V020-E3-2 Omron, V020-E3-2 Datasheet - Page 213
V020-E3-2
Manufacturer Part Number
V020-E3-2
Description
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Manufacturer
Omron
Datasheet
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5-5-2
Notification of the Operating Status to the PC
Reading the NT20S Operating Statuses
Procedure 1. Use the support tool to allocate the PT status notify area (PT → PC) to the PC
S Screen switch strobe flag (bit 12)
S Numeral setting strobe flag (bit 11)
This section explains how to determine the status of the NT20S, and ascertain its
operating status.
To ascertain the operating status of the NT20S, “PT status” is used.
The NT20S automatically notifies information such as the operating status to the
PT status word of the PT status notify area (PT → PC) allocated to the PC memory
as shown below.
S Restrictions on allocating words
Since all the CVM1/CV-series special auxiliary relays are allocated to the system,
they cannot be used for applications not related to the system.
The range of each memory area differs according to the PC type. See “Appendix L
PC Memory Map” (page 278 of the APPENDIX L) for more details.
2. Write a PC program to read the “PT status” word of the PT status notify area
DM
CH
TIM
CNT
HR
AR
LR
When the screen displayed on the NT20S is switched by a designation from the
PC or by the standalone function, the screen switch strobe flag comes ON (1).
On notification to the PC, it returns to the OFF (0) status.
For details on how the screen switch strobe flag is used, see “Notifying the Dis-
play Screen to the PC” (page 160).
When numerical data is input to a numeral memory table using the NT20S nu-
meral setting function, the numeral setting strobe flag comes ON (1). On notifi-
cation to the PC, it returns to the OFF (0) status.
For details on how the numeral setting strobe flag is used, see “Notification of
Numbers to the PC” (page 188).
Notification of operation mode:
Notification of screen switching:
Notification of numerical data upgrade:
The PT status notify area (PT → PC) can be allocated to the PC memory areas
listed in the following table.
Symbol
memory.
and check each bit status.
Data Memory
Internal/Special Relay
Timer
Counter
Holding Relay
Auxiliary Relay
Link Relay
C Series PCs
Allocated
f
f
×
×
f
f
f
PT operating status
Screen switch strobe flag
Numeral setting strobe flag
Data Memory
Internal/Special Relay
Timer
Counter
Auxiliary Relay
--
--
CVM1/CV Series PCs
f: OK
Section 5-5
Allocated
×: NG
f
f
×
×
×
197
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