I/O AllocationFP2/FP2SH3 − 213.6 I/O Numbers of Free Slots3.6.2.3 When Automatic Allocation is UsedWhen automatic allocation is executed, 16 points are uniformly assigned to each freeslot.With automatic allocation, the contents of allocation are not registered. Assignmentsare performed each time the power of PLC is turned on based on the units actuallymounted.AdvantageAutomatic allocation is convenient when frequent structural changes are conductedsuch as during trial runs and testing of the program. It is convenient when using a largenumber of standard I/O units (units that occupy 16 points).16-point typeDC input unit16-point typetransistor output unitSlots that do notactually exist.CPUbackplaneX0toXFY40toY4FY30toY3F20to2FX10toX1FY170toY17FY160toY16FY190toY19FY180toY18FY210toY21FY200toY20FX220toX25F260to26F50to5F60to6F150to15FExpansionbackplaneSlot No.Freeslot64-pointtype DCinput unit16-point typerelay output unit16 points are assigned to freemodules (free slots).16 points are assigned to freemodules (free slots).