Regularly verify that the S7ONLINE Access Point is correctly mapped to your hardware adapter.
In older systems, "corruption" is a common failure mode. drive es basic maintenance v5.7
: For modern drive families like SINAMICS or MICROMASTER 4, the STARTER commissioning tool is the current standard and includes many Drive ES features for free. Regularly verify that the S7ONLINE Access Point is
Delivery release for Drive ES Basic Maintenance V5.7 - SiePortal drive es basic maintenance v5.7
Release notes attached.