers regarding the Acer and Asus Tablets.

Brace yourself--this is the nerdy part: Chip-sets

The smaller the screen, the simpler the chipset. Some are particularly so. A mfg'r can use a 'larger' "D" or "E" chipset, one with more features, on say, an 7, 8 or 10" tablet. Some do. Some cheap-out and use a stripped down "F" or "G" chip on 10". Acer did with ONE of the 10" 'Switch' models. Asus did with its 11.6"

At the heart of it, it comes down to these CPUs:
ATOM Z3735 and Z3745.

The Z3735 (the one were focusing on) has four flavors.
Two are now a known problem:
Z3735 F and Z3735 G

[ See the data sheet here: @ www.intel.com ]

The Z37xxD and E have full connectivity and can have 2 extra USB Host Controllers added. Read: VMSpc works as it gets the unique USB controller it needs.

The F and G chips look the same--same size--but they've been neutered; 2 Host controllers built-in are already spoken for and unique controllers are MIA. So, unless a generic device is connected (say, a portable hard drive or flash drive) it won't work. Video performance took a hit, too. The "F" has half the memory pipeline of a E-type, and "G" has only 1/4th of the memory pipeline. The number of pins that connect to the board tell the story: The 'D' and 'E' have 620+ I/O pins vs. 367 on the 'F' and 'G.' That's a LOT of functionality cut out!

The Bottom Line
All Tablets work now with the USB JIB.


Art Renda
Documentation Central
Silverleaf Electronics
(888) 741-0259

Join this conversation:
Post your Tablets' Processor below...

Want an analog clock?

I've been using an analog clock, CrossGL Surface Clock, with my VMSpc display for a few years. The clock runs in Windows and can be set to always stay on top. That lets me place a blank text box gage in my display and place the clock on top of the gage.

Perhaps its my age and growing up without digital clocks but I find I can read an analog clock faster and remember the time better.

While looking for the original download site I see that things have changed a bit and you now have the choice of over 100 clocks. There are no help files so once you open the clock, place your mouse cursor over the clock and right click. You'll get a menu that will let you go to a website for help and support and also get to he clock settings.

Here's the link http://www.crossgl.com/


Retarder Temp (PID120)

I am having difficulty loading PID 120. I can select it from the PID Sniffer list but it does not go to the Simple Gauge list to where i can add the gauge.
Any suggestions?

J1939 Data Link Abnormal Update

I get an error code each time I start the engine. The code is "J1939 Data Link Abnormal Update". The engine is a 2001 Cat 3126B in a 2001.5 Fleetwood Discovery. The code seems generic and I'd like to find a more definitive description of the problem.


VMSpc on $179 Nextbook

I recently ran across a 10" screen Nextbook Windows 8.1 computer at Walmart for $179. This tablet comes with a removable keyboard so that it can be used as a touch screen tablet or notebook.

I've installed VMSpc V2.5 on the Nextbook and now have a dedicated VMSpc computer with sufficient screen real estate to display all the gauges I want at a size I can easily see.

I did have to install the drivers manually to get the computer to recognize the USB JIB. I've purchased a blue tooth mouse to make changes to the program easier and purchased a USB A female to USB B male adapter so I can use a standard cell phone cord to plug into the micro usb port on the Nextbook.

Changing text size

In setting up my VMSpc screen when I added a new gauge like New Clock the text is very large. When I right click on the gauge I only get and option to change color. What am I missing here.

I can resize gauge, but text remains same size.

Tablet Woes

Have specific issues with Specific models of a Tablet (or convertable)?

Post them here so all can benefit.




Maintenance Schedules, LOF and Tanks--Oh My!

Hey folks...Art here...

Its well into that time of year for cleaning out the paddock to make room for the Tiffen...Newmar or Country Coach for the winter ahead--as many of you are relating over the phone. You're cleaning tanks and pulling the blinds. The organized types (which is about ALL of you!) are relating seasonal lists.

