PLC4X MODBUS

---

Description

The Modbus adapter allows to connect to a PLC using the Modbus specification.

---

Configuration

The following configuration options are available when creating the adapter:

PLC Address

The IP address of the Modbus device without any prefix, which will be added automatically when creating the adapter.

PLC Port

The PLC port refers to the port of the PLC, such as 502.

Node ID

The Node ID refers to the ID of the specific device.

Nodes

The Nodes section requires configuration options for the individual nodes. Nodes can be either imported from a comma-separated CSV file, or can be directly assigned in the configuration menu.

The following fields must be provided for each node:

• Runtime Name: Refers to the field to internally identify the node, e.g., in the data explorer or pipeline editor.
• Node Address: Refers to the address of the Node in Modbus, e.g., 1
• Object Type: Can be selected from the available options DiscreteInput, Coil, InputRegister, or HoldingRegister.

An example CSV file looks as follows:

Runtime Name,Node Address,Object Type,
field1,1,Coil
temperature,2,Coil

Note that the CSV header must exactly match the titles Runtime Name, Node Address and Object Type.