Logic Instructions; Complement - Com(29) - Omron CQM1H - PROGRAM Programming Manual

Programmable controllers; inner boards

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Logic Instructions

5-25-1 COMPLEMENT – COM(29)

The following diagram shows the relationship between the input data and

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 if the source data is not recognized as floating-point data.

ON if both the exponent and mantissa of the result are 0.

ON if the absolute value of the result is too large to be expressed as a

32-bit floating-point value. (The result will be output as ±∞ .)

Ladder Symbols

DM 6144 to DM 6655 cannot be used for Wd.

When the execution condition is OFF, COM(29) is not executed. When the

execution condition is ON, COM(29) clears all ON bits and sets all OFF bits in

The complement of Wd will be calculated every cycle if the undifferentiated

form of COM(29) is used. Use the differentiated form (@COM(29)) or com-

bine COM(29) with DIFU(13) or DIFD(14) to calculate the complement just

S: Input data

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

Section 5-25

Operand Data Areas

Wd: Complement word

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