Omron SYSMAC C200HS Operation Manual page 220

Programmable controllers

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BCD Calculations

Mi, M+1,Su, or Su+1 are not BCD.

Indirectly addressed DM word is non-existent. (Content of ∗DM word is

not BCD, or the DM area boundary has been exceeded.)

ON when the result is negative, i.e., when Mi is less than Su.

ON when the result is 0.

The following example works much like that for single-word subtraction. In this

example, however, BSET(71) is required to clear the content of DM 0000 and

DM 0001 so that a negative result can be subtracted from 0 (inputting an 8-digit

constant is not possible).

Turned ON to indicate

negative result.

Section 5-19

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