Engineering and remote access
3.8 OPC UA server
SITOP UPS1600 / UPS1100
Manual, 04.2017, A5E37775406-8-76
181
SerialNumber String PropertyType ID, which uniquely identifies the device for the device manu-
SoftwareRevision String PropertyType Revision status of the device software.
OPC UA provides the option of collectively transferring modified actual values in the form of
a subscription. The minimum pole interval of such a subscription is 100 ms. A maximum of
150 data nodes can be simultaneously monitored, independent of whether these data nodes
are assigned one or various subscriptions.
OPC UA does not support any type of realtime communication, neither for actual values
(read data) nor for setpoints (written data). As a consequence, it is not possible to specify an
update/refresh rate or a maximum data flow rate.
Recommissioning after a basic device has been replaced - or after restoring the
factory settings
If, for service reasons it is necessary to replace the basic device - or store the factory
settings, then please observe the following notes:
1. Brand new basic devices or basic devices, where the factory settings have been restored,
have no IP address. However, this is generally necessary so that the device can be
accessed using OPC UA. Proceed as described in Chapter General (Page 146), Section
"communication interface" to assign the device a certain IP address.
2. The configuration must be loaded to the device. This can be done in the following ways:
● Proceed as described in Chapter Load / Save (Page 157) to load a valid configuration
into the device (previously saved via web server).
● Load a valid configuration to the device via OPC UA. Ensure that the necessary user
account is available in the device for access via OPC UA. The latter can be created using
a web server, see Chapter Web server (Page 148).
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