1 Data List
1 - 8
NX-series Data Reference Manual (W525)
1-4 Digital I/O Units
This section describes the data for Digital I/O Units.
Items in the Summary Specifications
1-4-1 Digital Input Units
DC Input Units (Screwless Clamping Terminal Block, 12 mm Width)
Item Description
Number of points The number of input points provided by the Unit.
Internal I/O common This is the polarity that the Unit uses to connect to input devices.
There are models with NPN and PNP connections.
Rated input voltage The rated input voltage of the Unit.
I/O refreshing method The I/O refreshing methods that are used by the Unit.
Free-Run refreshing, synchronous I/O refreshing and input refreshing with input changed time are
available.
In the following table, the following abbreviations are used.
Free
:
Free-Run refreshing
Sync
: Switching
synchronous I/O refreshing
and
Free-Run refreshing
Changed time: Input refreshing with input changed time
ON/OFF response
time
The delay time for which the status change of the input terminals reaches the internal circuit of the
Unit.
The input filter time is not included.
It is described according to the ON/OFF sequence.
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