403
Auxiliary Area Section 9-11
■ CPU Bus Unit Information
■ Special I/O Unit Information
■ Other PLC Operating Information
Name Address Description Access
CPU Bus Unit Number Dupli-
cation Flags
A41000 to
A41015
The Duplication Error Flag (A40113) and the corresponding
flag in A410 will be turned ON when a CPU Bus Unit’s unit
number has been duplicated.
Bits 00 to 15 correspond to unit numbers 0 to F.
Read-only
CPU Bus Unit Error, Unit
Number Flags
A41700 to
A41715
When an error occurs in a data exchange between the CPU
Unit and a CPU Bus Unit, the CPU Bus Unit Error Flag
(A40207) and the corresponding flag in A417 are turned ON.
Bits 00 to 15 correspond to unit numbers 0 to F.
Read-only
CPU Bus Unit Setting Error,
Unit Number Flags
A42700 to
A42715
When a CPU Bus Unit Setting Error occurs, A40203 and the
corresponding flag in A427 are turned ON.
Bits 00 to 15 correspond to unit numbers 0 to F.
Read-only
CPU Bus Unit Setting Error
Flag
(Non-fatal error)
A40203 ON when an installed CPU Bus Unit does not match the
CPU Bus Unit registered in the I/O table.
Read-only
CPU Bus Unit Error Flag
(Non-fatal error)
A40207 ON when an error occurs in a data exchange between the
CPU Unit and a CPU Bus Unit (including an error in the CPU
Bus Unit itself).
Read-only
Name Address Description Access
Special I/O Unit Number
Duplication Flags
A41100 to
A41615
The Duplication Error Flag (A40113) and the corresponding
flag in A411 through A416 will be turned ON when a Special
I/O Unit’s unit number has been duplicated. (Bits A41100 to
A41615 correspond to unit numbers 0 to 95.)
Read-only
Special I/O Unit Setting Error
Flag
(Non-fatal error)
A40202 ON when an installed Special I/O Unit does not match the
Special I/O Unit registered in the I/O table.
Read-only
Special I/O Unit Setting Error,
Unit Number Flags
A42800 to
A43315
When a Special I/O Unit Setting Error occurs, A40202 and
the corresponding flag in these words are turned ON. (Bits
A42800 to A43315 correspond to unit numbers 0 to 95.)
Read-only
Special I/O Unit Error Flag
(Non-fatal error)
A40206 ON when an error occurs in a data exchange between the
CPU Unit and a Special I/O Unit (including an error in the
Special I/O Unit itself).
Read-only
Special I/O Unit Error, Unit
Number Flags
A41800 to
A42315
When an error occurs in a data exchange between the CPU
Unit and a Special I/O Unit, the Special I/O Unit Error Flag
(A40206) and the corresponding flag in these words are
turned ON. (Bits A42800 to A43315 correspond to unit num-
bers 0 to 95.)
Read-only
Name Address Description Access
Battery Error Flag
(Non-fatal error)
A40204 ON if the CPU Unit’s battery is disconnected or its voltage is
low and the PLC Setup has been set to detect this error.
(Detect Low Battery)
Read-only
Cycle Time Too Long Flag
(Fatal error)
A40108 ON if the cycle time exceeds the maximum cycle time set in
the PLC Setup. In the Parallel Processing Modes, the pro-
gram execution cycle time will be used. (Watch Cycle Time)
Read-only
Peripheral Servicing Too Long
Flag (Fatal error, CJ1-H CPU
Unit only.)
A40515 Turns ON when the peripheral servicing time in a Parallel
Processing Mode exceeds 2 s. This will also cause a cycle
time error and operation will stop.
Read-only
FPD Teaching Bit A59800 Turn this bit ON to set the monitoring time in FPD(269) auto-
matically with the teaching function.
Read/write
Memory Backup Battery Fail-
ure Flag
A39511 Data from the I/O memory areas that are maintained when
power is turned OFF (HR, DM, etc.) are backed up with a
Battery. A39511 turns ON if the Battery voltage drops and
the data can no longer be maintained. The data in the I/O
memory will not be dependable when this happens.
Read-only
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