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Datasheet of 301-1141-01 - WATCHPORT TEMP SENSOR
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Watchport Installation Guide (90000406 Rev. H) – Page 13
Watchport/D (Proximity & Distance Sensor)
The Watchport/D can be programmed to use either an RS-232 modem signal interface or an ASCII
command interface. In its ASCII command mode, the sensor reports the distance to the object (if any). In
its modem signal mode, 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 default mode is Proximity.
Watchport/D Commands
Command
Description
Return Value
?<CR>
Tells about the command set available for this Watchport.
as described in this section
I<CR>
Tells what kind of Watchport is connected.
Watchport/P<CR>
For the ASCII command mode:
D<CR>
Reflects the current distance. The valid range is from
20 cm to 150 cm. Otherwise, the sensor indicates no object.
nnncm<CR>
No Object<CR>
For the modem signal mode:
E<CR>
Enables monitor function. Until any other
keystroke, the sensor uses DSR to signal ‘proximity.’
OK<CR>
Mn<CR>
Adjusts sensitivity
M
is followed by a single digit:
1
(most sensitive) through
9
(least sensitive).
OK<CR>
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