Omron Sysmac NX Series User Manual page 186

8 Functions
I/O refresh cycle
The longest AD conversion
time is within one cycle.
I/O refreshing of
the NX bus
Communicat
ion Coupler
Unit
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
Input
terminal
Trigger input
to the
High-speed
Input
Analog Input
value
Unit
Input
changed
time
• The High-speed Analog Input Units detect changes at the rising edge of the trigger input.
8 - 44
(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.
Sync0
Input refreshing
Output refreshing
T1
DC time
Input
value
Input
changed
time
Constant
T0
Records T1,
which is the DC
time when the
input value
changes.
(a) The High-speed Analog Input Unit reads the input changed times.
NX-series Analog I/O Units User's Manual for High-speed Analog Input Units (W592)
(c) Interval of I/O refreshing is not
Sync0
Constant
T0 T1
Constant
T1
constant
(d) Interval of Sync0 is
constant.
Not constant
Sync0
Constant
T2
T2
(e) Constant
T2