Scanner not available for 1771 rack adapter
Allen-Bradley · Logix 5000
What does F016 mean?
The scanner is not available to communicate with a 1771 rack adapter. This disrupts I/O communication with the specified rack.
Common Causes
- The scanner is not available to communicate with a 1771 rack adapter
Repair Steps & Checklist
Click steps to track your progress.
- 1
Measure supply voltage at the 1771 rack adapter's power input terminals against specified nominal voltage.
- 2
Inspect the RIO (Remote I/O) cable connecting the Logix 5000 system to the 1771 rack adapter for damage and secure connections at both ends.
- 3
Verify the RIO configuration parameters within the Logix 5000 program (e.g., rack number, baud rate, module type) match the physical 1771 rack adapter settings (e.g., DIP switches).
- 4
Observe the status indicator LEDs on the 1771 rack adapter for any fault or communication errors, referring to the adapter's manual for interpretation.
- 5
Inspect the 1771 rack adapter for proper seating in its slot within the 1771 chassis, ensuring all backplane connectors are fully engaged.