AUTOMATION-SMI

Description: Defines the Siemens industrial automation enterprise OID root hierarchy for SNMP-managed automation system components.

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AUTOMATION-SMI is the top-level Structure-of-Management-Information (SMI) module for Siemens AG's Industry Automation Division, defining the root enterprise OID under which all of Siemens' industrial automation SNMP MIBs are organized. It does not itself define managed objects, tables, or traps; it is a registration/naming module that other Siemens automation MIBs import to anchor their own object trees. Because it carries no instrumented data, it has no direct role in reporting hardware or software status such as uptime, temperature, or CPU load — those are defined in the child MIBs branching from this root. Numerous downstream Siemens automation MIBs (e.g. for PLCs, industrial switches, and controllers) depend on this SMI module for their OID numbering. It is deployed wherever Siemens industrial automation SNMP-managed components (PLCs, HMI panels, industrial Ethernet switches) are present, serving purely as the organizational backbone of the vendor's AUTOMATION-SMI MIB tree.

This module contains no runtime data objects — it is purely an OID-tree root/registration module (the Siemens automation enterprise subtree) with no object or table definitions of its own. It exists solely so other Siemens automation MIBs can register their objects underneath a common, vendor-recognized OID branch. No monitoring scenario applies since there are no leaf objects to poll.

Siemens Industry Automation division SMI structure for PLC and industrial device management.