1. Communications basics (read this first)
2. Not Receiving Events from the door controller(s)
3. Database mis-match
4. Comms Analysis - Establish which door controllers are responding
   1. What to do if doors do not respond (No Ans)
   2. What to do if you get data errors
      1. Test one door locally to the protocol convertor
         
         

Test one door controller locally to the protocol convertor

1. Connect one door controller directly into the protocol convertor
   1. remove the door controller from its current location
   2. connect it to the protocol convertor on a short cable
      • network connections only
   3. connect 12V to the power terminals of the door controller
   4. use the network test utility to check the door controller
2. If the previous step fails
   1. You have a fault in the protocol convertor, the door controller, the serial cable, or the PC COM1 port.
   2. If you have another door controller, you can repeat the test, working on the principle that you are unlikely to have many of the same component faulty.