Error "No WIU/TIU Found"

Update: downloaded the Premium version of the app thinking I needed to add tracks now that I have two tracks and get the error Code”No WIUFound”. 

Rick,

You didn't say, however, I expect that the error is coming up when you refresh teh app, correct?

Is the TIU LED on the WIU lighted? If not, check that the cable between the TIU and WIU is connected properly.

Also, verify that the TIU is getting power from either Fixed #1 Input or the Aux. Power port. The WIU will turn on the TIU's red LED but does not provide power for its signal generators.

This and a whole lot more about DCS WiFi is all in MTH’s “The DCS WiFi Companion 2nd Edition!" This book is available from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at MTH's web store!

Barry: Getting the error when I try to add an engine or a track. The TIU is getting power and I have power to both tracks as the caboose's are lighting up. The WiFi light is on and the TIU light is on on both the WiFi Unit and the TIU. I have the 750 turned up full also.

Do you have the latest software loaded into everything?

Can you disconnect the new track easily?

Rick,

The TIU is getting power

Where from?

Barry: With the WIU unplugged from the TIU I have 19.7 Volts on both tracks. With the WIU plugged into the TIU I have 19,7 Volts to both tracks, I guess my answer to where is the TIU getting power it would be from the Z750. Both the DCS hand held and TIU wire updated to the latest software version before I started and installed on the first loop of track. I posted a video of an engine running under the control of WiFi. All was working well until I added the second track. I will disconnect the second track and see what happens.

RJT posted:

Barry: Getting the error when I try to add an engine or a track. The TIU is getting power and I have power to both tracks as the caboose's are lighting up. The WiFi light is on and the TIU light is on on both the WiFi Unit and the TIU. I have the 750 turned up full also.

That part stuck out to me as the 750 brick only has one setting--full power. Unless the Z-controller is connected, then it's output can be something other than "full". But that is not used when powering a TIU, soooo...

---PCJ

i think you need more power to the shields scotty

Rick,

One more time...where is the TIU getting power for itself and exactly where is the Z750 connected? Is the Z-Controller being used?

It must be getting power either from Fixed Channel #1 Input or from its own Aux. Power port.

If you aren't putting power into one of those places, you won't be able to add engines.

Barry: The TIU is getting its power from the Z750 Controller thru Fixed 1 Voltage. Did some troubleshooting this morning and when I disconnect the second track everything runs as advertised. When the second track is connected thru Fixed Voltage 2 the iPad and iPhone both get an error "No WIU/TIU Found" same error when trying to add a track. When I select add a track the only options are Var 1 and Var 2 Fixed 2 is not an option.

Did some additional troubleshooting and I can load the second track when I with it the 1 Fixed Voltage but still only 1 track at a time. but with both tracks in the circuit I am getting the error still. I can only connect and run 1 track at a time. The TIU is not seeing both fixed voltage tracks. My next step will be to use the hand held with the WiFi disconnected.

your second track must be causing the problem when connected you need to check your wiring of your layout!

why don't you try just powering the second track only with your first track disconnected and see if that works, I suspect it will if wired correctly. read the dcs companion excellent book and can help you with your track wiring!

I would try using fixed 2 only and test on both tracks one at a time you must have the aux powered to make the tiu work. try that and get back to us ok

that way you will be testing your tiu fixed 2 operation!

Alan: The wiring is all good and the second track does work as I was able to load the locomotive on it. Something I am not able to understand but have not gone thru Barry's Second Edition DCS book as that is what I have. Does plugging the 750 brick into the Aux Power Plug on the TIU supply power to all four of the output to all four tracks?  I have never used that plug as I have always used PW ZW's connecting to each input with inline fast blow fuses installed.

RJT posted:

Alan: The wiring is all good and the second track does work as I was able to load the locomotive on it. Something I am not able to understand but have not gone thru Barry's Second Edition DCS book as that is what I have. Does plugging the 750 brick into the Aux Power Plug on the TIU supply power to all four of the output to all four tracks?  I have never used that plug as I have always used PW ZW's connecting to each input with inline fast blow fuses installed.

no, it only powers the TIU

Rick,

If you want to use both tracks with both connected, just make sure that your Z1000, without the Z-controller, is connected to both Fixed 1 and Fixed at the same time. If Fixed #1 isn't getting power, Fixed #2 will not find engines.

