SIMATIC S7 MPI Direct
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Settings of External Device

Use the ladder software "SIMATIC Manager" to perform the communication settings for the S7-300/400 Series.

Set as below, following the steps.

Setup Items

Setup Description

Speed

187500 bps

Destination Node No.

2

Source Node No.

1 (Option: Set the smaller value than Max Value of Node No.)

Max Value of Node No.

31


  1. Click the icon of [New Project].

  2. Put the optional name and click [OK].

  3. From the menu bar, select [Insert], [Station], [1 SIMATIC 400 Station] in this order.

    NOTE

    • When using the S7-300 Series, select [2 SIMATIC 300 Station].

  4. "SIMATIC 400(1)" is created in the project. Double-click [Hardware] in the CPU.

  5. The "HW Config" screen is displayed. From the left tree, open [RACK- 400] from [SIMATIC 400], and select the base unit of the using model, then drag & drop to the upper right window.

  6. Drag & drop the using power unit in the preset rack.

  7. Similarly, drag & drop the using CPU unit.

  8. Double-click the preset CPU unit "CPU xxx-xxx".

  9. The dialog box for the MPI port setting is displayed. Open [Properties].

  10. Check that "MPI(1)...187.5Kbps" is set as default. In addition, set [Address] which will be the destination node number (PLC Address) you set in BLUE (the default value "2" is used this time). Select "MPI(1)...187.5Kbps" and open [Properties].

  11. Click the [Network Settings] tab.

  12. You can change the transmission rate and the highest MPI address of the node No. in the dialog displayed (select [187.5Kbps] for the transmission rate). When you change the highest MPI address of the node No. (set to [31] this time), check the [Change] box to allow you to select the item. When you finish setting, click [OK].

  13. Click [OK] in the dialog box displayed in step 12.

  14. Click [OK] in the MPI port setting dialog box displayed in step 9.

  15. Check the connection between the External Device and the ladder software. Open [Set PG/PC Interface] from [Options] in the menu bar.

  16. The [Set PG/PC Interface] dialog box is displayed. Click [Properties].

  17. Set [Transmission] to [187.5Kbps], and [Highest Node Address] to [31]. Click [OK].

  18. Next click [Diagnostics].

  19. Click [Test] and [Read].

  20. If "OK" is displayed and other items than [0-0] of [Bus Nodes] are checked, the connection with the External Device is established. Click [OK] and close the dialog box.

  21. Open "Configure Network". Select the using CPU unit and click the [Download] button.

  22. When the "PLC Download Selected Stations" is displayed, click "Yes" and continue to download.

  23. When you finish downloading, the dialog box is closed.

  24. Close the [Configure Network] window. When the [Network Save and Compile] dialog box is displayed, click [Yes].

  25. When the [Save and Compile] dialog box is displayed, click [OK].

External Device setting is completed at above.

 

NOTE