Omron CQM1H - PROGRAM Programming Manual page 306

Programmable controllers; inner boards

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Comparison Instructions

Saving CMP(20) Results

Address Instruction

When the execution condition is OFF, CMP(20) is not executed. When the

execution condition is ON, CMP(20) compares Cp1 and Cp2 and outputs the

result to the GR, EQ, and LE flags in the SR area.

Placing other instructions between CMP(20) and the operation which

accesses the EQ, LE, and GR flags may change the status of these flags. Be

sure to access them before the desired status is changed.

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 Cp1 equals Cp2.

ON if Cp1 is less than Cp2.

ON if Cp1 is greater than Cp2.

The following example shows how to save the comparison result immediately.

If the content of HR 09 is greater than that of 010, 10200 is turned ON; if the

two contents are equal, 10201 is turned ON; if content of HR 09 is less than

that of 010, 10202 is turned ON. In some applications, only one of the three

OUTs would be necessary, making the use of TR 0 unnecessary. With this

type of programming, 10200, 10201, and 10202 are changed only when

CMP(20) is executed.

Address Instruction

Section 5-19

Greater Than

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