S7TCP32: Service Engine reload causes the INVALID communication under specific circumstances

S7TCP32: Service Engine reload causes the INVALID communication under specific circumstances

Summary

The S7TCP32 driver incorrectly indicates INVALID bits. This has been fixed.

Description

Variables for the S7TCP32 driver may show INVALID bits for interrupted communication after reloading the Service Engine. However, the reconnection works as expected and the number of connections to the PLC is not too high. This behavior is not desired when reloading. INVALID bits must not be set if the driver interrupts the connection during reloading. This may only happen if the subsequent reconnection fails.

This behavior has been modified. The S7TCP32 driver no longer sends an INVALID bit if the connection is first disconnected and then successfully re-established during reload.

To benefit from this fix:

  • Update your zenon Software Platform to the latest build of zenon 12 or higher.


Item ID: 273193
Version: 12.00 Build: 206562