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Auxiliary Area Allocations by Address
Address
Name
Words
Bits
A394
A394.08
Serial Port 1
to
PT Priority
A394.15
Registered
Flags
A394.00
Serial Port 1
to
Reception
A394.15
Counter
(No-protocol
Mode)
A395
A395.10 ER/AER Flag
for Back-
ground Execu-
tion
A395.11 Memory Cor-
ruption
Detected Flag
A395.12 DIP Switch
Pin 6 Status
Flag
A400
All
Error code
A401
A401.00 Other Fatal
Error Flag
A401.06 FALS Error
Flag
(fatal error)
A401.08 Cycle Time
Too Long Flag
(fatal error)
660
Function
The corresponding bit will be ON for
the PT that has priority when the
serial port 1 is communicating in NT
link mode.
Bits 0 to 7 correspond to units 0 to 7.
These flags are written when the pri-
ority registration command is
received.
Indicates (in binary) the number of
bytes of data received when serial
port 1 is in no-protocol mode.
ON when an instruction processing
error or an illegal area access error
occurs during background process-
ing.
ON when memory corruption is
detected when the power supply is
turned ON.
The status of pin 6 on the DIP switch
on the front of the CPU Unit is written
to this flag every cycle.
When a non-fatal error (user-defined
FALS(006) or system error) or a fatal
error (user-defined FALS(007) or
system error) occurs, the 4-digit
hexadecimal error code is written to
this word. When two or more errors
occur simultaneously, the highest
error code will be recorded.
ON when a fatal error that is not
defined for A401.01 to A401.15
occurs. Detailed information is output
to the bits of A314.
There are no errors that affect this
flag at this time. This flag is reserved
by the system.
ON when a fatal error is generated
by the FALS(006) instruction. The
CPU Unit will stop operating and the
ERR/ALM indicator will light.
The corresponding error code will be
written to A400. Error codes C101 to
C2FF correspond to FALS numbers
001 to 511.
This flag will be turned OFF when
the FALS errors are cleared.
ON if the cycle time exceeds the
maximum cycle time set in the PLC
Setup (the cycle time monitoring
time). CPU Unit operation will stop
and the ERR/ALM indicator on the
front of the CPU Unit will light.
This flag will be turned OFF when
the error is cleared.
Settings
Status
Status
after
at star-
mode
change
ON: Priority
Retained Cleared
registered
OFF: Priority
not registered
---
Retained Cleared
ON: Error.
Cleared
Cleared
OFF (0) when
power is
turned ON.
OFF (0) when
operation
starts.
OFF: No
errors. OFF
(0) when
background
processing
starts.
ON: Memory
Retained See
corruption
Func-
tion col-
OFF: Normal
umn.
operation
ON: Pin 6 ON
Retained See
Func-
OFF: Pin 6
tion col-
OFF
umn.
---
Cleared
Cleared
OFF: No
Cleared
Cleared
other fatal
error
ON: Other
fatal error
ON:
Cleared
Cleared
FALS(006)
executed
OFF:
FALS(006)
not executed
OFF: Cycle
Cleared
Cleared
time under
max.
ON: Cycle
time over
max.
Appendix D
Write
Related
timing
flags, set-
tup
tings
See Func-
---
tion col-
umn.
Refreshed
---
when data
is received.
---
---
Refreshed
---
when
power is
turned ON.
Written
---
every
cycle.
Refreshed
---
when error
occurs.
Refreshed
A314
when error
occurs.
Refreshed
A400
when error
occurs.
Refreshed
PLC
when the
Setup
cycle time
(Cycle
exceeds
time moni-
maximum.
toring
time)
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