8   Troubleshooting
8 - 4
NX-series Analog I/O Units User’s Manual for Analog Input Units and Analog Output Units (W522)
Not Lit Lit Control Parameter Error in Mas-
ter
Refer to Event Control Parameter Error in Mas-
ter on page 8-16.
Not Lit Lit Unit Calibration Value Parity Error Refer to Event Unit Calibration Value Parity 
Error on page 8-17.
Not Lit Lit NX Unit Clock Not Synchronized 
Error
Refer to Event NX Unit Clock Not Synchronized 
Error on page 8-25.
Not Lit FS (1 s) NX Unit I/O Communications 
Error
Refer to Event NX Unit I/O Communications 
Error on page 8-22.
Not Lit FS (1 s) NX Unit Output Synchronization 
Error
Refer to Event NX Unit Output Synchronization 
Error on page 8-24.
The indicator status is 
held immediately before 
the event occurred.
Unit I/O Disconnection Detected 
for Channel 
Refer to Event Unit I/O Disconnection Detected 
for Channel 1 on page 8-17.
Unit Over Range for Channel 
Refer to Event Unit Over Range for Channel 1 
on page 8-26.
Unit Under Range for Channel 
Refer to Event Unit Under Range for Channel 1 
on page 8-30.
TS indicator
Cause Correction
Green Red