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Auxiliary Area Allocations by Function Appendix C
Serial Port 1 Information (CP1L CPU Units with L CPU Type)
Serial Port 2 Information (CP1L CPU Units with M CPU Type)
Serial Port 1 Reception
Completed Flag
(No-protocol Mode)
A392.14 ON when the serial port 1 has completed the reception in
no-protocol mode.
Read-only
Serial Port 1 Reception
Overflow Flag
(No-protocol Mode)
A392.15 ON when a data overflow occurred during reception
through the serial port 1 in no-protocol mode.
Read-only
Peripheral Port PT Commu-
nications Flags
A394.00 to
A394.07
The corresponding bit will be ON when the serial port 1
is communicating with a PT in NT link mode.
Bits 0 to 7 correspond to units 0 to 7.
Read-only
Peripheral Port PT Priority
Registered Flags
A394.08 to
A394.15
The corresponding bit will be ON for the PT that has pri-
ority when the serial port 1 is communicating in NT link
mode.
Read-only
Serial Port 1 Reception
Counter
(No-protocol Mode)
A394.00 to
A394.15
Indicates (in binary) the number of bytes of data received
when serial port 1 is in no-protocol mode.
Read-only
Name Address Description Access Updated
Serial Port 1 Communica-
tions Error Flag
A392.04 ON when a communications error has occurred at the
serial port 1.
Note Not supported for 1:N NT Link Mode.
Read-only
Serial Port 1 Restart Bit A526.00 Turn this bit ON to restart the serial port 1. Read/write
Serial Port 1 Settings
Change Bit
A619.02 ON while the serial port 1’s communications settings are
being changed.
Read/write
Serial Port 1 Error Flags A528.00 to
A528.07
These flags indicate what kind of error has occurred at
the serial port 1.
Read/write
Serial Port 1 Send Ready
Flag (No-protocol mode)
A392.05 ON when the serial port 1 is able to send data in no-pro-
tocol mode.
Read-only
Serial Port 1 Reception
Completed Flag (No-proto-
col Mode)
A392.06 ON when the serial port 1 has completed the reception in
no-protocol mode.
Read-only
Serial Port 1 Reception
Overflow Flag (No-protocol
mode)
A392.07 ON when a data overflow occurred during reception
through the serial port 1 in no-protocol mode.
Read-only
Serial Port 1 PT Communi-
cations Flags
A393.00 to
A393.07
The corresponding bit will be ON when the serial port 1
is communicating with a PT in NT link mode.
Bits 0 to 7 correspond to units 0 to 7.
Read-only
Serial Port 1 PT Priority
Registered Flags
A393.08 to
A393.15
The corresponding bit will be ON for the PT that has pri-
ority when the serial port 1 is communicating in NT link
mode.
Bits 0 to 7 correspond to units 0 to 7.
Read-only
Serial Port 1 Reception
Counter (No-protocol Mode)
A393.00 to
A393.15
Indicates (in binary) the number of bytes of data received
when serial port 1 is in no-protocol mode.
Read-only
Name Address Description Access Updated
Serial Port 2 Communica-
tions Error Flag
A392.04 ON when a communications error has occurred at the
serial port 2.
Read-only
Serial Port 2 Restart Bit A526.00 Turn this bit ON to restart the serial port 2. Read/write
Serial Port 2 Settings
Change Bit
A619.02 ON while the serial port 2’s communications settings are
being changed.
Read/write
Serial Port 2 Error Flags A528.00 to
A528.07
These flags indicate what kind of error has occurred at
the serial port 2.
Read/write
Serial Port 2 Send Ready
Flag
(No-protocol mode)
A392.05 ON when the serial port 2 is able to send data in no-pro-
tocol mode.
Read-only
Serial Port 2 Reception
Completed Flag
(No-protocol Mode)
A392.06 ON when the serial port 2 has completed the reception in
no-protocol mode.
Read-only
Serial Port 2 Reception
Overflow Flag
(No-protocol mode)
A392.07 ON when a data overflow occurred during reception
through the serial port 2 in no-protocol mode.
Read-only
Name Address Description Access Updated
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