A-133
Appendices
CJ2 CPU Unit Software User’s Manual
A-3 Auxiliary Area
App
A-3-1 Read-only Area (Set by System)
A360
to
A391
A360.01
to
A391.15
Executed FAL
Number Flags
The flag corresponding to the specified FAL number will be turned
ON when FAL(006) is executed. Bits A360.01 to A391.15 corre-
spond to FAL numbers 001 to 511.
ON: That FAL was executed
OFF: That FAL wasn't executed
The flag will be turned OFF when the error is cleared.
Retained Cleared Refreshed when
error occurs.
A402.15
A392 A392.04 Serial Port Error
Flag
ON when an error has occurred at the RS-232C port. (Do not
access this bit in Peripheral Bus Mode, 1:N NT Link mode, or
Serial PLC Link Polling/Polled Unit mode.)
ON: Error
OFF: No error
Retained Cleared Refreshed when
error occurs.
A392.05 Serial Port Send
Ready Flag (No-
protocol mode)
ON when the RS-232C port is able to send data in no-protocol
mode.
ON: Able-to-send
OFF: Unable-to-send
Retained Cleared Written after trans-
mission
A392.06 Serial Port
Reception Com-
pleted Flag
(No-protocol
mode)
ON when the RS-232C port has completed the reception in no-
protocol mode.
• When the number of bytes was specified: ON when the speci-
fied number of bytes is received.
• When the end code was specified: ON when the end code is
received or 256 bytes are received.
Retained Cleared Written after recep-
tion
A392.07 Serial Port
Reception Over-
flow Flag
(No-protocol
mode)
ON when a data overflow occurred during reception through the
RS-232C port in no-protocol mode.
• When the number of bytes was specified: ON when more data
is received after the reception was completed but before
RXD(235) was executed.
• When the end code was specified: ON when more data is
received after the end code was received but before RXD(235)
was executed.
ON when 257 bytes are received before the end code.
ON: Overflow
OFF: No overflow
Retained Cleared
A393 A393.00
to
A393.07
Serial Port PT
Communications
Flag
The corresponding bit will be ON when the serial port is communi-
cating in NT Link Mode or in Serial PLC Link Mode.
Bits 0 to 7 correspond to units 0 to 7.
ON: Communicating
OFF: Not communicating
Retained Cleared Refreshed when
there is a normal
response to the
token.
A393.08
to
A393.15
Serial Port PT
Priority Regis-
tered Flags
The corresponding bit will be ON for the PT that has priority when
the RS-232C port is communicating in NT link mode.
Bits 0 to 7 correspond to units 0 to 7.
These flags are written when the priority registration command is
received.
ON: Priority registered
OFF: Priority not registered
Retained Cleared See Function col-
umn.
A393.00
to
A393.15
Serial Port
Reception
Counter (No-pro-
tocol mode)
Indicates (in binary) the number of bytes of data received when
the RS-232C port is in no-protocol mode.
Retained Cleared Refreshed when
data is received.
Address
Name Function
Status
after mode
change
Status at
startup
Write timing/
Related flags, set-
tings
Words Bits
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