Public Scope and cycle utilization
How public scope channels impact overall cycle utilization and multi master buss load.
Thank you
Paul
Public scope means that all other channels within the same master module application can read the channel value and status, regardless of the function group these other channel are located in.
(The exception is channels in instances of external functions, these do not see public scope from the main project)
But by using public (and private) scope, you can reduce the usage of FGI channels. Each FGI use a small amount of time to calculate, when you have hundreds of FGI:s that adds up and there is a potential saving.
Also see the new 6.02 feature for propagating function group outputs, can be used to eliminate mid-level calculations channels.
To transfer a channel value and status to an application on another master, you use Master bus APPOUT/APPIN (consuming plenty of bandwith). Or send the value using J1939/Generic CAN.
Display pages and the menu system can read channel values from any application, this is done automatically via the Diagnostics bus. The update rate is limited, but the diagnostics bus can get to a quite high bus utilziation, a good reason to avoid mixing it with too much other traffic.
COUT not available due to Pin conflict
I just encountered a situation in IQANdesign 6.02 where there was an available COUT channel on an XC43, but it does not let me choose it from the Add button. I'm guessing it doesn't show up because it needs to be a unidirectional version, as I am using the other LS as a DOUT HS + LS. If I right click on the channel that appears to be not available I can add it.
Low VIN error even with "Alarm low = no"
In IQAN 6.02 I get the VIN low error and VIN high error even if errors are disabled for an input. Please see the screenshot:
low Vin error not showing back up after power cycle
I have an issue on a project where a vin error fails to show up after clearing the error and cycling power on the module. Currently the error will fault and show 0 mV on the input as is should, but after acknowledging the message I expect the error message will come back up after i power cycle the module. It fails to show the error again even thought the sensor is still disconnected during the power cycle.
The only way I can make the error reappear is to reconnect the sensor and then disconnect it.
Does anyone have ideas on what might be causing this to not show back up after power cycle? It has always worked for me in the past on projects.
Improper syntax in IF / Then / Else / Endif Help
Just noticed when looking into the Qcode syntax help window, the Help for the IF/THEN/ELSE/ENDIF appear to be incorrect:
The endIf statement appear to have a space...
Using 6.01. Not upgraded to 6.02 yet...
multiple address on multi component system
Hi IQAN Community,
I am working on a multi-component system where there is a MD4-7 connected to an XC23 through a J1939 CAN bus.
Both of these devices have an ID tag corresponding to an address 4. There is no problem during most days, but I do have intermittent errors like the one below.
Any ideas on what causes this error message?
Thanks,
CAN Module documentation
Is there a way to print the list with 'name identifier bit offset length..' for a CAN module.
If not it should be implemented and perhaps integrated in the project documentation function.
A copy function so that one could paste for example in excel would also be nice.
IQANdesign crash saying "One or more errors occurred", version 6.01
Save your IQANdesign project on a network drive from Windows Server 2019
Right click the folder and select "Always availible offline"
Turn off your wifi and connect network cable to MD4
IQANdesign usually works fine in this setup, but when sending project to MD4 there is a 25% chance of a crash.
When saving a changed project there is a 10% chance of a crash.
This happens most often the first time IQAN is used during the day. I have sent in a few bug reports from the program.
Module name does not update instantly
When changing the name on module on 5.06 the name in centre of the page does not update until you move away from the module and back again.
dropdown menu access when goes offline after simulation/online mode iQanDesign 6.01.6.5518
We are unable to access dropdown menu when we quit simulation until we change the page and come back.
This seem to be the same issue when connected online. The access to dropdown are not refreshed and see to be updated only on page refresh.
Normal ?
Customer support service by UserEcho