If you're using the Z-Controller because you cannot connect teh brick directly to the TIU, MTH sells a part #50-1017 
TIU/Barrel Jack Adapter Cable to allow direct connection of the brick to a TIU channel. Then, just jumped the red and black Fixed #1 inputs to those of Fixed #2.

This and a whole lot more about DCS is all in MTH’s “The DCS Companion 3rd Edition!" This book is available from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at MTH's web store!

This and a whole lot more about DCS WiFi is all in MTH’s “The DCS WiFi Companion 2nd Edition!" This book is available from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at MTH's web store!

Barry: I am using a Z750 with the controller and have connected the output of the controller to both fixed voltage inputs of the TIU and connected both fixed voltage outputs of the TIU to each track just as you would do if using the hand held remote controller nothing different. I am going to try and use the hand held as a troubleshooting tool to see if it will see both tracks and if that works not sure what would be next. Question could my TIU just be to old to see both tracks thru the WiFi. I heard something about a chip issue in older TIU's and the use of WiFi? Also thinking about hooking up my PW ZW as that is what I was using with no DCS issues at my old house just need to find the fuse links before I do that. Used them for over 10 years and never had a problem. Just fo FYI I am currently only using PS3 Locomotives at this point. Can load and run each separately but not together.

Rick,

I am going to try and use the hand held as a troubleshooting tool to see if it will see both tracks

Good idea.

Question could my TIU just be to old to see both tracks thru the WiFi.

No.

I heard something about a chip issue in older TIU's and the use of WiFi?

No such issue exists.

Also thinking about hooking up my PW ZW as that is what I was using with no DCS issues at my old house just need to find the fuse links before I do that.

Much better than the Z750. Regardless, lose the Z-Controller.

Just fo FYI I am currently only using PS3 Locomotives at this point. Can load and run each separately but not together.

Whaat exactly does that mean?

Much better thanking the Z750. Regardless, lose the Z-Controller.

PW ZW will be used in place of the Z750 Brick and Controller! I an guessing you meant "Much Better thinking" as that would be my only option to lose the Z750 Controller.

Just fo FYI I am currently only using PS3 Locomotives at this point. Can load and run each separately but not together.

My iPad will see and run either as a single track setup, but does not see locomotive or track when I have both tracks connected. The PS3 was just information in case those following  this thread wanted to know.

hi can you draw us a schematic of have you have the layout wired both at the same time , then maybe someone here will be able to see your problem ok?

Alan

Rick,

My iPad will see and run either as a single track setup, but does not see locomotive or track when I have both tracks connected.

That makes no sense at all. There's something that uyou've not yet told us.

Also, what happens when you use the DCS Remote instead of the app?

Barry: Will check with the hand held tonight and update after I do. Not sure what I am missing with both tracks connected to the TIU/WIU I get error code no WIU/TIU Found. With only one track connected and does not which one is connected everything works as advertised. I downloaded the Premium App. Now something I did notice today was that my phone had not update to the Premium App until I went thru your book and tried it again and then it updated but took several attempts before the phone updated. Have not tried anything since then but will finish with the hand held tonight. It is frustrating me very much. If at some point a conversation needs to be held I am available when ever you thing it is time. My number is in my profile 717.

Barry: I removed the Z750 and controller and installed my PW ZW everything works with the hand held DCS Unit but when I try to use the WiFi I get the same error code with both my iPhone and iPad and I have downloaded the Premium App. When I open the app both engines show Inactive and I try to move them to active and get error Make Sure you are on the MTH WiFi. The TIU and the Handheld have both been updated to 6.1 and the TIU is Rev H2. Both the phone and iPad are holding the DCS WiFi Signal and both the iPhone and iPad are at the latest software version. I am open to suggestions!!!!

Rick,

A few considerations:

• Are you absolutely sure that the TIU has DCS 6.1 and that the WIU has version 1.1 firmware?
• If the USB to serial cable that you're using to connect the TIU and WIU is an older one, I'd suggest trying to swap it out for a current production cable.
• Is the DCS signal turned on in the app for both TIU channels?

What I just don't understand is how the app can only see one TIU channel at a time and, if both channels have power, it can't see either of them. Am I understanding this correctly? Because that simply isn't possible to do if all of the software is at the latest levels: DCS 6.1 for the TIU; firmware 1.1 for the WIU; DCS App version 3.0.2.

As a last resort, have you tried resetting the DCS App from the More... Screen/App Settings?

