Adding the Module to an Existing Project

1. Add the MVI56-PDPS module to the project. Right-click the mouse button on the I/O Configuration option in the Controller Organization window to display a pop-up menu. Select the New Module option from the I/O Configuration menu.

This action opens the following dialog box:

2. Select the 1756-Module (Generic 1756 Module) from the list and click OK.

3. Enter the Name, Description and Slot options for your application, using the values in the illustration above. You must select the Comm Format as Data - INT in the dialog box, otherwise the module will not communicate over the backplane of the CompactLogix rack.

4. Configure the Connection Parameters to match to the Block Transfer Size parameter in the configuration file. Use the values in the table corresponding with the block transfer size you configured.

5. Click Next to continue.

6. Select the Request Packet Interval value for scanning the I/O on the module.
This value represents the minimum frequency the module will handle scheduled events. This value should not be set to less than 1 millisecond.
Values between 1 and 10 milliseconds should work with most applications.

7. Save the module. Click OK to dismiss the dialog box. The Controller Organization window now displays the module's presence. The following illustration shows the Controller Organization window:

8. Copy the Controller Tags from the sample program.

9. Copy the User Defined Data Types from the sample program.

10. Copy the Ladder Rungs from the sample program.

11. Save and Download the new application to the controller and place the processor in run mode.


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Introduction

The main propose of this is explain how to set up a communication between an AB PLC and a Siemens PLCs using Profibus Protocol.

The equipment required to make the communication are enlisted below.

- CPU Siemens with a DP Port.
- PLC Allen Bradley capable to support a 3dr Party Profibus Module.
- Prosoft Module (Profibus DP Slave Communication Module).

The next image shows the architecture of the network that is suggested.

Set up the module on the Siemens network
To set up the module on the Siemens network we need to follow the steps below.

1.- Open Simatic Manager.

2.- Once opened, we should open the Project on File->Open. Next find and select Hardware like its show below.

3.- Double click on Hardware and it will open the HW Config program. Here is where we need to add a Prosoft Module GSD, the GSD file is named “PSFT0988.gsd”. to add the GSD file in the HW Config program we need go to the main menu and find tools, next we find and select the option Install GSD File as its show in the image below.

4.- Once the GSD file is installed we have to look forward in the explorer tree showed in the right side of the program (Hardware Catalog) to add it into the Hardware Config area as its show below.

5.- Now we need to assign to the module an address node to work in the network and also configure the decentralized periphery adding how many words input/output we are going to need. In the image below are showed an example of the words that we can use.

6.- Once we select the words that we need, we have to drag and drop the words into the decentralized periphery area, as its show below we select 16 words input and 16 words output to share information.

7.- Now we take note of the registers that were assigned to the inputs and outpus words, in the example above the registers assigned were:

Notice that those registers will be different depends on the project IO configuration!!!

8.- Now we have to put the information to share on these registers, input registers are information read it from an AB PLC and the Outpus registers are the information that you will write on the AB PLC.

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