593
Commands/Responses
Section 9-3
Response
[Format]
None
[Function]
S Notifies to the host the fact that there has been a change in the status of the PT
and the contents of the direct areas (PT control area, PT notify area and window
control area) have changed.
However, in the following cases, a dedicated command is issued and therefore
the direct area changing notify command is not issued.
When numeric input has occurred : Numerical input notify
command
When character string input has occurred : Character string input notify
command
For details of direct area, refer to 7-2 “Areas for Control/Notification” in page265.
Example
[Example 1. Notification of change in the PT control area]
Notification of change in the PT control area is issued when screen is switched by
operations at the PT, such as touch switch operation. In the example below, it is
ascertained that the screen has been switched to screen number 21 (BCD) by a
switch screen touch switch.
S Command
0
1B 50
[ESC] P
30 30
0
4D
M1
3130
0
0
30
1
31 0D30
01
31 35
54
34
[CR]
First word number of PT control area : 100CH
Number of changed words in PT control area : 1CH
Screen number (hexadecimal) : 15H (screen No.21 in BCD)
Check sum : 40H
[Example 2. Notification of change in the PT notify area]
Notification of change in the PT notify area is issued when the status of the PT is
changed (such as screen printing). In the example below, it is ascertained that the
printing is being executed currently from the fact that the bit 7 (screen printing) in
the PT notify bit is ON (1).
S Command
0
1B 50
[ESC] P
31 31
1
4D
M1
3130
1
0
30
1
31
30
0
0D
8
43
C8
38 30
0A
41
[CR]
38
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