(a) The High-speed Analog Input Unit reads the input changed times.
Offset between Sync0
and the timing to read
inputs
This period of time is
automatically
calculated by the
Sysmac Studio.
ON response time
+ Time set in the Input Filter
Setting
T1
T2
T1
T2
T0
T1
T2
T0
(b) The Communications Coupler
Unit reads the input changed
time that is read by the Unit
and the input value at this
point of time at I/O refreshing.
Trigger input
to the
High-speed
Analog Input
Unit
Records T1,
which is the DC
time when the
input value
changes.
I/O refreshing of
the NX bus
Communicat
ion Coupler
Unit
Input refreshing
Output refreshing
DC time
Constant
Constant
Input
value
Input
changed
time
I/O refresh cycle
The longest AD conversion
time is within one cycle.
(c) Interval of I/O refreshing is not
constant
Constant
(d) Interval of Sync0 is
constant.
Not constant
Constant
Input
terminal
Input
value
Input
changed
time
(e) Constant
Sync0
Sync0
Sync0
• The High-speed Analog Input Units detect changes at the rising edge of the trigger input.
8 Functions
8 - 44
NX-series Analog I/O Units User’s Manual for High-speed Analog Input Units (W592)
