Omron NX-ID3343 User Manual page 126

5 I/O Refreshing
I/O refreshing synchronization
The longest AD conversion time
is within one cycle.
Offset between
Sync0 and timing to
read inputs
This time is automatically
calculated by the Sysmac
Studio.
I/O refreshing
of the NX bus
Digital Input
Unit A
Digital Input
Unit B
Analog Input
1 2 3 4
Unit A
Analog Input
Input 1 Input 2
Unit B
5 - 10
(b) The Communications Coupler Unit
reads the latched data at I/O refreshing.
Sync0
Input refreshing
Output refreshing
Constant
ON/OFF response
time
Input filter time
ON/OFF response
time
Input filter time
1 2 3 4
AD conversion
time for all Units.
Input 1
AD conversion
time for all Units.
AD conversion starts
(a) All input-synchronized
Units read their inputs
simultaneously.
(c) Interval of I/O refreshing
is not constant.
Sync0
Constant
Constant
(e) Set inputs
Input 1
Input 2
(e)
NX-series Digital I/O Unit User's Manual (W521)
(d) Interval of Sync0 is constant.
Not constant.
Sync0
Constant
(d) Constant
1 2 3 4
Input 2
(e)