0

example solution for a single 2 axis Joystick used to control dual tracks on a machine like a dozer

Andy 4 years ago in IQANdesign updated by Ryan Bland 747 2 years ago 7

Hi People

I'm relatively new to IQAN but have been programming industrial PLC's for years. A few years back I used a dual axis 0.5 - 4.5v DC joystick and an IDEC PLC to create, among other solutions on the machine a drive motor tracking system for a large machine that is about the size of a D9 dozer that used a single joystick to control fwd-rev and turning. I may not be looking that well but I cant see any example of a single 2 axis joystick that is used to control a tracking system, rather all the examples provided with the software seem to have a separate input controller for each side (like an excavator) which is pretty simple to achieve, unlike the more complex (I think) math required to handle the 2 axis to 2 separate pump dual direction control.

Can anyone point me at an example I can use for this use case?

On this same machine I used a pair of modbus over RS485 ultrasonic height measuring transducers to control the machines working head height. Does anyone know of a set of ultrasonic height transducers that can run natively over canbus, or a modbus to canbus converter that I can use to deal with that function from the IDEC solution using IQAN?

The solution I have in place has heaps of individual inputs and outputs and hence the wiring on the machine is complex and of a single hub and spoke style rather that the more distributed multiple hub and spoke that a multi controller iqan solution would provide. Ideally I would like to look at moving from the IDEC PLC solution (Not that there is any issue with the IDEC controller, just the whole machine wiring complexity)

Thanks for any guidance you can provide

Regards


Andy Saywell

0

Live measure of look-up tables

NEricson 4 years ago in IQANdesign 0

Would be nice to be able to view live, for tuning reasons, what block of the lookup table is being calculated. Not sure if its possible but it would be handy in a program of mine. 

0

is there a way to move display pages from one md4 to another in the same program?

Jesse j Kilde 4 years ago in IQANdesign updated 4 years ago 1

Is there a way to move display pages from one md4 to another in the same program? i have merged 2 programs with the intent of having all the display pages on one module. It is not allowing me to move them.

0

SMS out

P Hoekstra 4 years ago in IQANdesign updated 4 years ago 1

How to send a SMS out of a system with MD4 and GS Iot module?

Because I don't see the SMS out function

0

j1939 tier 4 message receive issue

Codie 4 years ago in IQANdesign updated by Gustav Widén (System support) 4 years ago 4

I'm having issues receiving a J1939 message. Both FF15 and FF14. They are Tier 4 emissions system data and I can see them with my CAN sniff. they show up as 19FF1500H and 19FF1500H. I have my priority set to dont care and my timeout not used and still cant bring them in. Why am i unable to read these messsages?

0
Completed

MC43FS Minimum Threshold Current

Caola, Robert 4 years ago in IQANdesign updated by Gustav Widén (System support) 2 years ago 4

It would be nice if the minimum threshold current that a HS + LS digital output was lowered. A lot of relays only have about 480 ohm resistance, putting the current draw at around 50 mA, 10 mA lower than the threshold. And the output being used as a safety outputs cannot bypass the undercurrent detection. Would 20 - 30 mA be achievable?

0

Controller sw crashing the bus??

chadi saouli 4 years ago in IQANdesign updated by Gustav Widén (System support) 4 years ago 1

I have a problem with two sw version i created v1 and v2 on (MC42) ,there was no major change other then changing the time out to" Not Used" on other controllers(air compressor and air dryer ctrl's) on the j1939 bus. when i flashed 36  it shows contact but its crashing the bus( i cannot read any message on the pcan unless i unplug the mc42) once i flash back to 35 everything works except the (air dryer and the air compressor) .

please help

0
Under review

MD4-10 screen resets to boot logo and freezes

Pierre Fagrell 4 years ago in IQANdesign updated by Gustav Widén (System support) 4 years ago 1

We have a new machine where this has happened a few times now.

Suddenly the image on the screen will freeze and stop updating.

It seems to be repeatable by using the joystick encoder at a particular screen.

We are using "External button control" to select sliders and buttons on the screen by turning the encoder.


The way to repeat the problem:

Select a slider with the encoder

Click a button on the screen which hides that slider.

Exit and enter the menu page in question

Turn the slider

Of note is also that one of the sliders never hide, even though it's "visible" object is false.

I can send the file if you like.

After a few seconds of pressing the screen it resets to the boot image and gets stuck there.

Even though the screen is stuck at boot image, MD4 and XC42 are running like normal in background.

It is possible to start and stop the diesel engine with the J1939 joystick.

It is possible to connect with iQANdesign and iQANrun to take measurements

Cycle time is 23%

CAN utilization is low.

No errors in log file.

Power cycle gets everything back to normal.

Image 2753

0
Fixed

DBC missing 32bit offset values when exporting complete CAN database

toby 4 years ago in IQANdesign updated by Gustav Widén (System support) 3 years ago 3

So when I export my complete generic CAN database, by going to the Generic CAN module, selecting everything with ctrl A and then going File-->Export-->Export CAN Database, it will export the .dbc however it is missing every 32 bit offset parameter in any paged protocol Generic Frame ins, other than in the 0 page. This does not occur if I just select a single Generic Frame In channel and export it. Any help or potential work arounds would be appreciated. Thanks

0

FINITE STATE BETWEEN MASTER MODULES LOCKING UP

RobertRoss 4 years ago in IQANdesign updated by Gustav Widén (System support) 4 years ago 1

I have a system where I have an MD4-5 connected to an MC43 in a multi-master system, using both APPIN/APPOUT and J1939 messages between them.

I have implemented a FINITE STATE MACHINE in the MD4-5 master, and send the representative code to an identical mock-up of FSM in the MC43 (with all the same links).

For some reason I have cases where the MC43 system will either revert back from one state (4) to 0 and then back again (very briefly). At other times, I can see on my screen a J1939 (or APPIN) message (since I've tried it both ways), where the input number is 6, but the FSM in the MC43 will stay at 5 and not change to 6. What is also strange is that there is no path from 4 to 0 in my FSM design (though I suspect the default value on a CAN error, even with the master bus, is 0).

Image 2745

I am running IQANDesign 6.02.7.5650 (and hope to get an update if our new license code arrives)