AH500 Motion Control Module Manual 4.2 Descriptions of the Basic Instructions The instruction LD applies to the Form A contact which starts from a busbar or the Form A contact which is the start of a circuit. It reserves the present contents, and stores the state which is gotten in the accumulation register. Explanation Ladder diagram: Instruction code: Description: Example X0.0 X0.1 Y0.1 AND X0.1 Connecting the Form A contact X0.1 in series OUT Y0.1 Driving the coil Y0.1 The instruction LDI applies to the Form B contact which starts from a busbar or the Form B contact which is the start of a circuit.
It reserves the present contents, and stores the state which is gotten in an accumulation register. Explanation Ladder diagram Instruction code: Description: Example X0.0 X0.1 Y0.1 AND X0.1 Connecting the Form A contact X0.1 in series OUT Y0.1 Driving the coil Y0.1 4-4 Instruction code Operand Function LD S Loading a Form A contact Device Xn.n Yn.n M S K 16# F KnM KnS D W T C V Z S LD X0.0 Loading the Form A contact X0.0 Instruction code Operand Function LDI S Loading a Form B contact Device Xn.n Yn.n M S K 16# F KnM KnS D W T C V Z S Loading the Form LDI X0.0 B contact X0.0