302UM0017 Rev 01
PD230 Enhanced Detector User Manual
Page 19 of 37
Case 2:
(AB LOGIC Presence Mode)
Forward direction
A - Vehicle Enters Loop1
B - Vehicle Enters Loop2
C - Vehicle Exits Loop 1
D - Vehicle Exits Loop 2
This is the correct forward
operation for Presence
AB Logic
Case 3:
(AB LOGIC Presence Mode)
Reverse direction
A - Vehicle Enters Loop2
B - Vehicle Exits Loop 2
C - Vehicle Enters Loop1
D - Vehicle Exits Loop 1
Typically caused by loops
being too far apart or very
small vehicles
Case 4:
(AB LOGIC Presence Mode)
Reverse direction
A - Vehicle Enters Loop2
B - Vehicle Enters Loop1
C - Vehicle Exits Loop 2
D - Vehicle Exits Loop 1
This is the correct reverse
operation for Presence
AB Logic
Summary of Contents for PD230 Enhanced Vehicle Detector
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