Bit Shift Left - Mitsubishi Electric MELSEC-Q/L Programming Manual

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Bit shift left

• QnUDVCPU, LCPU: The serial number (first five digits) is "16112" or later.

(S): Start number (bit) of the bit devices to be stored in empty data after shifting to the left

(D): Start number of bit device to shift to the left (bit)

Bit data length of shift data (n2  n1  1024) (BIN 16 bits)

Number of bit points to shift to the left (n2  n1  1024)

Internal device

*1 Do not set a negative value in the number of bit points (n2) to be shifted to the left.

Processing details

• This instruction shifts bit data for (n2) bits to the left within the data range of (n1) bits starting from (D). After the shift, the

function transfers (n2)-bit data from (S) to the (n2) bits from (D).

(D) to (D)+5 before execution (n2=3)

(1) Overflow (deletion data)

(2) n2 bits shift to the left (n2=3)

(3) Coping n2 points

7 APPLICATION INSTRUCTIONS

7.3 Shift Instructions

Number of (n1) points (n1=9)

(BIN 16 bits)

Number of (n2) points (n2=3)

(S)+2 to (S) before execution (n2=3)