Square Root - Root(72) - Omron CQM1H - PROGRAM Programming Manual

Programmable controllers; inner boards

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BCD Calculation Instructions

5-21-11 SQUARE ROOT – ROOT(72)

63,250,561 = 7953.0221

Ladder Symbols

DM 6144 to DM 6655 cannot be used for R.

When the execution condition is OFF, ROOT(72) is not executed. When the

execution condition is ON, ROOT(72) computes the square root of the eight-

digit content of Sq and Sq+1 and places the result in R. The fractional portion

is truncated.

Sq is not BCD.

Indirectly addressed EM/DM word is non-existent.

(Content of *EM/*DM word is not BCD, or the EM/DM area boundary

has been exceeded.)

ON when the result is 0.

The following example shows how to take the square root of an eight digit

number. The result is a four-digit number, with the remainder rounded off. and

then round the result.

In this example, √ 63250561 = 7953.0221..., which is rounded off to 7953.

(The remainder is rounded off.)

IR, SR, AR, DM, EM, HR, TIM/CNT, LR

Address Instruction

Section 5-21

Operand Data Areas

Sq: First source word (BCD)

R: Result word

IR, SR, AR, DM, EM, HR, LR

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