46
8-6. Sample hold
You can put the TD-260T into the Sample hold mode by using the HOLD key or setting the HOLD signal from the control input/
output terminal A7 to ON.
If the HOLD key is pressed, the TD-260T starts holding the displayed reading, and then if the HOLD key is pressed again, the TD-260T
exits the hold mode.
Sensor input
Reading
Time
Reading
HOLD
level response
HOLD key or
pulse response
Decision output
(Enable JUDGE Signal OFF)
A6 JUDGE
A7 HOLD
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Enable
Decision output
(Enable JUDGE Signal ON)
Enable
<
You can choose between level response and pulse response for the HOLD signal from the control input/output terminal A7 by
changing the setting for External Hold Mode (F2-7).
<
The operations of decision outputs vary depending on the setting for Comparison Mode (F1-7). The mode 4.HLd is selected in
the above example.
<
The operations of decision outputs vary depending on the setting for Enable JUDGE Signal (F3-8).
With the setting OFF selected, a decision output can always be generated, depending on the input signal.
With the setting ON selected, a decision output can be generated, depending on the input signal, only while the JUDGE signal
from the A6 is ON, so that you can avoid unnecessary switching of decision output relays.
<
Block setting is unavailable for the Sample hold mode.
<
You cannot use either the CLEAR key or the CLEAR signal from the control input/output terminal A5 while the TD-260T is
operating in the Sample hold mode.
8. Hold function