Both the phone and iPad are holding the DCS WiFi Signal

What does that mean?

• Are you absolutely sure that the TIU has DCS 6.1 and that the WIU has version 1.1 firmware?
•  The TIU and Handheld were up dated  2 weeks ago and the version on MTH's web site said it was 6.1. I just purchased the WIU in June and according to the label it is at Version 1.0. App Version 3.1.0 just downloaded on Sunday 21 July.
• If the USB to serial cable that you're using to connect the TIU and WIU is an older one, I'd suggest trying to swap it out for a current production cable.
• Just purchased from Amazon last week it is a "Plugable USB Serial Adapter USB to RS-232 DB9 Serial Adapter"
• Is the DCS signal turned on in the app for both TIU channels?
• Turned on all track options and when I go to Select Track Screen it shows All Track.

• Both the phone and iPad are holding the DCS WiFi Signal 

  What does that mean?

• When I get the error I immediately go back to Settings to insure I still have the DCS WiFi Signal selected and I do. Referring to your section in the book that talks to losing the DCS WiFi and connecting to your home network.

Barry: Went thru the app found where to turn on track selections and after went to add the second locomotive and get the No WIU/TIU Found. Turn off Fixed 2 and things return to normal but only one track selection. It has something to do with the second track and I am at a wall just don't understand and don't know enough to figure it out. The app should have been the latest being purchased on Sunday, 22 July and the WiFi unit was purchase in June but no telling how long it was on the shelve in the store. Will read tonight on how to upgrade the WIU and go from there.

Rick,

I see  3 issues or potential problems.

just purchased the WIU in June and according to the label it is at Version 1.0.

The WIU must have version 1.1 firmware. You have toupdate it to 1.1.

Went thru the app found where to turn on track selections and after went to add the second locomotive and get the No WIU/TIU Found

Where in the app did you go and exactly what did you do? To use Fixed Channels in DCS mode you do not have to "turn on track selections" at all. That's only for TIU Tracks on Variable Channels.

Turned on all track options and when I go to Select Track Screen it shows All Track.

That's completely irrelevant. You should not be anywhere near the Track Control Screen.

You need to navigate to the More... Screen and select Advanced Features. Then, select System Settings and then TIU Settings. Select the TIU and make sure that the DCS signal is on for all 4 channels.

Barry: 

The WIU must have version 1.1 firmware. You have toupdate it to 1.1.

I could not find in your book or MTH website how to update the WIU.

Rick,

Barry:  Your right completey missed it was looking in the wrong place, My Apologizes.

Will perform upgrade this afternoon. Does this have to be done on a Windows PC like the TIU upgrade? As I am reading the instructions I should be able to download the upgrade from my iPad!

Where in the app did you go and exactly what did you do? To use Fixed Channels in DCS mode you do not have to "turn on track selections" at all. That's only for TIU Tracks on Variable Channels.

I was miss understanding this.

You need to navigate to the More... Screen and select Advanced Features. Then, select System Settingsand then TIU Settings. Select the TIU and make sure that the DCS signal is on for all 4 channels.

Done and the only ones not turned on were the Variable Tracks and did turn them on.

Installed the Z750 and plugged into the Aux Power Point of the TIU as I had and thought it may help after reading the advantages of applying Aux Power to the TIU. Turned power on, removed power from Fixed 2, refreshed and was able to start locomotive on Fixed 1, while Fixed 1 Loco was running brought power up on Fixed 2 went to add engine and No TIU/WIU Found. Removed power from Fixed 2, refreshed and was able to shut down Fixed 1 Loco. What ever is happening occurs when power is applied to Fixed 2. 

I think I may be hitting the MAX Frustration point with this. I just don't understand why this issues occurs when applying power to Fixed 2 on the TIU! I am missing something and not sure what it is. I have a failure to communicate and not sure where the failure is or with whom, not understanding the book or not fully and properly explaining the issue!

Rick

What are supplying power to the fixed 1 inputs with?

What are supplying power to the fixed 2 inputs with?

It appears you only have a Z750 BRICK and a Post War ZW.

IF you are powering the AUX port of the TIU with the Z750 Brick DO NOT USE THE COMMANDER ANYWHERE! Just the Brick!

If you are using the ZW for the TIU one handle needs to go to the Fixed One and A DIFFERENT HANDLE to the Fixed 2.