Bob "bobrw9" gave a super explanation of how he's using the Maintenance scheduler within VMSpc to manage just that.

Here's the twist: He's doing that on his tower computer at the house. He saw the practical VMSpc application as something that can be installed anywhere; doesn't need the jib connected for this at all.

What he didn't mention was calender file: maintenance.vms it creates.

When you make a schedule for LOFs, tires, tanks, prop-wash and awning lube--whatever; it creates and saves a maintenance.vms in the c:\vmspc directory. Good to know if you already have one started in the coach on the laptop or tablet.

Once that's created, its portable. Copy maintenance.vms (to a flash drive or send it to yourself via an email...however) and save it in the same vmspc folder--in the tower or PC at the house. Non-rolling type, that is. It will be the schedule then, next time you launch VMSpc from there.

Then, when you open that land-locked version, away from the coach, you can have the schedule closer to the shop and coffeepot.

Here's where you can download a fresh copy of the VMSpc
software distribution disc.

Here's a big hello and thanks(!) to Bob for his keen observation.


Silverleaf Electronics
Documentation Central

Tablet PC bargain!

Here's a real bargain!

A fella calling into the VMSpc helpline gave us this tip:

An Insignia™ NS-15MS08 tablet -- 8" (Small but doable) for $99

Its a trimmed-down unit--in that it has limited memory and the caller (who was busily using his own) said it can be a bit laggy with some apps.

This is a great example of a limited or single-use device; perfect for USB-VMSpc on-a-budget. That being said, an 8" screen is small. It will be a bit slower to set up (as resizing and placing gauges will require more patience.) Once set up, it will work well and look pretty nice, port-side, under the side-mirror.

I looked through the reviews and it seems the only nay-sayer got his feelings hurt after he loaded the Microsoft Office 365 Suite and it couldn't run anything additionally. Why put that on such a small tablet? Dunno. The rest love it.

As a bonus, the caller also mentioned its HDMI port--for running video up to his overhead monitor. Zounds! Its HERE: at on the BestBuy.com site.

This same caller mentioned purchasing a $6 'splitter' for USB power.

Combine that with a USB A-to-B adapter and you've got a complete setup.

So...there ya go. Remember: your mileage may vary...


Documentation Central
Silverleaf Electronics

(And will that caller please take a bow?)

Windows 8.1 and ad hoc wifi

Does anyone have an update regarding Windows 8.1 not being able to see the JS550 ad hoc wifi signal? Has anyone identified a good work around?

PID code 233,12...what's that anyway?

A recent caller to the VMSpc hotline was chasing down a PID 233,12 error. That, coupled in a persistent embrace with PID 94,2 Pardon the simile. No other odd (*ahem* Cummins oddity codes); just those two.

After some discussion we felt he had a direction to look into--as it did seem like a hardware failure...but of what, exactly?

Can't sleep? Here's a document which, oddly enough, starts clearing it up:


In the patent description, it discusses the role of the CPC2 as a gatekeeper of emissions. It tells-all to the MCM (as it relates to PID 94 and others) as being a reporter to this monitor-and-controller-of emissions. Its a good read.

I say 'starts' to clear it up as he'd already replaced fuel filter. What else might he look at guys?

Bob-from-rainy-Ohio --Thanks for the heads up on this one!

Art Renda
Documentation Central,
Silverleaf Electronics
(888) 741-0259

Total miles on coach incorrect

The odometer on the coach shows 42005 miles and the VMSpc shows 26115 miles. Is there a way to correct the VMSpc reading to the 42005 miles reading??

WIndows 8.1 Tablet touch screen

Is there a way to lock the VSMpc screen gauges. I have touch screen and every time I touch the screen a gauge moves.


Jake Brake indicator

Is there a "Jake Brake indicator" that can be installed on VMSpc? I have a Detroit 60 with MH4000 trans.

