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3-12
Section
Enabling/Disabling PT Operations
356
Controlling the Enabling/Disabling of PT Side Operation by Operation at the PT
Status Control Area
Use this method to enable and disable PT operations from the host. PT opera-
tions that can be controlled include opening windows, inputting numeric values
and character strings, and switching screens.
The PT status control area must be allocated to a word in the host, accordingly,
no special settings are required for reading the operation at the PT.
Bits used to control the PT status (PT status control bits) are provided at the
fourth word (word n + 3) from the beginning in the PT status control area.
•
Bit 6: Enabling/disabling the PT side window opening
•
Bit 5: Enabling/disabling the inputting of numeric values and character strings
•
Bit 4: Enabling/disabling the PT side screen switching
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit
0
0
Controlled Item
Screen display
Processing priority registration (for NT link (1:N))
Continuous buzzer
Intermittent buzzer (short)
Display history initialization
Not used
Intermittent buzzer (long)
Backlight mode
Screen printing
PT window opening
Numeral/character string input
PT screen switching
Memory table copy execution
Memory table copy type
Alarm history initialization
Not used
1 (ON)
Performed
Registered
Sounded
Sounded
Performed
Sounded
Lit
Performed
Disabled
Disabled
Disabled
Performed
Numeral
Performed
0 (OFF)
Not performed
Canceled
Stopped
Stopped
Not performed
Stopped
Flashing
Not performed
Enabled
Enabled
Enabled
Not performed
Character string
Not performed
Always 0
Always 0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bits 2 and 3 are not used when the PT is in NT30/620
compatible mode.
To control the operation by the PT while it is running, operate the PT status con-
trol area in the manner shown below.
Change the setting of the bits in the fourth word (word n + 3) from the beginning in
the PT status control area as indicated below according to the required control.
word n + 3
•
Bit 6:
To control the PT side window opening
•
Bit 5:
To control the inputting of numeric values and character strings
•
Bit 4:
To control PT side screen switching
To disable operation:
1 (ON)
To enable operation:
0 (OFF)
Setting
Operation
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Summary of Contents for NT21 Series
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