Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 580

Auxiliary Area Allocations
Addresses Name
Word Bit
A803 --- Online
Replace-
ment
Comple-
A80300
tion Error
Details
A80301
A80302
A80303
A804 --- Details on
duplex
verifica-
tion error
A80400
caused by
different
unit ver-
A80401
sions
A80402
A80403
A80404
Note In CS1D PLCs, the following flags are provided in a special read-only area and can be specified with the
labels given in the table. These flags are not contained in the Auxiliary Area.
Flag area
Condition Code Error Flag
Area
Access Error Flag
Carry Flag
Greater Than Flag
Equals Flag
Less Than Flag
Negative Flag
Overflow Flag
Underflow Flag
Greater Than or Equals
Flag
Not Equal Flag
Less than or Equals Flag <=
Always ON Flag
Always OFF Flag
544
Function
When an online replacement function
failed, the relevant flag will be turned
ON.
No Unit mounted or Unit mounted in
another slot.
Replaced Unit and new Unit are differ-
ent models.
Different unit numbers on replaced and
new Units.
Different node numbers on replaced
and new Units (when replacing a
duplex Communications Unit).
The corresponding bit is turned ON
when a duplex verification error
occurred due to different unit versions.
Ethernet Duplex Setting Flag (PLC
Setup)
Unit Removal without a Programming
Device Function Setting Flag (PLC
Setup)
Removal/Addition of Units without a
Programming Device Setting Flag (PLC
Setup)
Turn ON Error Unit Number Flag when
Removing a Special Unit Setting Flag
(PLC Setup)
Communications Port Auto-allocation
Instruction (Instruction)
Name Label
ER Turns ON when an error occurs in processing an instructions, indi-
cating an error end to the instruction.
AER Turns ON when an attempt is made to access an illegal area. The
status of this flag is maintain only during the current cycle and only
in the task in which it occurred.
CY Turns ON when there is a carry or borrow in a math operation,
when a bit is shifted into the Carry Flag, etc.
> Turns ON when the result of comparing two values is "greater
than," when a value exceeds a specified range, etc.
= Turns ON when the result of comparing two values is "equals,"
when the result of a math operation is 0, etc.
< Turns ON when the result of comparing two values is "less than,"
when a value is below a specified range, etc.
N Turns ON when the MSB in the result of a math operation is 1.
OF Turns ON when the result of a math operation overflows.
UF Turns ON when the result of a math operation underflows.
>= Turns ON when the result of comparing two values is "greater than
or equals."
<> Turns ON when the result of comparing two values is "not equal."
Turns ON when the result of comparing two values is "less than or
equals."
A1 This flag is always ON.
A0 This flag is always OFF.
Settings Status Status at
after startup
mode
change
OFF ON: Held Cleared
Online replace-
ment failed.
ON: Mismatch Held Cleared
OFF: Match
Meaning
Appendix B
Timing Related
Flags,
Settings
--- A80115
When A31600,
duplex A317
verifica-
tion error
occurs