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Henry Rudman | Support Engineer
In this Tech Tip we will go through the process step-by-step of setting up a PROFINET connection between Emerson's IC695CPL410 and RSTi-EP. In this example we will be communicating to an RSTi-EP EPXPNS001 slave device, the concept can be applied to any PROFINET slave.
What exactly is PROFINET? PROFINET is short for Process Field Net which is an industry-standard for data communication and has many uses, one of these being the control and monitoring of field equipment within an industrial environment.
2.0 Project Configuration
Open PAC Machine Edition (PME) and ensure that is running as administrator. First a new project will need to be created within PME if it has not been already been made. We will be basing this project off the PACSystems RX3i Reckless Template for the IC695CPL410 which can also be used for the IC695CPE400.
Figure 1: New Project Template Selection
Configure the correct controller for project requirements by right-clicking on the device under the hardware configuration as shown in Figure 2 and select Replace Module. A window will pop up and the IC695CPL410 needs to be selected.
Figure 2: Hardware Configuration Option Menu
Configure Ethernet settings for your device as required. Once the Ethernet settings have been configured, add an IO drop to the PROFINET controller. An IO drop can be added by right-clicking on the PROFINET controller and selecting ADD IO-Device. You can add devices within the system as shown in Figure 3. The default list will show devices that are part of Emerson’s range of products. If a third-party device is required, a GSDML file can be uploaded which will import the device into the list. After adding the GSDML file the third-party device can be selected from the menu.
Figure 3: PROFINET IO Drop Option and Device Catalo
Add the required IO to the device by right-clicking on the device and then selecting Change Module List. This will then pop up another window through which modules can be added to the RSTi-EP. Modules are added to the configuration by dragging and dropping onto the left-hand side as shown in Figure 4.
Figure 4: Module List Options and Configuration
3.0 Assign Device Names
To assign device names if they have not already been set, right-click on the PROFINET controller below the IC695CPL410 device. A connection to the PROFINET LAN is required for this section. Once the connection has been made to the PROFINET LAN, launch the Discovery Tool to configure the remote devices.
Figure 5: PROFINET Discovery Tool Option
Select the connection and the LAN then click the Refresh Device List option. The devices will require connection to each other to complete this step. Both the IC695CPL410 and the RSTi-EP show in the device list as demonstrated in Figure 6.
Figure 6: PROFINET Discovery Tool Main Window
Launching the Discovery Tool new devices require configuration such as the device names. Double click on the device that requires naming and enter the name. An example is given below in Figure 7.
Figure 7: PROFINET Device System Properties Window
Once the device name has been specified ensure that the Device Name is matched in the inspector window. Device names are required to match for the PROFINET communication to function correctly. See the example below in Figure 8.
Figure 8: Inspector Window Device Name
4.0 Download Configuration
A download of the configured settings is required to the IC695CPL410. It is essential that devices are named before downloading to the controller. Ensure that the PROFINET devices have been configured correctly by looking in Discovery Tool as shown in previous steps. Downloading programs to the device can be done by selecting the Target tab and then Connect. This process is demonstrated in Figure 9. Once connected to the controller Programmer Mode needs to be selected, once completed click download.
Figure 9: Download Navigation
Additionally, an example is given before and after download to the controller, this is shown in Figure 10 and Figure 11 respectively. Access to devices on the Discovery Tool can only be made on the PROFINET LAN. Programming the controller is required from LAN1 on the IC695CPL410.
Figure 10: Example device configuration before download
Figure 11: Example device configuration after download
5.0 Communications Test to Prove PROFINET Connection
To test the PROFINET communication between the device and controller put the IC695CPL410 into run mode which will allow the IO to be simulated. This will enable the outputs and the IO to be scanned.
The reference table within PME can be used to view input and output values. To simulate that the devices are configured correctly, the output of the EP-2714 has been wired to the input on the EP-1218. The outputs can be toggled by using the bits within the reference table. An easy way to test input and outputs on the same reference table is by generating a new table. This is shown below in Figure 12. Once a new table has been generated add the device address. Device starting addresses can be found by clicking on the module and looking at the address highlighted in Figure 13. An example of the table setup and test is provided below:
Figure 12: Generate New Table Option
Figure 13: Module Starting Address Location
Figure 14: Reference Table with no Bits Toggled
Figure 15: Reference Table after Simulation Bits Toggled
The connection has now been verified through the testing in the reference table. Once the above steps have been completed PROFINET communication is configured between the IC695CPL410 and RSTi-EP. That concludes this how-to guide.
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