Why are card updates not being activated? I am getting “unknown card” and “access denied” events?

  • Controller registries of last update entries are not registering- communication issue.
  • Verify that you properly connected the RS485 line to each panel units and that no lines are crossed;
  • Ensure that EOL (End of Line) resistors are property terminated on the RS485 network; and
  • Visit U5, below for more information on network RS485 stability.

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