Omron NT620C, Руководство по эксплуатации

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5-1 Section Outline of Host Link/NT Link Operation
190
As the number of the numeral table is written, the PT status numeral or charac-
ter-string setting strobe flag is simultaneously set ON (1). After this is notified to
the PC, this flag reverts to OFF (0). Checking the status of this flag will provide
a simple method of checking if a number or character-string has been input
from the NT620S/620C.
S
PT status notify bits (refer to page 240)
The NT620S/620C operation status and other information are written with the
ON or OFF of the bits as shown below.
Controlled item 1 (ON) 0 (OFF)
PT operation
status
Run Stop
Battery Low Normal
Screen switching strobe
Numeral setting strobe flag
Character-string setting strobe flag
Printer operat-
ing status
Printing Stopped
The PT status control area (PC to PT) can be allocated to the following PC areas.
Symbol C Series PCs Allocated CVM1/CV Series PCs Allocated
DM Data Memory
f
Data Memory
f
CH Internal/Special Relay
f
Internal/Special Relay
f
TIM Timer Timer
CNT Counter Counter
HR Holding Relay
f
–
AR Auxiliary Relay
f
Auxiliary Relay
LR Link Relay
f
–
f
: OK : NG
Since the special auxiliary relays of the CVM1/CV series PCs are allocated to the
system, they cannot be used for purposes other than the system use.
The range of respective areas varies with the type of PC. Refer to Appendix L
“PC Memory Map” (page 327).
The screen switching strobe, numeral setting strobe flag, and character-string
setting strobe flag turn ON (i.e., change to 1) in the following cases:
Screen switching strobe: Turns ON when the screen is changed by a command
from the PC or an operation at the NT620S/NT620C.
Numeral setting strobe flag: Turns ON when the contents of a numeral memory
table are changed by an operation at the NT620S/NT620C.
Character-string setting strobe flag: Turns ON when the contents of a character-
string memory table are changed by an operation at the NT620S/NT620C.
These strobes all automatically turn OFF (i.e., return to 0), after notification is
made to the PC. The operations being performed at the NT620S/NT620C can
easily be ascertained by checking for the rising edge of these strobes.