OPERATION MANUAL

Auxiliary Area Appendix B
Address Name Function Status Status at
Words Bits
after
mode
change
startup
Cleared --- ---
A202 A20200
to
A20207
A203 to
A210
A213 A21300
to
A21307
710
Communications
Port
Enabled
Flags
All Communications
Port
Completion
Codes
Explicit
Communications
Error Flag
ON when a network instruction (SEND, RECV, CMND,
or PMCR) or background execution (not supported by
CS1@-CPU@@(-V1) Units) can be executed with the
corresponding port number. Bits 00 to 07 correspond
to communications ports 0 to 7.
1: Network instruction is not being executed
0: Network instruction is being executed (port busy)
When two or more network instructions are programmed
with the same port number, use the corresponding
flag as an execution condition to prevent the
instructions from being executed simultaneously.
(The flag for a given port is turned OFF while a network
instruction with that port number is being executed.)
(When the simple backup operation is used to performed
a write or compare operation for a Memory
Card, a communications port will be automatically allocated,
and the corresponding Flag will be turned OFF.)
These words contain the completion codes for the corresponding
port numbers when network instructions
(SEND, RECV, CMND, or PMCR) or background execution
has been executed.
Words A203 to A210 correspond to communications
ports 0 to 7.
Non-zero: Error code
0000: Normal condition
The following codes will be stored when an Explicit
Message Instruction (EXPLT, EGATR, ESATR,
ECHRD, or ECHWR) has been executed.
If the Explicit Communications Error Flag turns OFF,
0000 hex is stored.
If the Explicit Communications Error Flag is ON and
the Network Communications Error Flag is ON, the
FINS end code is stored.
If the Explicit Communications Error Flag is ON and
the Network Communications Error Flag is OFF, the
explicit message end code is stored.
During communications, 0000 hex will be stored and
the suitable code will be stored when execution has
been completed. The code will be cleared when operation
is started.
(The completion code for a given port is cleared to
0000 when a network instruction with that port number
is executed.)
(When the simple backup operation is used to performed
a write or compare operation for a Memory
Card, a communications port will be automatically allocated,
and a completion code will be stored in the corresponding
word.)
Turn ON when an error occurs in executing an Explicit
Message Instruction (EXPLT, EGATR, ESATR,
ECHRD, or ECHWR).
Bits 00 to 07 correspond to communications ports 0 to
7.
1: Error end
0: Normal end
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.
Cleared --- ---
Write timing/
Related flags,
settings
Cleared --- A21900 to A21907
A203 to A210