13: SHIFT / ROTATE INSTRUCTIONS13-6 « FC4A MICRO SMART USER ’S MANUAL »ROTL (Rotate Left)Applicable CPU ModulesValid OperandsFor the valid operand number range, see pages 6-1 and 6-2.▲ Internal relays M0 through M1277 can be designated as S1. Special internal relays cannot be designated as S1.The quantity of bits to rotate can be 1 through 15.Since the ROTL instruction is executed in each scan while input is on, a pulse input from a SOTU or SOTD instructionshould be used as required.Valid Data TypesExample: ROTLFC4A-C10R2/C FC4A-C16R2/C FC4A-C24R2/C FC4A-D20K3/S3 FC4A-D20RK1/RS1 & FC4A-D40K3/S3X X X X XOperand Function I Q M R T C D Constant RepeatS1 (Source 1) Data for bit rotation — X ▲ X — — X — —bits Quantity of bits to rotate — — — — — — — 1-15 —W (word) I (integer)X —Before rotation: 1 0 1010 1 0 1 1 1101 0 0CYM8003MSB LSBS11After rotation: 0 1010 1 0 1 1 1101 0 0CYM8003MSB LSBS11Rotate to the leftS1*****bits**When input is on, 16-bit data of the designated source operand S1 is rotated tothe left by the quantity of bits designated by operand bits.The result is set to the source operand S1, and the last bit status rotated out isset to a carry (special internal relay M8003).ROTL(W)When bits to rotate = 1When a bit operand such as Q (output), M (internal relay), or R (shift register) is designatedas the source, 16 points are used.When a word operand such as D (data register) is designated as the source, 1 point is used.Before rotation: D10 = 40966 1 1 0000 0 0 0 0 1100 0 0CYM8003MSB LSBD10After first rotation: D10 = 16397Bits to rotate = 1After second rotation: D10 = 327941 0 0 0001 0 0 0 0 0100 1 1CYM8003MSB LSBD100 1 0 0000 0 0 0 0 1010 1 0CYM8003MSB LSBD10M8120REP M8120 is the initialize pulse special internal relay.When the CPU starts operation, the MOV (move) instruction sets 40966to data register D10.Each time input I0 is turned on, 16-bit data of data register D10 is rotatedto the left by 1 bit as designated by operand bits.The status of the MSB is set to a carry (special internal relay M8003).SOTUI0S1 –40966 D1 –D10S1D10 bits1ROTL(W)MOV(W)
