6
PARALLEL INTERFACE
Timing Charts
ZFX-C User’s Manual
167
Timing Charts
Measurement (Handshaking OFF)
When handshaking is set to OFF, the ZFX-C outputs measurement results to the external device without
synchronizing communications. Monitor the ZFX-C’s GATE signal from the external device and read the
measurement results at the external device while the ZFX-C’s GATE signal is ON.
Trigger Measurement
T1:
Trigger input time
Set to ON for at least 0.5 ms.
T2:
Measurement time
This time is "image input" + "measurement". This time can be changed to only "image
input" or "image input" + "measurement" + "display".
T3:
Gate ON delay
This is the time to wait until stable output data can be obtained. This time can be
changed.
T4:
Gate ON time
This is the time required for the external device to capture output data from the Controller.
This time can be changed.
T5:
Output cycle
This is the interval in which the DO signal state changes. This time can be changed.
T6:
Total output time
This time is equivalent to "output cycle (T5) x number of output data items". Input the trig-
ger at an interval longer than this time. When the total output time is longer than T2, non-
output data accumulates in the Controller as the next measurement is executed before
measurement results are output. When the Controller becomes filled up with this non-out-
put data, data can no longer accumulate in the Controller. When this happens, output of
non-output data continues, and the next measurement is no longer possible until queued
data has finished accumulating.
ENABLE
TRIG
RUN
OR
DO
GATE
(1)
T2
T2
T3
(3)
T4
T5
T6
Overall judgment
Data 0
Data 1
Data 31
Data 0
Judgment
0 to 15
Judgment
16 to 31
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
(4)
(5)
T1
T1
(2)
(6)
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