// Byte operationLD I0.0ANDB VB1, VB2// Word or actionMOVW VW100, VW300ORW VW200, VW300// Double word exclusive-OR operationXORD AC0, AC1// Byte negated operationMOVB VB5, VB6INVB VB6 Operation is as follows:VB1 VB2 VB20001 1100 WAND 1100 1101 → 0000 1100VW100 VW200 VW3000001 1101 1111 1010 WOR 1110 0000 1101 1100 → 1111 1101 1111 1110VB5 VB60000 1111 INV … Continue reading Siemens PLC Logical programming Ladder Logic

Logical operation is unsigned number bit by bit AND, OR, XOR, inversion and other operations. The length of the operands have B, W, DW.1. Logic and (WAND) command: input IN1, IN2 logic operation by phase and, get, into the storage unit specified by OUT.2. Logical OR (WOR) command: input IN1, IN2 bitwise or logical operation … Continue reading Siemens S7-200 PLC logic operation instruction

D     I0.1MOVR   3.14159, AC1/R     180.0, AC1*R     45.0, AC1SIN    AC1, AC0

Real additions (ADD-R), subtraction (SUB-R) instruction: two 32-bit real numbers are added or subtracted, and produces a 32-bit real number result, the output from the designated storage unit OUT.Real multiplication (MUL-R), a divider (DIV-R) command: enable input is active, the two 32-bit real number multiplied (except), and produces a 32-bit product (quotient), a storage unit … Continue reading Siemens S7 PLC real number arithmetic instruction

Mathematical functions transform comprises the square root, natural logarithm, exponential, trigonometric functions and so on. (1) Square Root (SQRT) instruction: 32-bit real number (IN) taking the square root, and produces a 32-bit real number result, the output from the designated storage unit OUT. (2) natural logarithm (LN) instruction: IN values in natural logarithm, and place the result … Continue reading Siemens PLC Mathematical function transformation instruction