### 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

- When using IPC, clock synchronization is not supported. The setting of [Clock Synchronization] in BLUE is ignored.