PCN v2.2.1 Released: Bug Fixes and Stability Improvements for the iO Platform
Introduction
We are pleased to announce the release of Product Change Notice (PCN) v2.2.1 for the iO Platform. This version focuses on bug corrections, system reliability, and stability enhancements, ensuring improved consistency across industrial and enterprise deployments.
PCN v2.2.1 is dedicated to strengthening the platform’s core performance and addressing key issues reported in real‑world usage.
Key Fix: SNMP OID Structure Correction
One of the most important updates in this release is the correction of the SNMP OID structure (EV‑4979).
Previously, a mismatch existed between the OID definition and the OID transmitted by iO devices due to a missing suffix. This issue could impact how certain trap receiver systems interpret SNMP traps. The correction ensures proper alignment with the iO MIB and improves interoperability with third‑party monitoring tools.
Improved Stability for Long‑Running Systems
PCN v2.2.1 introduces key fixes aimed at improving stability during extended operations:
- EV‑4640: Resolution of an out‑of‑range exception triggered during long sampling durations, enhancing reliability for continuous data collection
- EV‑4666: Improved SMX behavior in the event of critical errors, strengthening system robustness and fault handling
These updates ensure more stable operation in environments where systems run continuously over long periods.
Configuration and Data Handling Improvements
Issues related to configuration and data management have been resolved:
- EV‑4779: Improved compatibility when importing configuration files containing labeled binary points
- Fixes to Modbus data point configuration, including offset saving and parameter editing
- Improved handling of statistics and data consistency
These improvements enhance the reliability of system configuration and reduce the risk of inconsistencies during deployment.
User Interface and Functional Corrections
The release also addresses some UI and functional issues impacting usability:
- EV‑4886: Fix for I/O channel display issues where disabling a channel caused the interface to disappear
- EV‑4815: Correction of user access behavior where disabled users retained active sessions
- Improvements to asset display logic and script template management
These fixes contribute to a more predictable and user‑friendly system experience.
Known Issues
Some issues identified in this version remain under investigation and will be addressed in future updates, including:
- Notification escalation status inconsistencies (EV‑4957)
- Temporary interface warnings in connection pages (EV‑4906)
- Data display inconsistencies with negative values (EV‑4954, EV‑4959)
We are actively working to resolve these in upcoming releases.
Conclusion
PCN v2.2.1 reinforces the stability and reliability of the iO Platform, addressing critical issues and enhancing system robustness without introducing breaking functional changes.
With improvements to SNMP interoperability, long‑term performance, configuration handling, and user experience, this release ensures a more consistent and dependable platform for industrial and enterprise environments.
Access the full PCN v2.2.1 document here to review all updates and assess their impact on your deployment.
