Chapter 4 Basic Instructions Explanation The instruction ANB is used to perform the AND operation on the logical operation result reserved previously and the contents of the present accumulation register. Ladder diagram Instruction code: Description: Example Loading the Form A contact X0.0 LD X0.0 ORI X0.2 Connecting the Form B contact X0.2 in parallel Block A Block B LDI X0.1 Loading the Form B contact X0.1 Connecting the Form A contact X0.3 in parallel OR X0.3 OUT Y0.1 Driving the coil Y0.1 The instruction ORB is used to perform the OR operation on the logical operation result reserved previously and the contents of the present accumulation register.
Explanation Ladder diagram Instruction code: Description: LD X0.0 Loading the Form A contact X0.0 Example X0.0 X0.1 Block A ANI X0.1 Connecting the Form B contact X0.1 in series Block B LDI X0.2 Loading the Form B contact X0.2 AND X0.3 Connecting the Form A contact X0.3 in series OUT Y0.1 Driving the coil Y0.1 4-7 Instruction code Operand Function ANB – Connecting circuit blocks in series ANB Y0.1 X0.2 X0.3 Connecting the ANB circuit blocks in series Instruction code Operand Function ORB – Connecting circuit blocks in parallel Y0.1 ORB X0.2 X0.3 Connecting the ORB circuit blocks in parallel