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2
2.4.5
Inputs
The inputs of the scanner are on the Input Signal A and B connectors (Figure B, 1 and 2)
and on the 25-pin I/O connector (Figure B, 5) on the body of the DX8200.
These inputs are called ENC, PS1 and PS2.
ENC is the Encoder input. In PackTrack™ operating mode, it detects the conveyor speed.
PS1 is the main presence sensor. The yellow LED (Figure B, 12) indicates the PS1 is active.
PS2 can be used as the stop signal for the reading phase.
All inputs are optocoupled and driven by a constant current generator; the command signal is
filtered through an anti-disturbance circuit which generates a delay of about 5 ms for PS1
and PS2, and 500 µs for ENC.
Connector
25-Pin
A and B
25
12
14
13
12
14
2
15
24
10
15
11
DX8200 Connector A and B
DX8200 Connector A and B
22
Name
Function
PS2+
PS2-
PS1+
PS1-
ENC+
ENC-
A2
+
12/14
13/15
A1
Figure 22 - Presence sensor input PNP command
A2
+
12/14
13/15
A1
Figure 23 - Presence sensor input NPN command
presence sensor 2 signal (positive pin)
presence sensor 2 signal (negative pin)
presence sensor 1 signal (positive pin)
presence sensor 1 signal (negative pin)
encoder signal (positive pin)
encoder signal (negative pin)
PRESENCE SENSOR
VS
PS +
PS -
GND
PRESENCE SENSOR
VS
V
PS +
PS -
GND
Ground
DX8200
Signal
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