Opc Ua; Opc Ua Server - Siemens SIMATIC CC712 Operating Instructions Manual

Configuration

4.8 OPC UA

● Retries
Maximum number of retries of the station query when the gateway does not receive any
or a faulty response from the station.
Range of values: 0...10
● Endianness
You use this option to specify the order in which the data of the station read word by word
is saved.
– Big Endian
– Little Endian
Numbering of the two bytes of a word: | 1 | 0 |
4.8 OPC UA
4.8.1

OPC UA server

Requirements
CPU tags
The process data that the gateway makes available to the OPC UA services, originate in the
connected S7-CPU. You will find the permitted memory areas of the CPU and the supported
data types in the section Data points (Page 78).
A data point that is configured for OPC UA cannot be configured for transfer to a cloud
broker.
The data point names assigned during data point configuration are included in the NodeID of
an item as part of the identifier, see section Properties of the OPC UA server (Page 58).
Note:
Where possible read tags in in data blocks block by block per DB to achieve a higher speed.
Security settings of connected clients
If you use the gateway as an OPC UA server and the communication partners (UA clients)
you are using demand a certificate, you must create or import a self-signed server certificate.
52
The higher byte 1 is saved first. (Modbus standard)
The lower byte 0 is saved first.
Operating Instructions, 05/2019, C79000-G8976-C503-01
SIMATIC CC712