5: SPECIAL FUNCTIONS« FC4A MICRO SMART USER ’S MANUAL » 5-3Run/Stop Selection at Memory Backup ErrorStart control special internal relay M8000 maintains its status when the CPU is powered down. After the CPU has been offfor a period longer than the battery backup duration, the data designated to be maintained during power failure is broken.The Run/Stop Selection at Memory Backup Error dialog box is used to select whether to start or stop the CPU whenattempting to restart operation after the “keep” data in the CPU RAM has been lost.When a built-in lithium battery is fully charged, data of internal relays, shift registers, counters, and data registers stored inthe RAM are maintained for approximately 30 days.Since this setting relates to the user program, the user program must be downloaded to the MicroSmart after changing thissetting.Programming WindLDR1. From the WindLDR menu bar, select Configure > Function Area Settings. The Function Area Settings dialog boxappears.2. Select the Run/Stop tab.Run (Default): Click the button on the left to start the CPU at memory backup error.Stop: Click the button on the right to stop the CPU when attempting to start at memory backup error.When the CPU does not start because of the Stop selection, the CPU can not be started alone, thenthe CPU can still be started by sending a start command from WindLDR to turn on start control spe-cial internal relay M8000. For start/stop operation, see page 4-3.3. Click the OK button.
