User's Manual

708UM0210-01 October 1999 Autotag-P User Manual Page: 31 of 33
6
6
6
CN5 ConnectorCN5 Connector
SYNC
GND
AUTOTAG-P MULTIPLE BASE STATION SYNC LINE CONNECTION
MAX SIXTEEN BASE STATIONS
(NB: Each base station have a different ID) MUST
CN5 Connector
1
1 1
AUTOTAG-P BASE STATION TYPICAL TRIGGER CONNECTION DIAGRAM
(The trigger (arming) input is to selectively enable the base stations polling)
11 PIN Relay
Base
PD130
INDUCTIVE LOOP
VEHICLE DETECTOR
Refer to the PD130
User Manual
301UM0010
Inductive loop
in road surface
Refer to Nortech’s Inductive Loop
Vehicle Detector User Manual
MKT01
N/O
CN5 Pin 1CN7 Pin 1
Trigger
GND
COM
RS485
CONTROLLER
Data “A”
Data “B”
GND
Earth Ground
Power
Supply
120 TERMINATION RESISTOR
120 TERMINATION
RESISTOR
-VE
+VE
A
B
A
B
Maximum
Stub Length
= 1 meter
Note 1: Refer to RS485
Addressing in section 4.3.1
See Note *1
See Note *1
A
A
A
B
B
B
COMMUNICATIONS CABLE MUST BE A TWISTED PAIR
MAXIMUM DISTANCE 1200 METERS (4000 FEET)
AUTOTAG-P BASE STATION “RS485” MULTIDROP CONNECTION DIAGRAM
THE INSTALLER MUST ENSURE THAT THE 120 TERMINATION RESISTORS ARE INSTALLED AT THE ENDS OF THE CABLE
Maximum number of readers = 32
5 Way
5 Way
5 Way
4 4 45 5 56 6 6
CN7 CN7 CN7
5
5
5