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3-6-1. Connecting control input
terminals
Signals are input with the external input circuit when shorted
or opened between any control input terminal and the COM
terminal.
Shorts occur from both contact and non-contact (transistor,
TTL open collector).
WP-120A
Vcc
+5V
About
20 mA
COM 19–20
o When external contact is ON, about 20 mA flows. When
using a transistor, for example, select one with a resistance
of at least 10 V and elements that allow a flow of at least
40 mA when on.
o Do not apply voltage from an external source.
PUSH switch
Example when contact
signal used
Example when transistor
used
Example when TTL open
collector used
IN
ON when IN is H
3-6-2. Control input signals
Differential pulse displacement sensor A phase, B phase
Connect a differential square wave output type displace-
ment sensor (page 22).
Force backlight lighting
Enable the backlight while this is ON.
Prevent touchscreen operation
Disable touchscreen operation while this is ON.
Force reset
Setting this to ON restarts the unit.
Switch work
These can be used to specify the work number when the
"WORK SWITCHING" setting on the WORK settings screen
is "EXT. INPUT".
WORK SWITCHING 1 is the LSB and WORK SWITCHING 8 is
the MSB.
WORK NUMBER
8
1
OFF
2
OFF
3
OFF
4
OFF
5
OFF
6
OFF
7
OFF
8
OFF
9
ON
10
ON
11
ON
12
ON
13
ON
14
ON
15
ON
16
ON
Switch zone
This is enabled when ZONE SWITCHING is set to EXT. INPUT
(page 57). While ON, it becomes zone. Switching is limited
to zones that have zone judgment enabled (page 53).
Clear results (reset measurement results)
Setting this to ON clears judgment results.
All judgment output is turned OFF, and continuous judg-
ment (CONTINUE) starts.
Enable/disable judgment output
Setting this to ON disables all judgment output.
Continued on the next page
3. Making connections
WORK SWITCHING
4
2
1
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
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