If the PAC cannot find the PROFINET slave module, be sure to double check the mechanical installationinstructions in Chapter 6.If the PROFINET Master cannot communicate with the PAC:1. Check if the Slave is set up correctly. Refer to the configuration section of Chapter 6.2. Check if the Master is set up correctly. Refer to the documentation of the master.3. Check if the configuration of the Master and Slave match. To configure the Controller, a GSDMLfile (device description file) is required. The settings in the used Controller must comply with thesettings in the Device to establish communication. Important parameters are Station Name,Vendor ID, Device ID, and Input and Output Data Bytes.4. Double check the cabling between the Master and Slave. Try a different cable.Secure Digital (SD) CardThe PAC comes with a Secure Digital (SD) Card from the factory. It is highly recommended that you onlyuse SD cards purchased from Parker. Replacement SD cards can be purchased from Parker using partnumber 33-026611-01.When you order a PAC, the SD card comes from the factory loaded with the Operating System and othernecessary files to run the PAC. When you save your project with Parker Automation Manager, it will alsobe stored on the SD card. Do not remove or modify any files on the SD card unless instructed to in thedocumentation. This card is used as a removable drive and provides non-volatile memory storage.Although this card is removable, it must be inserted in the controller at power up and cannot be removedwhile the PAC is powered on.The SD card is not recommended to be written to during run time. This could corrupt the SD card andcause failures on the next power cycle. If you need to log or store data, we recommend using the USBport.If you are having difficulties powering up the PAC (the Error LED is Red), it could be associated with the SDCard. The SD Card has been specially formatted for the PAC. Make sure you are using a Parker SD cardand it has all of the necessary files on the card. You can use the Flashback Utility to restore the SD cardback to factory settings that includes the proper format. Refer to the Flashback Utility section of thisinstallation guide for more details on how to use this feature. It may be necessary to try a replacement SDcard if you continue to have power up issues that are associated with the faulty card.Note: SD Cards over 32 GB are not compatible.Log FilesLog files are extremely useful for debugging and/or for other support purposes. Log files are automatically\Windows\Parker\Logs\directory. Log files are created on an as needed basis; that is, they are created only when the need to write