GE Grid Solutions D25User's ManualGE Information 994-0081-3.00-21 93Chapter 4: Configuring the D25 SoftwareD25 SoftwareD25 Software The D25 is factory configured and tested. It contains all software required tobe a fully functional system and upload and download configurationdatabases.You may need to download configuration files to your D25:• If the D25 has performed self-diagnostics and determined that the FLASHmemory is either erased or corrupted• Other test messages indicate that the FLASH memory has been erased orcorrupted• After maintenance or replacement work which has deleted the FLASH code filesUse this section as a guide for:• An overview of the software and software tools you will use• Information and procedures for maintaining code and configuration files• How to test the functionality of the inputs and outputs controlled by the D25Plant I/O• A discussion of code and configuration files• How to remove configuration files from memory• How to install new or replacement code files using a serial connectionOverview The D25 system software consists of two distinct components:1. Base System2. ApplicationsBase SystemSoftwareThe Base System Software resident in the D25 provides a consistent, stableoperating environment for the Applications that provide specific functionalityto the D25.The Base System Software consists of:• Software that is resident on the BootROM• Base Applications that are required for the operation of the hardware.