ERR_PACKET_RELEASE
Firmware use only
Allen-Bradley · MicroLogix 1400 Programmable Controllers
What does ERR_PACKET_RELEASE mean?
This error is for firmware internal use only, indicating a failure to release a packet. This suggests an internal memory management issue where packet buffers are not being properly deallocated, potentially leading to memory leaks or resource exhaustion.
Common Causes
- Memory leak within the Modbus TCP firmware module.
- Corrupted memory pointers preventing proper deallocation of packet buffers.
- Internal operating system error related to memory management.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Restart the controller to clear internal memory states and force release of packet resources.
- 2
Consider updating controller firmware if the issue persists, as it may indicate a known bug.
Verified technical data. Last updated: March 2026
Related Faults
Source: Allen-Bradley MicroLogix 1400 Programmable Controllers