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6 Analog Input Units
NX-series Analog I/O Units User’s Manual for Analog Input Units and Analog Output Units (W522)
6-
5 Fu
nct
ion
6
6-
5-4 Inpu
t Disconnection
Detection
This function detects disconnections of the analog input signal lines.
However, it is only available when the input range is 4 to 20 mA.
• If any analog input signal line (current inputs) of the inputs that are enabled by the selecting channel
to use function is disconnected, or the input current is less than 1.2 mA, the converted value is
32767. At this time, the Disconnection Detection Status turns ON and a Unit I/O Disconnection
Detected for Channel
□
event (event code: 65030000 hex to 65A00000 hex) occurs.
• If the input returns to the conversion range again, the value becomes the normal converted value.
When the cause of the error is removed and the error is reset, the Disconnection Detection Status
turns OFF.
• Refer to
on page A-39 for details on status and
on page 8-7 for details on events.
Analog Input Units with the input range of 4 to 20 mA
No setting is required.
6-5-4
Input Disconnection Detection
Purpose
Details on the Function
Target NX Units
Setting Method
Summary of Contents for NX-AD series
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