Chxx.NotANumber
Channel Output Not a Number (5069-OF4, 5069-OF4K, 5069-OF8)
Allen-Bradley · Compact 5000 I/O Analog Modules
What does Chxx.NotANumber mean?
This boolean tag indicates that the last value received for the channel (xx) output data value was not a valid number. A value of 1 means the data received was non-numeric, which can lead to incorrect output signals.
Common Causes
- Invalid data format received for the channel (Chxx) output value.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify the format and type of the output data being processed by channel (Chxx) from the Logix Designer application.
- 2
Check the configuration settings for channel (Chxx) to ensure they match the expected output data type.
Verified technical data. Last updated: March 2026
Related Faults
Source: Allen-Bradley Compact 5000 I/O Analog Modules