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1167
Other Instructions
Section 3-31
3-31-1 SET CARRY: STC(040)
Sets the Carry Flag (CY).
Ladder Symbol
Variations
Applicable Program Areas
Description
When the execution condition is ON, STC(040) turns ON the Carry Flag (CY).
Although STC(040) turns the Carry Flag ON, the flag will be turned ON/OFF
by the execution of subsequent instructions which affect the Carry Flag.
Flags
Note
In CS1-H, CJ1-H, CJ1M, and CS1D (for Single-CPU System) CPU Units,
these Flags are left unchanged.
In CS1 and CJ1 CPU Units, these Flags are turned OFF.
Precautions
ROL(027), ROLL(572), ROR(028), and RORL(573) make use of the Carry
Flag in their rotation shift operations. When using any of these instructions,
use STC(040) and CLC(041) to set and clear the Carry Flag.
3-31-2 CLEAR CARRY: CLC(041)
Purpose
Turns OFF the Carry Flag (CY).
Ladder Symbol
Variations
DISABLE PERIPHERAL SERVICING IOSP
287
1184
ENABLE PERIPHERAL SERVICING
IORS
288
1186
Instruction
Mnemonic
Function code
Page
STC(040)
Variations
Executed Each Cycle for ON Condition
STC(040)
Executed Once for Upward Differentiation
@STC(040)
Executed Once for Downward Differentiation
Not supported.
Immediate Refreshing Specification
Not supported.
Block program areas
Step program areas
Subroutines
Interrupt tasks
OK
OK
OK
OK
Name
Label
Operation
Error Flag
ER
Unchanged (See note.)
Equals Flag
=
Unchanged (See note.)
Carry Flag
CY
ON
Negative Flag
N
Unchanged (See note.)
CLC(041)
Variations
Executed Each Cycle for ON Condition
CLC(041)
Executed Once for Upward Differentiation
@CLC(041)
Executed Once for Downward Differentiation
Not supported.
Immediate Refreshing Specification
Not supported.
Summary of Contents for SYSMAC CS1D-CPU**
Page 3: ...iv...
Page 29: ...xxx...
Page 185: ...146 List of Instructions by Function Code Section 2 4...
Page 1389: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2...
Page 1390: ...1351 Appendix A ASCII Code Table ASCII SP Four leftmost bits Four rightmost bits...
Page 1391: ...1352 ASCII Code Table Appendix A...