Siemens SIMOCODE pro Function Manual page 88

Communication
2.2 PROFINET communication
Connection monitoring
The OPC UA connection is monitored over time. The monitoring time is set by the OPC UA
client and is in the range of 10 s to 100 s. If the OPC UA connection is terminated, the
OPC UA control variables set by this OPC client will be deleted in SIMOCODE pro only after
this time has expired. In SIMOCODE pro, no fault is triggered.
If failure of the OPC UA connection of SIMOCODE pro is to be monitored, this can be done
as follows:
The drive cannot be controlled.
Can result in death, serious injury, or property damage.
If the connection is interrupted, the drive cannot be controlled while the OPC-UA
connection monitoring time is active.
Take suitable safety measures to avoid personal injury or property damage.
Example:
Makes sure that Bit 0.7 is set statically at the client end. If the connection is interrupted, this
will activate the "PLC/PCS" fault in "remote" mode (mode selector S1=1, S2=1).
Figure 2-26 Example of connection monitoring
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WARNING
SIMOCODE pro - Communication
Function Manual, 11/2018, A5E40508495002A/RS-AC/003