IO Link V_Pd_OutrunMode

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Hello Marcus,

I would like to thank you for your response!

To answer your questions:

  1. I am using the x20DS438A (Rev3) B&R interface with firmware 2.4.2.0.
  2. The communication is handles entirely by the PLC.
  3. There are no other devices connected to theIO-Link Master.
  4. The ChannelStatus value is “4”, this is both before and after the error.
  5. ModuleOk = True
  6. I have code which writes the data to the I/O mapping of the master.

Since posting I have tried the following:

  • Timing
    We have checked and adjusted the timing settings to ensure that the timing of both the PLC and the interface matches.

  • Power Supply
    We have installed a different power supply that can deliver much more power in case this was an issue. This turned out to have no effect. (The LED-strip is connected directly to the power supply)

  • Fixture
    We have used a different Banner LED strip to rule out a defect in the current LED strip.

  • Software
    The code on the PLC has been thoroughly examined for errors that could cause the error.

  • Interval
    The code has been rewritten with intervals as we thought it might be sending too much data in a short time. Even with intervals of 60 seconds, the error still occurs.

  • IO Link Master
    We have replaced the B&R IO Link Master with another one to rule out a defect.

  • IO Link Master firmware
    The latest firmware for the IO Link Master has been installed.

Some noteworthy information:

Initially, when I started controlling this LED-strip, I noticed it required 32 bytes. B&R sent me a tutorial document about using flat stream. In this tutorial, they recommend using the “LibAsFltGen” library, which includes a “Status” variable that automatically updates with an error code in case of an error

This is how the error happens:

1 I start writing to the LED strip, everything is working for about 3 to 4 minutes.

2 The IO Link error light starts double flashing and the LED-strip stops changing its lights. In monitor mode you can see that it is still responding with data when you write to it.

3 If you write 4 or 5 times, the “Status” variable of hte library changes to “33800”

The Pop up in the screenshot only shows up when you are connected to the LED-strip with the connection functions built into Automation Studio when the error happens.

Any insights you might have would be greatly appreciated!

Best regards,

Walid el Oufi