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Watchport/P (Proximity Sensor)
The Watchport/P uses an RS-232 modem signal interface. The sensor acts as a 'proximity'
detector; that is, if an object comes within range, the sensor will raise (and then lower) its DSR
signal.
The Watchport/P detects the presence of objects within a user-selectable range of 0.5 to
1.5 meters (1.64 to 4.9 feet) of the device
second. However, since such frequent readings can slow processor speed, the default is set to 1
read per 3
seconds.
To access the panel, pull tab out and lift up cover. Push firmly to close.
Red LED
This light indicates that the sensor is receiving some reflection of its signal but
not enough to trigger the amber light. A persistent red light may mean that the
sensor needs service. DSR is unaffected.
Amber LED
This light triggers the sensor. DSR goes high, so a message is sent.
PNP switch
This is the default setting. Watchport/P functions only with PNP selected.
NPN switch
This setting is not used.
L. ON switch
This is the default setting. DSR goes high when something comes within
proximity of the sensor.
D. ON switch
This setting changes the sensor so that DSR goes high when something is NOT
within proximity of the sensor.
SENS. knob
Adjust potentiometer with a small screwdriver. Adjusting higher (H) will increase
sensitivity, lower (L) will lower sensitivity.
Command
Description
Tells about the command set available for this
?<CR>
Watchport.
Tells what kind of Watchport is connected.
I<CR>
Watchport Installation Guide (90000406 Rev. D) – Page 12
and can give a reading as frequently as 100 times per
Watchport/P Panel Description
Watchport/P Commands
Return Value
as described in this
section
Watchport/P<CR>
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