Siemens SICAM Q100 7KG95 Series Manual page 227

date and time when the certificates are uploaded. If no certificate exists in the device, no connection to the
broker can be established.
Figure 9-65
NOTE
The Q100 device cannot connect to the OPC UA PubSub (MQTT) broker in any of the following cases:
• The date and time of the device are not synchronized.
• The security certificates and time stamps have expired.
Therefore, you must check the date and time of the device to ensure that they are synchronized, for example,
by selecting Information -> Show device information.
SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A6, Edition 06.2019
Information above Upload Certificates
9 Operation at Use of a PC
9.3 Configuration of the Device
227