Hirschmann MACH 100 User Manual page 20

EtherNet/IP
Note: If for example, a management program is occupying the Switch
CPU with SNMP requests, the I/O connection between the programmable
logic controller (PLC) and the Switch can be interrupted for a time. As the
Switch can still transmit data packages in this case, the system can also
still be ready for operation.
The monitoring of the I/O connection to the Switch CPU as a failure
criterion can result in system failure and is therefore less suitable as a
failure criterion.
Example of integration from the Sample Code Library

The Sample Code Library is a website from Rockwell. The object of the
website is to provide users with a place where they can exchange their
best architecture integration applications.
On the website http://samplecode.rockwellautomation.com, search for
catalog number 9701. This is the catalog number of an example for
integrating HirschmannSwitches into RS Logix 5000 rel. 16, PLC
firmware release 16.
20
2.1 Integration into a Control System
UM IndustProtocol
Release 9.0 02/2015