Title: +038=360.000-OU045T_05-PCD2.m4160 PLS SBC - User Manual.pdf
PCD2.M4160 | PCD2.M45609Data retention, Real time clock and battery module slot9.1Usage of optional battery moduleThe slot for the PCD3 battery module will be unused for the most of applications.  This option will be used only for customers they need to keep the real time clock  up to date when the system stays unpowered more than 10 days.For an unpowered duration up to 10 days, the real time clock stays alive by a  super-capacitor.9.2User program dataThe user program medias (registers, flags, etc.) are stored in a non-volatile memo- ry. That means the information is not lost when the system is unpowered and even  if the system has no battery module plugged.User Manual PCD2.M4x60 │ Document 27-648 │ Edition ENG06 │ 2020-10-219-1Usage as normal digital inputs10Interruptive- or digital inputs terminal block X8terminal block X825 24 23 22 21 20DI_IX3 DI_IX2 DI_IX1 DI_IX0Interrupt- inputsTerminal block X8Digital inputs respecting standard IEC 61131-2: