Omron NT20, Руководство пользователя

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171
Overview of Direct Connection Operations Section 5-1
The PT status control area (PLC to PT) can be allocated to the following PLC
areas.
❍
: OK
×
: NG
Since the AR area bits of the CVM1/CV series PLCs are allocated to the sys-
tem, they cannot be used for purposes other than the system use.
The screen switching strobe or numeral setting strobe will turn ON in the fol-
lowing cases.
Screen switching strobe:Turns ON when a screen is changed due to an
instruction from the PLC or an operation at the PT.
Numeral setting strobe: Turns ON when the contents of a numeral memory
table entry is changed due to an operation at the PT.
These strobes turn OFF automatically after the PLC is notified, allowing the
operating status of the PT to be easily investigated. If a CVM1/CV-series CPU
Unit is connected and set for asynchronous operation, the status of the
strobes cannot be read dependably.
Note (1) LR 00000 to LR 00199 are converted to CIO 01000 to CIO 01199.
(2) The EM Area is supported only by the C200HX/HG/HE-(Z)E PLCs.
(3) Make sure there is no duplication in the PT status control area allocations
and PT status notify area allocations.
15 14 13 12 11 10 9 8 Bit
PT status notify bits
0 0 0 0 0
Word m+2
PT operation status (1 (ON): RUN / 0 (OFF): STOP)
Screen switching strobe
Numeral setting strobe flag
Symbol C-series Alloca-
tion
CVM1/CV -series Alloca-
tion
CS/CJ-series Alloca-
tion
None IR Area
❍
CIO Area
❍
CIO Area
❍
H HR Area
❍
--- --- HR Area Not for
Host Link
A AR Area
❍
AR Area
×
AR Area
❍
L LR Area
❍
--- --- LR Area (See note 1.) Not for
Host Link
T TC Area
Timer PVs
×
TC Area
Timer PVs
×
TC Area
Timer PVs
×
TU --- --- --- --- TC area,
Timer Completion Flags
×
C TC Area
Counter PVs
×
TC Area
Counter PVs
×
TC Area
Counter PVs
×
CU --- --- --- --- TC area,
Counter Completion Flags
×
W --- --- --- --- WR Not for
Host Link
TK --- --- --- --- Task Flags
×
D DM Area
❍
DM Area
❍
DM Area
❍
E EM Area
(See note 2.)
❍
EM Area
Current bank Not for
Host Link
EM Area
Current bank Not for
Host Link
E0_to EC_ --- --- --- --- EM Area
EM bank 0 to C Not for
Host Link