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J1850 CRC8 Generating incorrect checksum

george zalesski 2 years ago in IQANdesign updated by Gustav Widén (System support) 2 years ago 8

HI,  i have been struggling with this for a while now.   Keep getting wrong checksum. 

I'm sending out this data   and getting checksum incorrect checksum.  the only difference in these massages  is the CVC


Receiving with CAN identifier (YES):

Image 3805

for example the checksum for fist msg should be 0x89 not 0x94


Thanks for any help with this.

George

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Simulink with lots of inputs and outputs

Marcel 2 years ago in IQAN toolbox for Simulink updated by Gustav Widén (System support) 2 years ago 1

We are working with a Simulink model with a lot of in and outputs (20+ at the moment). Every time I get a new model (we are testing the machine) I need to relink al the in- and outputs by hand. I foresee I have to do this a lot in the near future. Is there an easy way so I don't have to relink al the in- and outputs by hand every time the simulink model is updated? Or combine all or some of the inputs to one for example. Now we use digitals, integers and reals.

Thank you!

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Simulink model iQan crashes with Webview

Marcel 2 years ago in IQANdesign 0

Hello,

We are trying to load a Simulink model in iQanDesign. We did some tests with a simple demo model with the Option 'Webview' on and it worked. Now, after making a new (bigger) model and Webview on, iQan is trying to load the model when I add it, but than crashes (stops and disapears without a message). If we try to load the same model without 'Webview' it works. Webview can be helpfull for us at this moment.

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COUT configuration for Danfoss PVHC

Deanne 2 years ago in IQANdesign updated 2 years ago 11

Does anyone have experience with programming a Danfoss PVG with PVHC 12V coils? I'm trying to configure with COUTs and PWMs with an MC42 but I keep getting an open load error. Trying to get joysticks to control the current output and I am getting a very small mA reading

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Converting CAN Joystick signal

Deanne 2 years ago in IQANdesign updated by Tim Reen 2 years ago 3

I am configuring two 2-axis joysticks. I am able to read the raw CAN signal of the joystick's position. I am wondering if I need to convert this signal further to then control a cylinder (current out). This is what I have so far, but not entirely sure as I am trying to program non-IQAN joysticks. 

Image 3790

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Can PIN codes be changed on adjust items from an MD4 screen?

jerry rowe 2 years ago in IQANdesign updated by theo mastenbroek 2 years ago 1
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Not a bug

IQANDesign 6.07 COUT program limit is 1350 mA?

jerry rowe 2 years ago in IQANdesign updated by Gustav Widén (System support) 2 years ago 3

Why is the IQANDesign 6.07 COUT limit 1350 mA? 

An MC43 shows 2500 mA limit. How can the current be increased within the program?

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JPOUT Hex changing value on the bus

Michael Carlyle 2 years ago in IQANdesign updated by Gustav Widén (System support) 2 years ago 1

I am sending a 4 byte Hex JPOUT (0x45564153 starting on bit 33).  When sniffing the bus - the 53 is being sent as 80.  Is there some reason for this?  I changed it to two 2-byte JPOUT's and it seems to work as a workaround.  Is there a problem with how Iqan handles integers in this case?

Image 3785

Image 3786

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changing state when a button needs to be held

mehradhqs 2 years ago in IQANdesign updated by Kerry Brock 2 years ago 1

Hello. I am a beginner in using IQAN and have some issues: 1 - I have created a finite state machine for 2 modes. I have also created some function groups for some functionalities. I want certain function groups to only run in a certain mode and be blocked in the other mode (Like a top level conditional statement). However, apparently function groups do not have the option to be blocked like signals. Is there a way around this? Also, the transition happens while the operator is holding a button (name it A). So during the transition process the operator needs to be holding button A and when the button is left midway the transition is stopped (in this phase do we need an additional state? because it is neither in mode 1 or 2). During the transition between the modes I want to lock all function groups. Finally, the transition can only occur if a certain precondition is satisfied. I cannot seem to break down this problem and do it. 2 - As a final question, I have used some sensors to measure the position of a cylinder, but when I am doing a horizontal path, I need to maintain the same y axis for my end tip of the arm. I have done the kinematic calculations and have assigned vin and the cout, but because the simulation is not in real time, I do not know whether the sensor in the next cycle measuring the position of the end tip really gives a vertical lift path or not? How can I do the simulation continuously to see if my final position at the end of each cycle really have the same y coordinate. These questions might be a bit vague but again I am a beginner and would appreciate any help. thank you in advance for the help. 

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Handling HEX number in IQAN

Andy Pauly 2 years ago in IQANdesign updated by Gustav Widén (System support) 2 years ago 1

An external CANBUS node is sending Error Number as Hex-Number. The Hex Number is 2Byte long. I like to show the hex in a simple way in the display because page long dokumentation are available already for troubleshooting based on Hex Numbers. 

Is there any way to show Hex-Numbers a simple way?