Identifying The Analog Input Value When Trigger Input Was Turned On - Omron Sysmac NX Series User Manual

I/O refreshing of
the NX bus
Trigger input to
the High-speed
Analog Input
Unit
• If the trigger input changes from OFF to ON more than once during the NX bus I/O refresh cycle,
the High-speed Analog Input Units record the DC time at the first change.
I/O refreshing of
the NX bus
Trigger input to
the High-speed
Analog Input
Unit
8-10-3
Identifying the Analog Input Value When Trigger Input Was
Turned ON
The High-speed Analog Input Units have a library of the Sysmac Library prepared to identify and read
an analog input value at the time when trigger input was turned ON. Refer to the Sysmac Library
User's Manual for High-speed Analog Inspection Library (Cat. No. W607) for how to read values using
the library.
This section describes how to identify the analog input value when trigger Input was turned ON, with-
out using the library.
It provides a timing chart example and then the identification method to describe how to identify the
Ch1 Analog Input Value when the Ch1 trigger input was turned ON under the following conditions.
NX-series Analog I/O Units User's Manual for High-speed Analog Input Units (W592)
Sync0
Input refreshing
Output refreshing
DC time
T1
Input
value
Input
changed
T0
time
Records the DC
time when the
input value
changes from
OFF to ON.
Sync0
Input refreshing
Output refreshing
DC time
Input
value
Input
changed
T0
time
Records the DC
time of the first
trigger during the
cycle.
Sync0
Rising edge
T1
Sync0
T1
T1
8 Functions
Sync0
Sync0
8
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