Profinet (Siemens)
Profinet (Siemens)
The Profinet driver is designed to communicate with Siemens PLCs over Ethernet (TCP/IP).
Note: For S7-1200 series, “PUT/GET” access must be enabled in TIA Portal. Click for Access Permissions
Connection Settings
When you select the protocol name in the tree view (e.g., [1] Network), these settings define the physical parameters of the connection.
| Parameter | Description | Example |
| Ethernet Adapter | Selects which network adapter on your computer will be used. If All is selected, Windows’ default routing is applied. | All |
| IP Address | The IP address of the Siemens PLC to connect to. | 192.168.0.10 |
| Port | Siemens S7 communication port. The standard value is 102. | 102 |
| Delay (ms) | Minimum waiting time between two data requests. Used to balance network traffic. | 100 |
| Timeout (ms) | Maximum waiting time for the PLC to respond after a request is sent. If exceeded, a Timeout error occurs. | 250 |
| Retry Count | Number of retry attempts before entering the Fault state when communication errors occur. | 3 |
Device Settings
In Siemens PLCs, the Ethernet interface and CPU may be on the same module or in different slots. This panel defines the location of the target CPU.
| Parameter | Description |
| CPU Slot | CPU Slot Number: The slot number on the PLC rack where the CPU is installed. |
| Symbol | Symbolic name assigned to the device (e.g., Device). |
| Enable | Determines whether the device is active. You can define conditions to dynamically enable or disable communication. Multiple conditions can be added; if any of them is true, the device becomes active. Leave blank to keep the device always active. |
| Connected | The selected bit becomes True when a connection with the device is successfully established. |
| Fault | The selected bit becomes True when a communication error occurs. |
| Comment | Descriptive note for the device. |
Addressing Table
Wise SCADA uses the following formats tailored to Siemens memory structure.
| Area | Data Type | Format | Description |
| M | Bit | M 0.0 – M 8191.7 | Merker (Memory) Bit |
| I | Bit | I 0.0 – I … | Input |
| Q | Bit | Q 0.0 – Q … | Output |
| MB | Byte | MB 0 – MB 8191 | Memory Byte |
| IW | Word | IW 0 – IW 8190 | Input Word |
| QD | DWord | QD 0 – QD 8188 | Output DWord |
| ML | Long | ML 0 – ML 8184 | Memory Long |
Data Block (DB) Addressing
Data Block addressing begins with the DB prefix.
(The examples below use DB1 as the block number.)
- Bit: DB1.DBX0.0 (DB1, Byte 0, Bit 0)
- Byte: DB1.DBB10 (DB1, Byte 10)
- Word: DB1.DBW20 (DB1, Word 20)
- DWord (Real/DInt): DB1.DBD40 (DB1, DWord 40)