If after doing this only fixed one works and not fixed two on the second handle  -  SWAP wires on the handles and see if stays the same. If Fixed ONE again works but not fixed two you could have a bad ZW!

Curtis

Let me insert a piece I left out. Swap the wires on the tiu so the handle that did work on fixed one is now on fixed two, If fixed two works and fixed one does not you have a bad ZW.

Sorry after posting I realized the wording was not clear.

Curtis

Curtis:

What are supplying power to the fixed 1 inputs with? PW ZW

What are supplying power to the fixed 2 inputs with? PW ZW

It appears you only have a Z750 BRICK and a Post War ZW Yes

IF you are powering the AUX port of the TIU with the Z750 Brick DO NOT USE THE COMMANDER ANYWHERE! Just the Brick! Correct there brick is connected directly into the TIU Aux Power Port.

If you are using the ZW for the TIU one handle needs to go to the Fixed One and A DIFFERENT HANDLE to the Fixed 2. That is how it is connected.Using both outside handles.

If after doing this only fixed one works and not fixed two on the second handle  -  SWAP wires on the handles and see if stays the same. If Fixed ONE again works but not fixed two you could have a bad ZW! Everything works normally with the DCS Handheld Unit and I have power on both tracks and can control the power with the levers on the ZW so everything tells me the ZW is working as advertised. I had the same issues when I was using the Z750 with the controller. I came to the conclusion the 750 did not have enough power for both loops of track that was why I went to the PW ZW.

Thank you for your input at this point I am stumped.

I personally ran a 30 x 8 layout with one 750 brick so I am somewhat confused on why it would not power two small loops. UNLESS you have several lighted cars and are running lashups.

I will go back and re read the entire thread. I will tell you that in my eyes Barry is the best of the best. He looks down at everyone else when it comes to knowledge of the DCS System. He has bailed me out so many times I am surprised he has not blocked me. LOL. Really though he is the go to guy but sometimes we just do not see it as he explains it. Back up drink a nice cool refreshing 7Up and read again slowly. Helps me I know.

Good Luck. I will continue to follow this.

Curtis

Rick,

Will perform upgrade this afternoon. Does this have to be done on a Windows PC like the TIU upgrade? As I am reading the instructions I should be able to download the upgrade from my iPad!

You can do this using a web browser on a Mac, a PC, a smartphone, or a tablet. You just need an Internet connection. The book spells all of this out in detail.

Just to recap, all of the following is true:

• The Z750 is connected to the Aux. Power Port of the TIU.
• Both handles of the ZW are powered-up.
• Each handle of the ZW is connected to one of the two Fixed TIU channels.
• The DCS Remote can operate both TIU Channels simultaneously.
• The DCS App can only access engines on Fixed Channel #1.
• Attempting to access Fixed Channel #2 using the DCS App results in an error "No TIU/WIU Found".

Is this correct?

If so, what happens when you go to More..., select Advanced Features, select System Settings, and select TIU Settings? Does the app see the TIU?

Barry: Have not completed the upgrade yet, downloaded it to my iPad and it defaulted into an Adobe Reader on my iPad and also have it on my desk top on my MAC.

• The Z750 is connected to the Aux. Power Port of the TIU. YES
• Both handles of the ZW are powered-up. YES
• Each handle of the ZW is connected to one of the two Fixed TIU channels. YES
• The DCS Remote can operate both TIU Channels simultaneously. YES
• The DCS App can only access engines on Fixed Channel #1.CORRECT
• Attempting to access Fixed Channel #2 using the DCS App results in an error "No TIU/WIU Found". CORRECT
• If so, what happens when you go to More..., select Advanced Features, select System Settings, and select TIU Settings? Does the app see the TIU? NO "ERROR NO TIU FOUND"

If I remove power from Fixed 2 and refresh the App I am able to now find the TIU and control Fixed 1.

Rick,

Swap the TIU channel outputs between Fixed #1 Output and Fixed Channel #2 Output. See if the problem moves to the track connected to Fixed Channel #1. Don't change anything else.

Barry: I have connect the second track to Fixed 1 just to make sure I had no issues with it and was able to control the second track thru Fixed 1. Are you suggesting to just swap both leaving both connected I will do that tomorrow hopefully. I have to travel for work Thursday and Friday so not sure how much I will be able to get done with two very long days for work. THANK YOU so much for your help and  patience with this entire issue.

Rick,

Please let mne know what works for you.

Yes, do only that and, with both tracks connected, see what works.