« FC4A MICRO SMART USER ’S MANUAL » 5-15: S PECIAL F UNCTIONSIntroductionThe MicroSmart features special functions such as stop/reset inputs, run/stop selection at memory backup error, keep des-ignation for internal relays, shift registers, counters, and data registers. These functions are programmed using the Func-tion Area Settings menu. Also included in the Function Area Settings are high-speed counter, catch input, interrupt input,communication protocol selection for port 1 and port 2, input filter, and user program read/write protection.This chapter describes these special functions. Clock function, analog potentiometer function, memory cartridge, and con-stant scan features are also described in this chapter.The Function Area Settings for communication functions are detailed in chapters 17 and 25 through 27.Caution • Since all Function Area Settings relate to the user program, the user program must be down-loaded to the MicroSmart after changing any of these settings.Function Area SettingsVarious special functions are programmed in the Function Area Settings. To call the Function Area Settings dialog box,start WindLDR on a Windows PC. From the WindLDR menu bar, select Configure > Function Area Settings. The FunctionArea Settings dialog box appears.Detailed information is described on the following pages.Input filter, clock cartridge adjustment,and user program read/write protectionCommunication mode setting for port 1 (maintenance or userprotocol) and port 2 (maintenance, user, modem protocol, ordata link master/slave communication)Normal input, two/single-phase high-speedcounter, catch input, or interrupt inputKeep/clear designation for internal relays,shift registers, counters, and data registersStop/reset inputs and run/stopselection at memory backup errorResets all Function Area Settingsvalues to defaults.
