Chapter 6 Applied Instructions Symbol D ： Device to rotate n ： Number of bits in a group 6_ Explanation 1. This instruction divides the bits in the device specified by D into groups ( n bits in a group), and then rotates these groups to the left. 2. Only the DROL instruction can use the 32-bit counter, but not the device E. 3. For 16-bit instructions, the value of n must be between 1–16. For 32-bit instructions, the value of n must be between 1–32. When n is less than 0, the instruction is not executed. When n exceeds the range, the instruction is executed with n at the maximum value (32) of the range. 4. In general, the ROLP and DROLP pulse instructions are used.
6-259 API Instruction code Operand Function 0902 D ROL P D, n Rotating bits in a group to the left Device X Y M S T C HC D FR SM SR E K 16# “$” F D n BOOL WORD DWORD LWORD UINT INT DINT LINT REAL LREAL TMR CNT STRING Data type D n Pulse instruction 16-bit instruction 32-bit instruction ES3 ES3 ES3