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

In STEP 7 can be integers, long integers and real numbers to add, subtract, multiply and divide arithmetic. Arithmetic instructions in accumulator 1 and 2 were as minuend or dividend accumulator value 2 in. Result of an arithmetic of preservation, the original value of the accumulator 1 Accumulator 1 is covered in the calculation result, … Continue reading Siemens S7 series PLC integer arithmetic instructions

Conversion Instructions ACCU 1 data type conversion, the conversion still result in accumulator l. Switching operation can be realized are: Conversion BCD and integer and long integer between real and long integer between numbers negated negation, byte expansion.In STEP 7, the integer and long integer expressed as a complement form. BCD code values, there are … Continue reading Siemens S7 series PLC Conversion between integer and BCD