Omron C200H - Clear Carry - Clc(41); Bcd Add - Add(30)

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5-17-4 CLEAR CARRY – CLC(41)
Ladder Symbols
CLC(41) @CLC(41)
When the execution condition is OFF, CLC(41) is not executed.When the ex-
ecution condition is ON, CLC(41) turns OFF CY (SR 25504).
CLEAR CARRY is used to reset (turn OFF) CY (SR 25504) to “0”.
5-17-5 BCD ADD – ADD(30)
Au: Augend word (BCD)
IR, SR, AR, DM, HR, TC, LR, #
Ad: Addend word (BCD)
IR, SR, AR, DM, HR, TC, LR, #
Ladder Symbols
Operand Data Areas
R: Result word
IR, AR, DM, HR, LR
ADD(30)
Au
Ad
R
@ADD(30)
Au
Ad
R
When the execution condition is OFF, ADD(30) is not executed. When the
execution condition is ON, ADD(30) adds the contents of Au, Ad, and CY,
and places the result in R. CY will be set if the result is greater than 9999.
Au + Ad + CY CY R
Flags ER: Au and/or Ad is not BCD.
Indirectly addressed DM word is non-existent. (Content of *DM word
is not BCD, or the DM area boundary has been exceeded.)
CY: ON when there is a carry in the result.
EQ: ON when the result is 0.
If 00002 is ON, the program represented by the following diagram clears CY
with CLC(41), adds the content of LR 25 to a constant (6103), places the re-
sult in DM 0100, and then moves either all zeros or 0001 into DM 0101 de-
pending on the status of CY (25504). This ensures that any carry from the
Description
Example
BCD Calculations Section 5-17