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A2B 2 Step discovery Question

Category: Software
Product Number: 0
Software Version: SigmaStudio+ 2.1.0

HI Sir

I'm doing the A2B discovery test .

  • Below setup: 
    • 4 meters cables for each node 
    • AD2437 EVK for main node --> The first AD2437 sub node -->The second AD2437 sub node -->The third AD2437 sub node
    • It was able to discover all the sub nodes under 2 step discovery mode.
  • Next Set up 
    • 30 meters cable from the first AD2437 sub node -->The second AD2437 sub node. Others are still keeping 4 meters cables.
    • it was not able to discover under 2 step discovery mode, it shows I2C error.
    • But it was able to discover when i uncheck "Enable Two step discovery ".
    • What's the reason for this?
  • Hi  

    This is due to the response cycle value issue.

    You need to provide the exact cable as per your actual set up too. in the schematics we can see the cable length is still 4m.

    For updating it correct you may try with latest SigmaStudio Plus 2.2 and a2b plugin 1.3.1

  • HI Arunk

    Thanks for your reply.

    Yes, it was able to discover under 2 step discovery mode when i set the cable length to 30m in schematic.

    But my question is: if i don't set the cable length in schematic (Keep 4m), I already turn on the Auto-calculate for the response cycle.

    I update a new version SigmaStudio Plus 2.2 and a2b plugin 1.3.1.

    why I still see the same behavior?

    • It was not able to discover under 2 step discovery mode, it shows I2C error 
    • But it was able to discover when i uncheck "Enable Two step discovery ".  

    why the set up are different between "Enable Two step discovery" and "Disable Two step discovery"?

  • HI Arunk

    Thanks for your reply.

    Yes, it was able to discover under 2 step discovery mode when i set the cable length to 30m in schematic.

    But my question is: if i don't set the cable length in schematic (Keep 4m), I already turn on the Auto-calculate for the response cycle.

    I update a new version SigmaStudio Plus 2.2 and a2b plugin 1.3.1.

    why I still see the same behavior?

    • It was not able to discover under 2 step discovery mode, it shows I2C error 
    • But it was able to discover when i uncheck "Enable Two step discovery ".  

    why the set up are different between "Enable Two step discovery" and "Disable Two step discovery"?

  • HI  

    Looks like thread was closed without attending your query.

    For understanding the two step discovery , please use this url:wiki.analog.com/.../appendix-l