List Of Functions; Digital Input Units - Omron NX-ID3343 User Manual

1 Features and System Configuration
1-4

List of Functions

This section provides an overview of functions that the Digital I/O Units have.
Refer to the specifications of each model in A-1 Data Sheet on page A-2 for details on the functions.
1-4-1

Digital Input Units

Function name
Free-Run Refreshing
Synchronous I/O Refresh-
ing
Time Stamp Refreshing
Input refreshing
with input changed
time
Input Filter
1 - 14
Description
With this I/O refreshing method, the refresh cycle of the NX
bus and the I/O refresh cycles of the NX Units are asynchro-
nous.
With this I/O refreshing method, the timing to read inputs or to
refresh outputs is synchronous on a fixed interval between
more than one NX Unit on more than one Slave Terminal.
With this I/O refreshing method, the NX Units record the DC
times when inputs change or perform outputs at specified DC
times. These times are asynchronous to the NX bus refresh
cycles.
Data exchange between the NX Units and EtherCAT Coupler
Unit are performed cyclically on the NX bus refresh cycles.
With this I/O refreshing method, the Input Units record the DC
times when inputs changed.
This function eliminates the chattering or the noises from input
signals.
It is used to prevent the error reading due to the noises. You
can set the filter time constant.
5-2-4 Free-Run
Refreshing on
page 5-5
5-2-5 Synchro-
nous Input
Refreshing on
page 5-9
5-2-7 Time Stamp
Refreshing on
page 5-18
5-2-8 Input
Refreshing with
Input Changed
Time on page 5-19
6-4-2 Input Filter
on page 6-14
NX-series Digital I/O Unit User's Manual (W521)
Reference