Nt11 Status Control; Controllable Nt11 Functions - Omron NT11 - 01-2004 User Manual

NT11 Status Control

5-5

NT11 Status Control

5-5-1

Controllable NT11 Functions

PT status control bits
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit
Word
n+3
The statuses of the NT11 can be controlled from the PLC by writing control
data to the "PT status control bits" of the PT status control area allocated in
the PLC memory.
Screen off
["PT status control bits" of the PT status control area]
0 0 0 0 0
The NT11 functions that can be controlled from the PLC are listed below:
Whether the screen is displayed or not
Whether display histories are printed or not
Whether daily reports are printed or not
Note Since the PT status control bits remain unaffected even if the NT11 status
changes in accordance with the screen attribute and memory switch settings,
it can happen that the status indicated by the PT status control bits does not
agree with the actual status of the NT11. For example, the screen may be off
although the screen display setting is "ON". In situations like this, control the
NT11 by using the PT status control bits.
• Screen display (bit 15)
The screen display bit determines whether the backlight is lit or unlit
(whether the screen is displayed or not). It is used to prolong the service
life of the backlight and prevent the formation of an afterimage. When bit
15 is set to OFF (0), the backlight is switched off.
Once the screen has been switched off, it can be switched back on either
by switching bit 15 ON (setting it to "1") or by pressing an NT11 key; this
will cause the backlight to come back on.
NT11
0 0 0 0 0
PLC
PT status control area
Screen switch setting
Copy memory
table setting
PT status control
bits
PT status control
0 0 0
designations
Control details 1 (ON)
Screen display (Note) YES
Print display history YES
Print daily report YES
Note: When "screen display = yes" is set, the
backlight is lit; when "screen display =
no" is set, the backlight is off.
Section 5-5
Control data
0 (OFF)
NO
NO
NO
129