Problem
Assumed cause
Correction
The external device connected to the trig-
ger input terminal is ON and the IN indica-
tor is lit, but nothing is input.
An NX bus error or a com-
munications error occur-
red.
When the Unit is connected to the
CPU Unit, check if a NX bus error
occurred.
In the case of a Slave Terminal,
check if a NX bus or host communi-
cation error occurred.
The channel is selected to
use, but disabled.
Set the selecting channel to use
function to Enable.
There is a delay in the ON and OFF timing
of the trigger input.
An input filter may be set.
Set the input filter value to
0
. Alterna-
tively, change the input filter to an
appropriate value.
9 Troubleshooting
9 - 38
NX-series Analog I/O Units User’s Manual for High-speed Analog Input Units (W592)
