Notification Of The Operating Status To The Plc (Determining The Nt11 Operating Status); Ascertainable Nt11 Statuses (Notified Operating Statuses) - Omron NT11 - 01-2004 User Manual

Notification of the Operating Status to the PLC (Determining the NT11 Operating Status)

5-6 Notification of the Operating Status to the PLC
(Determining the NT11 Operating Status)
5-6-1

Ascertainable NT11 Statuses (Notified Operating Statuses)

132
2. When CIO/IR 00111 comes ON, the daily report printing bit (bit 4) of the
PT status control area is set to "0". The status of bits other than bit 4 re-
mains unchanged.
The status (operating statuses, etc.) of the NT11 can be determined from the
PLC by reading the "PT status" word in the PT status notify area allocated in
the PLC memory.
NT11
PT stopped
["PT status notification bits" of the PT status notify area]
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit
Word
PT status notification bits
m+2
PT status notification bits
15 14 13 12 11 10 9 8 Bit
0 0
m+2
The following are the NT11 statuses that can be notified to the PLC:
RUN/STOP status of the NT11
Screen switching events
Numeral input events
Input of incorrect passwords
• PT operation status (bit 15)
When the NT11 is in the RUN mode this bit is ON ("1"). In other modes,
and when the system menu is displayed, it is OFF ("0"). When it is OFF
("0"), the allocated bits and words cannot be read or written to.
• Screen switching strobe (bit 12)
When the screen displayed by the NT11 is switched by an instruction from
the PLC, or by the standalone function, the screen switching strobe comes
ON ("1"). On notification to the PLC, it goes OFF ("0").
• Numeral setting strobe flag (bit 11)
When a numerical value has been set in a numeral memory table entry us-
ing the numeral setting function of the NT11, the numeral setting strobe
flag is ON ("1"). On notification to the PLC, it goes OFF ("0").
PLC
PT status notify area
Currently displayed screen
Content upgrade memory table
Screen
PT status
number
PT status
0 0
0 0
PT operating status
(1(ON): RUN/0 (OFF): STOP)
Screen switching strobe
Numeral setting strobe flag
Password input error flag
Section 5-6