Contents
vii
System stopped working ........................................................................19-6
Detailed fault finding .............................................................................19-7
Card(s)............................................................................................19-7
No cards working......................................................................... 19-7
Few cards not working ................................................................. 19-7
Single card not working................................................................19-7
Reader/antenna..............................................................................19-7
No transmit range ...........................................................................19-7
Is the Controller polling the reader?..............................................19-7
Is there power to the Controller?................................................... 19-8
Low transmit range .........................................................................19-9
Low receive range with a reading head............................................. 19-9
Low receive range with a loop antenna........................................... 19-10
Controller and reader modules ......................................................19-11
Is there power to the Controller?................................................. 19-11
Is the Controller polling the reader?............................................ 19-11
Are the comms working? ...............................................................19-12
Is the correct software running? ................................................. 19-12
Is the correct Comms module fitted?........................................... 19-12
Is the PC Com port OK? ............................................................. 19-13
Is the RS232/RS485 Selection OK? ............................................ 19-13
Are the cables too long? ............................................................. 19-13
Checking the RS232 connections at the PC................................. 19-13
One or two controller systems only -........................................... 19-14
checking the RS232 connections at the controller ....................... 19-14
Multiple controller systems - ...................................................... 19-14
checking the RS232 connections at the Comms module .............. 19-14
Checking the RS485 Connections downstream from the
Comms module to the controllers ............................................... 19-15
Appendix 1 Wiring diagrams................................................... A-1-1
Appendix 2 Programming cards.............................................. A-2-1
Appendix 3 Wiring and setting up a door for anti-passback..... A-3-1
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