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For each hardware that is to be accessed (ie with which to communicate), at least one connection must be created in the device. The connection defines the access path to the hardware, e.g. the channel between the two communication subscribers.
The dialog offers the following input possibilities:
Name of the connection
The connection name is freely selectable. Only letters and numbers should be used. The connection name used here can be selected in the further dialogs.
Connection type
The type of connection is selected here. The selection is multi-level. If an image or a text button is selected, a wider selection opens under it. If something is selected there, another selection can open under it.
Active data request
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With this type of connection, active requests are made to the other communication subscribers, which then respond with the corresponding data, so-called client connections.
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PLC access
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Connection to the different PLC types and raw data. These types of connections allow for the use of redundancy.
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OpcPipe Client
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A connection to a device or PC via the OpcPipe protocol, which communicates via a simple TCP / IP port connection.
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OPC UA Client
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A connection to a device or PC with an OPC UA server. A current protocol, standardized and specified by the OPC Foundation
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MQTT Client
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Connection to an MQTT broker (or MQTT server) used in IoT (Internet of Things).
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Data Server
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This type of connection provides variables with values that can be fetched via active connections, so-called server connections.
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OPC UA Server
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OPC UA connection that can read data from all connections where OPC access is allowed.
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OpcPipe Server
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OpcPipe connection that can read data from all connections where OPC access is allowed.
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MQTT Broker (Server)
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MQTT connection that provides variables that are created and written with an MQTT client.
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Database Access
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This type of connection connects to known databases. The PLC Engine Collect is used to read or write the records from the database via tables.
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MySql
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Connection to a MySql database.
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MsSql
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Connection to a MsSql database.
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Enable Redundancy
defines this connection for using network redundancy.
Available are Static Master or Dynamic Master.
The static master tries using the first connection it ever possible.
The dynamic master remains in the new connection after failure of the previous connection.
Redundancy can be double or triple.
See also Redundancy.
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