ACX7xx (ACX701, ACX781) swipe of card that is not in DB results in reader LED blinking slowly for over a minute.
Then an access events 'No response from access server' is logged in the access event log
AccessServer system variable set to an incorrect value.
For example a value of 1 will cause the ACX to attempt a remote validation to the controller with ACCNetId of 1 whether it exists or not.
Set the AccessServer to 0 (zero) if not remote validation is desired, or set it to the ID of the Primary Access Server workstation.
The old ACXs require a reset when the value of AccessServer is changed.
After making the changes reload the controller.