8-1
Function Block Diagram
This section describes the processing order of analog input signals on the High-speed Analog Input
Units.
Analog input signals are processed in the following order according to the input range and the number
of samplings that you set in the Unit operation settings.
Analog input signal
Analog input value
Channel
Enable/Disable setting
Input disconnection detection
(only at 1 to 5 V
or 4 to 20 mA)
Over range/
under range detection
AD conversion
Enable
Disable
User calibration
Digital filtering
Detection is enabled
and working.
Detecting
Not detecting
Detection is disabled, or detection
is enabled but not working.
No processing
Unit I/O Disconnection Detected for
Channel
£
event
Unit Over Range for Channel
£
event
Or Unit Under Range for Channel
£
event
Fixing to
limit value
Zero set/zero reset processing
Fixing to
limit value
8 Functions
8 - 3
NX-series Analog I/O Units User’s Manual for High-speed Analog Input Units (W592)
8-1 Function Block Diagram
8
