V020-E3-2 Omron, V020-E3-2 Datasheet - Page 212

• Manufacturer Part Number: V020-E3-2
• Description: Publications, Books
• Manufacturer: Omron

Specifications of V020-E3-2

• Lead Free Status / RoHS Status: na

5-5
5-5-1
196
Notification of the Operating Status to the PC
Notification of the Operating Status to the PC
(Determining the NT20S Operating Status)
Ascertainable NT20S Statuses (Notified Operating Statuses)
Caution:
Caution:
Word
m+2
The status (operating statuses, etc.) of the NT20S can be determined from the PC
by reading the “PT status” word in the PT status notify area allocated in the PC
memory.
[“PT status notification bits” of the PT status notify area]
Make the settings so that the PT control area and PT status notify area do not over-
lap.
S PT operating status (bit 15)
To ensure system safety, be sure to periodically read the PT operating status bit
from the host in order to ensure that the PT is always operating normally.
15 14 13 12 11 10 9
PT status notification bits
15
When the NT20S is in the RUN mode this bit is set to ON (1). In other modes and
while the system menu is displayed it is OFF (0). When this bit is OFF allocated
bits and words cannot be read or written to.
During the run mode, ON (1) is periodically written into this bit. In order to check
whether the NT20S is operating normally or not, write OFF (0) to this bit: if it is
ON (1) 30 seconds later the NT20S is running, and if it is OFF (0), the NT20S is
stopped.
PT stopped
14
0
13
0
NT20S
12
8
11
7
6
10
0
0
5
Screen
number
9
0
4
3
8
0
2
0
1
Bit
PT status notify area
Content upgrade memory table
0 Bit
PC
Currently displayed screen
PT status
PT operating status
(1(ON) = operating / 0 (OFF) = stopped)
Screen switch strobe flag
Numeral setting strobe flag
PT status
Section 5-5