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Profinet IO

PROFINET is an open industrial Ethernet communication protocol proposed by the PROFIBUS & PROFINET International Association. PROFINET applies TCP/IP related standards and is a real-time industrial Ethernet. PROFINET has a modular structure, and users can choose cascading skills according to their needs.

The PROFINET IO system includes several parts: IO controller, IO device, and IO monitor. The IO controller is used to control the automation task; the IO device is generally a field device, controlled and monitored by the IO controller, and an IO device may include several modules and sub-modules; the IO monitor is a PC software that can set parameters and diagnose the status of individual modules.


Because the PROFINET IO real-time message uses the Ethernet protocol defined in PROFINET (real-time message is transmitted based on Ethernet frames), when using the PROFINET driver, you need to deploy Neuron directly with physical devices, and cannot use virtual deployment, such as Docker image or virtual machine.

Add Device

Go to Configuration -> South Devices, then click Add Device to add the driver. Configure the following settings in the popup dialog box.

  • Name: The name of this device node.
  • Plugin: Select the Profinet IO plugin.

Device Configuration

After clicking Create, you will be redirected to the Device Configuration page, where we will set up the parameters required for Neuron to establish a connection with the northbound application. You can also click the device configuration icon on the southbound device card to enter the Device Configuration interface.

Device NameIO device name
Local InterfaceLocal interface name
Device IP AddressIO device IPv4 address
Device PortIO device port, default 34964
APIIO device module API
SlotIO device module slot
Sub SlotIO device module sub slot
IdentIO device module ident
Sub IdentIO device sub ident
PropertiesIO device properties
Input Data LengthIO device module input data length
Output Data LengthIO device module output data length

Configure Data Groups and Tags

After the plug-in is added and configured, the next step is to establish communication between your device and Neuron by adding groups and tags to the Southbound driver.

Once device configuration is completed, navigate to the South Devices page. Click on the device card or device row to access the Group List page. Here, you can create a new group by clicking on Create, then specifying the group name and data collection interval.

Upon successfully creating a group, click on its name to proceed to the Tag List page. This page allows you to add device tags for data collection. You'll need to provide information such as the tag address, attributes, and data type.

For information on general configuration items, see Connect to Southbound Devices. The subsequent section will concentrate on configurations specific to the driver.

Data Types

  • INT8
  • UINT8
  • INT16
  • UINT16
  • INT32
  • UINT32
  • INT64
  • UINT64
  • BIT

Address Format



Required, the slot number of the module inserted into the module.


Required, the sub-slot number of the module inserted into the module.


Required, the data index in the module (which byte, starting from 0).

Example Addresses

AddressData TypeDescription
3:1:0int16slot 3, subslot 1, module 0, 1 bytes
3:1:1uint16slot 3, subslot 1, module 1, 2 bytes
3:2:3uint32slot 3, subslot 2, module 3, 4, 5, 6 bytes
3:2:10floatslot 3, subslot 2, module 10, 11, 12, 13 bytes
3:2:2uint64slot 3, subslot 2, module 2, 3, 4, 5, 6, 7, 8, 9 bytes
3:2:2doubleslot 3, subslot 2, module 2, 3, 4, 5, 6, 7, 8, 9 bytes

Data Monitoring

After completing the point configuration, you can click Monitoring -> Data Monitoring to view device information and control devices. For details, refer to Data Monitoring.