Metric conversion


Being in Australia I have tried to convert my gauges to metric. I think I have achieved most of them (not tested as vehicle off road at present) but need some help with the odometers.

How could I change the units to the metric equivalents on the Odometers and will the values be shown as metric if I have put in the Engine corrections for odometer and fuel meter?

Also I have two Plus under my dash one that shows just engine info and the other just gearbox info (Eaton Autoshift) how can I combine these to show both on the VMSPC?

I think this is a fantastic product and would like to see more layouts, maybe a section for layouts to be shown on here would be an idea


software upgrade

Is there anything the works for a gauge shape upgrade? The glass dash systems have round gauges and other visually attractive attributes. How about just the option of a round gauge. vmspc so far has performed flawlessly. Made me a better driver and improved mileage. 2002 400hp western rv alpine

fuel pressure monitor ?

With a big diesel engine, think big RVs and trucks, when the fuel lift pump fails and the engine is running, nothing will happen. The engine will continue to run.
The lift pump is used to pressurize the fuel system for starting the engine.
When the lift pump has failed and the engine is shut down it will not restart until a new lift pump is installed.
Lots of tow jobs, lots of roadside repairs and lots of money changing hands.

We need way to monitor the lift pump output pressure real time.
Seems as though you folks could step up to the plate on this problem and make some money.

CAT C7 350 Odometers do not work

We have a 2004 Itasca Meridian with a CAT C7 305HP engine and the Bluetooth version of VMSpc. For some reason VMSpc is unable to read either the total fuel or total engine hours. The local truck service center was able to read both with their software so the data is available. The value of VMSpc is significantly reduced without functioning odometers.

Anyone else have a similar problem? How about a solution?

SID 48 & 49

I have a 1999 Cummins 275 ISB in my 2000 Fleetwood Discovery MH. My VMSpc Diagnostics shows multiple codes and I know many of them are inconsequential. But there are a couple I'm concerned about:

ENG SID 48 1 Injector Cylinder #18 Low Reading 7/11/14 10:54

ENG SID 48 1 Injector Cylinder #18 High Reading 7/11/14 10:54

I have had both of these readings multiple times and the same reason for #19 but with SID 49.

Nothing has shown up in the Recent Diagnostic Events window - these all show up in the History Notepad file.

Can you tell me what these mean? Is there a place I can find a list of the codes?

Thanks very much for your help.

Pat Curry

Fluctuating data

I have used the VMSpc on my bus conversion since 2006, right after I had the bus repowered to a Cummins 450HP ISM. I currently run the VMSpc with Version 3.0, Build 1.

During recent trips, I have found some of the data displayed fluctuate consistently, up and down, usually by more than 10%.

Some of the gauges are stable, those being oil pressure, coolant and oil temps, miles, all the mileage (odometers), mpg, gph, cruise and speed.

The ones that vary constantly as said above are:
tach (rpm), turbo (boost), Power (HP), Torgue and Load (%). .

I am using a ASUS netbook computer with Windows 7.

Any help. What am I dealing with. I ruled out connection problems due to the stability of some data, but fluctuations of others. Could it be my Engine ECM? If so, what can be done about it?


Fuel Consumption reading does not record

Over the past few trips I have noticed that the Fuel reading in the Odometer gauge as well as the Tank Minder for my VMSpc software is not changing, even after traveling over 100 miles at times. It will occasionally update at random distances traveled but the most recent occurrences have been over 100 miles. The analog fuel gauge in the dash seems to be working fine. All other gauges in the VMSpc software are working fine. Any ideas or corrective measures would be appreciated.


Where to buy

Can I buy a VMSpc kit directly from Silverleaf? If not , where?

Thanks, Kevin

VMSPC Classic?

Saw a reference to a classic version of VMSpc for older coaches (1998 with a Cat diesel). Is this still available? Do I lose any functionality over a standard version?

Thanks, Kevin

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