Community

Hello,

We are experiencing an issue where the S7 driver hangs and delays(10sec) communicating during runtime.

When checking the system status, the driver becomes stuck and remains in the "Transaction Active" state indefinitely, failing to recover or process further read/write requests.

- **Symptoms:** Communication freezes, data updates stop, and the driver stays locked in "Transaction Active".
- **Troubleshooting attempted:** Restarting the driver manager temporarily restores service, but the issue eventually recurs.


Additionally, communication with all other devices is operating normally. The issue only occurs when accessing addresses on one specific target device. Read/write operations to that target may cause the driver to become stuck in the **"Transaction Active"** state, after which communication freezes and no further requests are processed.

Could you please advise on what might cause this transaction lockup and how to prevent it? Are there specific configuration parameters (such as timeouts or poll group settings) or known driver patches we should apply?

Thank you for your support.