PWM Input
I have an application that requires using a PWM input to control the brightness of a MD4 5 inch non-touch display. The input is to be wired on C4:1 of a XC21 module. The input runs at a duty cycle of 10-90%.
Unfortunately for me, this is an optional input on the overall system. It is possible, that the PWM input is not available. If this is the case, the brightness would be controlled by a discrete switch.
My plan was to monitor the PWM input value, and if the PWM input was 100%, then I would go to a predefined brightness. If the PWM input was 0%, then I would go to a different predefined brightness. Any value between 10% and 90%, I would have the brightness of the MD4 set to the PWM value. As I see it now, I am not able to set the PWM input value to read from 0-100%. The default values for these types of inputs are 5-95%, and I can adjust them to cover 1-99%. This would be fine if the input was always a PWM type, but if the vehicle does not have this optional switch, then my PWM value would be 0% or 100%.
Is there anyway that I would be able to accomplish this, without have to make an adjust item?
Wrong IdTag! Error on MD4
On two separate machines now (with identical systems) we have received customer reports of an issue of the IQAN system stopping functioning during machine operation.
On the MD4, the screen will say STOP System Message: IQAN-Master Wrong IdTag! system
I have been told that power cycling will not fix the issue. The only way to resolve is to unplug the Deutsch connector from the back of the MD4 and then plug it back in.
This is an intermittent issue. The machines can run 100+ hours before the issue repeats.
The customer was advised to check resistance on the ID Tag (resistance was correct) and to check the pins and wiring condition at the MD4 for any anomalies or corrosion (nothing identified).
Do you have any guidance on this issue?
Is there a chart of the master and slave controllers that I can use as a quick reference for making my own?
Battery for MD4
I think that inlcuding an internal battery would be interesting in order to maintain RTC values.
Thanks.
fantastic display
MD4 problems when backlight is 70% or above.
If you adjust backlight in the MD4 higher then 70% the screen brightness gets unstable starts vary in brightness up and down.
VREF Error
First of all, I'm very happy to see this online community, We have been needing an IQAN development/troubleshooting/idea-sharing place for a while, and I'm happy to be a part of it,
My question is:
What exactly does a "VREF Error" message mean when it is not associated with an input channel? We have a MD3 connected to 2 XA2 modules. Intermittently, a system message will display that reads: "XA2.0 VREF Error 2.2V"
The system runs on 24VDC.
What conditions could possibly cause the VREF on an XA2 module to dip so low? Again, the VREF error is not indicated as being associated with any particular input -- just an XA2 module. If the system/battery voltage drops low, does the reference voltage regulator have trouble maintaining 5 volts? Wouldn't the system just shut off before that happens?
Has anyone experienced this before?
Thanks!
Diode suppression on XC21, 22, 23 outputs?
We are looking at energising automotive relays using the outputs on either the XC21, 22 or 23. Do we have to use relays that have diode suppression in parallel to reduce the risk of shortening the life of the output?
G2 modem with Verizon SIM card
Also, I have not used those modem features before. Can someone indicated the costs associated with the Proemion registration fee?
Thanks!
Customer support service by UserEcho