Cloud Gateway; Description - Siemens SIMATIC NET System Manual

Cloud Gateway

5.1

Description

Figure 5-1
The Cloud Gateway is used for the connection and data transmission of a SIMATIC S7 or
Modbus process station to a cloud system or of a SIMATIC S7 process station to an OPC
UA client.
There are two options for the transmission of process data:
● Connection of a S7 or a Modbus process station to a cloud broker:
The gateway is the publisher. It reads the data from the process station, establishes the
communication with a cloud broker via the MQTT protocol and transfer the data. The
gateway supports the connection to cloud systems that have a broker functionality, for
example, MindSphere, Microsoft Azure, IBM Cloud or Amazon AWS.
The SIMATIC CC712 device enables the communication of a SIMATIC S7-300 / S7-400 /
S7-1200 or S7-1500 controller via Industrial Ethernet with the S7 protocol. The SIMATIC
CC716 device is intended for the connection of up to seven SIMATIC S7 controllers via
Industrial Ethernet or a PROFIBUS/MPI interface.
● Connection of a S7 process station to OPC UA clients:
The gateway takes on the function of an OPC UA Server. It reads process data from the
S7 CPU and, as an OPC UA Server, makes it available to one or more OPC UA Clients.
In this case, the gateway supports the following server functions:
– Reading and writing variables
– Monitoring variables using subscriptions
– Hierarchical address browsing
Industrial Ethernet
System Manual, 09/2019, C79000-G8976-C242-10
CloudConnect 7 SIMATIC CC712 and SIMATIC CC716
5
287