7: BASIC INSTRUCTIONS7-6 « FC4A MICRO SMART USER ’S MANUAL »BPS (Bit Push), BRD (Bit Read), and BPP (Bit Pop)The BPS (bit push) instruction is used to save the result of bit logical operation temporarily.The BRD (bit read) instruction is used to read the result of bit logical operation which was saved temporarily.The BPP (bit pop) instruction is used to restore the result of bit logical operation which was saved temporarily.When using WindLDR, the user need not program the BPS, BRD, and BPP instructions. The circuit in the ladder diagramshown below is converted into BPS, BRD, and BPP when the ladder diagram is compiled.I0 I1I2Ladder DiagramI0 ONOFFI1 ONOFFI2 ONOFFI3 ONOFFTiming ChartQ1 ONOFFI3Q2 ONOFFQ3 ONOFFWhen both inputs I0 and I1 are on, output Q1 is turned on.When both inputs I0 and I2 are on, output Q2 is turned on.When both inputs I0 and I3 are on, output Q3 is turned on.BPSBPPBRDInstruction DataLODBPSANDOUTBRDANDOUTBPPANDOUTI0I1Q1I2Q2I3Q3Program ListQ1Q2Q3
