ER-102 displays SynC no response

Upgraded 101 and 102 to most recent version. 102 is just frozen with “sy” displayed in part screen and “nc” displayed in group screen.

Is this normal?

Not normal. The sync message means the two modules are unable to communicate. Please check the connection between the ER-101 and the ER-102.

Thanks Brian, changed ribbon cable and they are talking now.

When you have a chance, I would mark that cable clearly so that you never connect it to power.

This happens to me as well, @odevices.

  1. When starting up, the displays show the firmware numbers (2.07 for ER-101 and 2.24 for ER-102).
  2. Then, three seconds later, the ER-101 displays 14-bit and ER-102 displays SY NC, and they do not respond to any commands.
  3. I could upgrade the ER-102 firmware to 2.24 via SD card, so the module is functional
  4. I can use ER-101 if not connected to ER-102
  5. I tried two different cables between ER-101 and ER-102 and still does not work.
  6. Connector pins are OK, not bent or broken.