YOKOGAWA CW120 - External Control Input;Output

9-18
IM CW120-E
9.6 External Control Input/Output
9.6.1 Remote Control
Integration (continuous measurement) can be started and stopped remotely.
The external control input must be a 0/5 V (Low/High) level voltage signal or
an open/close (short-circuit) contact. The external control output is a 0/5 V
(Low/High) level voltage signal. Only the models with the RS-232 interface
have external control input/output terminals.
Input
While the external control input signal is at the low level or is closed,
integration (continuous measurement) is performed. While the external
control input signal is at the high level or is open, instantaneous value
measurement is performed.
Output
While integration (continuous measurement) is performed, the output is at the
low level. While instantaneous value measurement is performed, the output
is at the high level.
The
mark is displayed when integration is controlled by the external
control signal.
Min. 30 sec
Start
H
L
100 Ω
Start Stop
Stop
5 V (open)
0 V (closed)
Integration in progress
(continuous measurement)
H
L
100 Ω
4.7 kΩ
100 pF
+5 V
• Input Circuit • Terminal Arrangement
• Output Circuit • Example of Input Signal Changes