SIEMENS S7¶

The Siemens driver in VC Hub supports the basic connection to S7 devices. Currently, VC Hub has drivers for the following Siemens PLCs:

• S7-300
• S7-400
• S7-1200
• S7-1500

Connecting to SIEMENS Devices¶

1. On the "Devices" -> "SIEMENS S7" screen, click the "Add" button.
2. On the Add page, leave all the default values and enter the following information in the following fields (Note: The following data is only an example, please fill in according to the actual situation).
   • Device Name: Siemens 1200
   • Model: S7-1200
   • Host: Enter the IP or domain name of the device, e.g. 100.10.4.12
   • Port: 102
   • Rack: 0
   • Slot: 2
   • Frequency: 1000
3. Click on the "OK" button. The data will now be displayed in the device list page of the SIEMENS S7. The status column only indicates the start/stop status of the driver, it does not represent the real connection status with the device.
4. Click the Enable button in the Enable Status column to enable the device.

Configuration Fields

Note:

1. In the device list, The Enabled Status indicates whether the device has been enabled or not, unenabled devices will not connect and enabled devices will try to connect; the Connection Status indicates whether the device has successfully established a communication connection with the system.
2. Enable All and Disable All are to enable or disable all data in the list.
3. Shared connection of multiple devices under the same IP is not supported for the time being.
4. Per-bit writes are not supported for Bool tags; each write value overwrites the previous byte.
5. For S7-1200 and S7-1500, the following precautions and configuration changes must be made:
   • Optimized block access must be turned off.
   • The access level must be "full" and the "connection mechanism" must allow GET/PUT.
   • Only the Global DB can be accessed.
   • Reads and writes are not supported in the Timer (TM) and Counter (CT) areas.

Binding to tags¶

Bind tags to data in the Siemens PLC.

1. Creating an I/O tag.
   
2. On the add window, click the binding button for the data source.
3. In the pop-up data source window, select the created Siemens device and enter the following information in the following fields (Note: The following data is only an example, please fill in according to the actual situation).
   • Parameter Type: DB
   • DB No.: 2
   • Data Type: Int
   • Address Offset: 4
4. Click the " OK " button to complete the setup.

Configuration Fields