38 Pelco Manual C573M-D (11/03)The following sections provide additional information about functions that can be performed
from the Message Text Editing dialog box.
Showing Commands: You can display command transactions between the PC and the
MDA by selecting the Show Commands checkbox in the Message Text Editing dialog box.
The Command Data window displays the command sent to the MDA and the response sent
from the MDA each time you click a command button in the Message Text Editing dialog
box. The command transaction is displayed in hexadecimal format and in ASCII format.
Figure 34 provides a sample of a Command Data window. The message
Hello World
was
sent from the PC to the MDA using the Send Row 1 command button.
Figure 34. Sample Command Data Window
Note the following:
• The ASCII equivalent of hexadecimal data 00 to 1F and hexadecimal data 80 and
beyond is represented as dots.
•When the MDA acknowledges the command that was sent to it, the MDA responds by
sending
A2
as shown in Figure 34. If the MDA does not acknowledge the command
that was sent to it, the MDA responds by sending
AA
.
For additional information about message text commands, refer to
Appendix C
in this
manual.
Scrolling Message Text: If you have set message text on a selected unit and channel for
a specified number of rows, the MDA allows you to scroll message text to allow a new
message to be displayed.
To scroll message text, do the following:
1. In the Rows to Display formatting list box, specify the number of text rows that can be
scrolled and displayed.
2. Send the formatting to the selected unit and channel(s) by clicking the Send Current
Formatting button.
3. In the Scroll Text entry box, enter the desired message text and then click the Scroll
Text button.
Message text scrolls as follows. Each row that is scrolled moves upward one row. As a
result, the first row of message text is overwritten. The new message is displayed in the
bottom row, which is determined by the number of rows specified in the Rows to Display
formatting setting.