PLC4X S7

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Description

The adapter allows to connect with a Siemens S7 PLC.

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Configuration

The following configuration options are available when creating an adapter:

PLC Address

This field requires the PLC address in form of the IP without the prefixed protocol (e.g., 192.168.34.56).

In addition to the pure IP, other parameters supported by Apache PLC4X can be provided as an URL parameter:

• local-rack
• local-slot
• local-tsap
• remote-rack
• remote-slot

Additional configs are separated by &.

Example address: 192.68.34.56?remote-rack=0&remote-slot=3&controller-type=S7_400

See the Apache PLC4X documentation for more information.

Polling Interval

The polling interval requires a number in milliseconds, which represents the interval in which the adapter will poll the PLC for new data. For instance, a polling interval of 1000 milliseconds will configure the adapter to send a request to the PLC every second.

Nodes

In the Nodes section, the PLC nodes that should be gathered are defined. There are two options to define the nodes:

• Manual configuration: The address must be assigned manually by providing a runtime name, the node name and the datatype. The Runtime Name will be the StreamPipes-internal name of the field, which will also show up in the data explorer and pipeline editor. The Node Name refers to the node address of the PLC, e.g., %Q0.4. Finally, the data type can be selected from the available selection. Currently available data types are Bool, Byte, Int, Word, Real, Char, String, Date, Time of Day and Date and Time.
• Instead of providing the node information manually, a CSV file can be uploaded. The CSV file can, for instance, be exported from TIA and then be enriched with the appropriate runtime names. This is especially useful when many fields should be added as nodes. Here is an example export enriched with the runtime name:

Runtime Name,Path,Data Type,Node Name
I_High_sensor,Tag table_1,Bool,%I0.0,
I_Low_sensor,Tag table_1,Bool,%I0.1,
I_Pallet_sensor,Tag table_1,Bool,%I0.2,
I_Loaded,Tag table_1,Bool,%I0.3,

Note that the CSV can contain additional columns, but only the columns Runtime Name, Data Type and Node Name are used, while all other columns will be ignored.

Best Practices

Instead of creating a large event containing all nodes that should be available in StreamPipes, consider to group the fields logically into smaller adapters. This will ease the definition of pipelines for users and eases future modifications.