Omron CP1H CPU UNITS - PROGRAMMING 05-2007, Operation Manual

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Auxiliary Area Allocations by Function
Appendix C
Communications
Networks
Network Communications Information
Information When Automatically Allocating Communications Ports
Name Address Description Access Updated
Communications Port
Enabled Flags A202.00 to
A202.07 ON when a network instruction or background execution
can be executed with the corresponding port number.
Bits 00 to 07 correspond to communications ports 0 to 7. Read-only
Communications Port Com-
pletion Codes A203 to
A210 These words contain the completion codes for the corre-
sponding port numbers when network instructions have
been executed. The corresponding word will be cleared
when background execution has been completed.
Words A203 to A210 correspond to communications
ports 0 to 7. Read-only
Communications Port Error
Flags A219.00 to
A219.07 ON when an error occurred during execution of a net-
work instruction.
OFF when a normal response is returned.
Bits 00 to 07 correspond to communications ports 0 to 7.
Read-only
Name Address Description Access Updated
Network Communications
Port Allocation Enabled Flag A202.15 ON when there is a communications port available for
automatic allocation.
Note Use this flag to confirm whether a communica-
tions port is available for automatic allocation
before executing communications instructions
when using 9 or more communications instruc-
tions simultaneously.
Read-only
First Cycle Flags after Net-
work Communications Fin-
ished A214.00 to
A214.07 Each flag will turn ON for just one cycle after communi-
cations have been completed. Bits 00 to 07 correspond
to ports 0 to 7. Use the Used Communications Port Num-
ber stored in A218 to determine which flag to access.
Note These flags are not effective until the next cycle
after the communications instruction is executed.
Delay accessing them for at least one cycle.
Read-only
First Cycle Flags after Net-
work Communications Error A215.00 to
A215.07 Each flag will turn ON for just one cycle after a communi-
cations error occurs. Bits 00 to 07 correspond to ports 0
to 7. Use the Used Communications Port Number stored
in A218 to determine which flag to access. Determine the
cause of the error according to the Communications Port
Completion Codes stored in A203 to A210.
Note These flags are not effective until the next cycle
after the communications instruction is executed.
Delay accessing them for at least one cycle.
Read-only
Network Communications
Completion Code Storage
Address A216 to
A217 The completion code for a communications instruction is
automatically stored at the address with the I/O memory
address given in these words.
Place this address into an index register and use indirect
addressing through the index register to read the com-
munications completion code. Read-only
Used Communications Port
Numbers A218 Stores the communications port numbers used when a
communications instruction is executed using automatic
communication port allocations.
0000 to 0007 hex: Communications port 0 to 7 Read-only