Areas For Control/Notification; Pt Status Control Area (Host ↔ Pt) - Omron NT631 Series Reference Manual

Areas for Control/Notification

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Areas for Control/Notification

2-2-1 PT Status Control Area (Host ↔ PT)
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The following areas are provided for PT control and PT status notification be-
tween the PT and the host.
• PT status control area
This area is used to designate the screen to be displayed at the PT, to copy
data contents between memory tables in the PT, and to control the status of the
backlight and other statuses.
• PT status notify area
This area is used to notify the memory table number to the host when there is a
change in the data contents of a memory table in the PT, and to notify informa-
tion such as changes in the PT status.
• Window control area
This area is used to designate the window screen number or display position
from the host, and to notify these information from PT.
S The PT status control area and PT status notify area must be allocated to the
Reference:
host. Screen data cannot be downloaded from the Support Tool unless they
have been allocated.
S The PT status control area, PT status notify area and window control area must
be set so that they do not overlap.
S When multiple PTs are connected to one PC, the PT status control area, PT
status notify area and window control area of each PT must be set so that they
do not overlap, or the movement of PT will be unstable.
S Allocate window control area to the host only when the window is used and
when the window is controlled from the host. Even if the window control area is
not allocated to the host, a window can be controlled by touch switch operation
etc.
When data is written to this area from the host, the PT reads the data and oper-
ates accordingly. However, note that the number of the currently displayed
screen is written to the screen switch setting word from the PT too.
The PT status control area is configured as five consecutive words as shown
below. The first word (word n) is set in the Control/Notify Area settings in the PT
configuration settings made with the Support Tool.
15 14 13 12 11 10 9
Word
n Screen No. (4-digit BCD or hexadecimal)
Copy source memory table No.
n + 1
(4-digit BCD or hexadecimal)
Copy destination memory table
n + 2
No. (4-digit BCD or hexadecimal)
n + 3 PT status control bits
n + 4 Reserved for system use
Reference: The configuration and functions of the PT status control area are different when
the PT is set to NT30/620 compatible mode. Refer to Appendix C for details on
the NT30/620 compatible mode.
8 7 6 5 4 3 2 1 0
Section
Bit
Screen switch setting
Copy memory table
setting
PT status control
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