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Auxiliary Area Section 9-11
■ Information on Explicit Message Instructions
■ Peripheral Port Communications Information
Name Address Description Access
Explicit Communications Error
Flag
A21300 to
A21307
Turn ON when an error occurs in executing an Explicit Mes-
sage Instruction (EXPLT, EGATR, ESATR, ECHRD, or
ECHWR).
Bits 00 to 07 correspond to communications ports 0 to 7.
The corresponding bit will turn ON both when the explicit
message cannot be sent and when an error response is
returned for the explicit message.
The status will be maintained until the next explicit message
communication is executed. The bit will always turn OFF
when the next Explicit Message Instruction is executed.
Read-only
Network Communications
Error Flag
A21900 to
A21907
Turn ON if the explicit message cannot be sent when execut-
ing an Explicit Message Instruction (EXPLT, EGATR,
ESATR, ECHRD, or ECHWR).
Bits 00 to 07 correspond to communications ports 0 to 7.
The corresponding bit will turn ON when the explicit mes-
sage cannot be sent.
The status will be maintained until the next explicit message
communication is executed. The bit will always turn OFF
when the next Explicit Message Instruction is executed.
Read-only
Network Communications
Response Code
A203 to
A210
The following codes will be stored when an Explicit Message
Instruction (EXPLT, EGATR, ESATR, ECHRD, or ECHWR)
has been executed.
A203 to A210 correspond to communications ports 0 to 7.
If the Explicit Communications Error Flag turns OFF, 0000
hex is stored.
If the Explicit Communications Error Flag is ON and the Net-
work Communications Error Flag is ON, the FINS end code
is stored.
If the Explicit Communications Error Flag is ON and the Net-
work Communications Error Flag is OFF, the explicit mes-
sage end code is stored.
During communications, 0000 hex will be stored and the
suitable code will be stored when execution has been com-
pleted. The code will be cleared when operation is started.
Read-only
Name Address Description Access
Peripheral Port Communica-
tions Error Flag
A39212 ON when a communications error has occurred at the
peripheral port.
Note: This flag is disabled in NT Link (1:N) mode.
Read-only
Peripheral Port Restart Bit A52601 Turn this bit ON to restart the peripheral port. Read/write
Peripheral Port Settings
Change Bit
A61901 ON while the peripheral port’s communications settings are
being changed.
Read/write
Peripheral Port Error Flags A52808 to
A52815
These flags indicate what kind of error has occurred at the
peripheral port.
Read/write
Peripheral Port PT Communi-
cations Flags
A39400 to
A39407
The corresponding bit will be ON when the peripheral port is
communicating with a PT in NT link mode. Bits 0 to 7 corre-
spond to units 0 to 7.
Read-only
Peripheral Port PT Priority
Registered Flags
A39408 to
A39415
The corresponding bit will be ON for the PT that has priority
when the peripheral port is communicating in NT link mode.
Bits 0 to 7 correspond to units 0 to 7.
Read-only
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