Owners Manual
2800 Series Marquee
2.3 Interpreting Command Diagrams in this Manual
Throughout the rest of this manual, we will be presenting commands you can send to 2800 series marquees to
make them perform various actions. With each command description, we will also provide a command diagram
similar to the one shown below.
Text Entry Command:
Address Header Entry
Start
Message Text Literal Entry
End
CTRL-B A ESC H e l l o SPACE W o r l d CTRL-E
02h 41h 1Bh 48h 65h 6Ch 6Ch 6Fh 20h 57h 6Fh 72h 6Ch 64h 05h
• Address Header – directs the command to the specified marquee. To send the command to a different
marquee, change the second character of the address header to the address of the marquee you wish to send
the command to. If you have disabled the addressing feature of the marquee, do not send the address header
section.
• Entry Start – puts the 2800 into message entry mode, which is used to store a message in the text entry
buffer.
• Message Text Literal – literally the message to store in the text entry buffer, which has a maximum capacity
of 250 characters. While in entry mode, the 2800 processes [Backspace] characters as expected, removing
text from the text entry buffer. Be careful to avoid sending carriage return, line feed or other control characters
in the message text literal section. Typically the marquee will ignore them, but they do get stored in the text
entry buffer, and get copied to other buffers if the marquee receives commands to do so.
• Entry End – ends message entry mode. If the invisible entry flag is set, then the flag is cleared and the text
entry buffer is not copied to the immediate message buffer. However if the invisible entry flag is not set, then
the contents of the text entry buffer is copied to the immediate message buffer. The marquee will display the
contents of the immediate message buffer, if there are no stored messages recalled for display.
The above diagram indicates that the text entry command is composed of four major sections: address header;
entry start; message text literal; and entry end. Each section is composed of one or more characters. The
example address header section shown above is composed of two characters. The first character is a
[Control-B] character, and the second is an [A] character. The hexadecimal ASCII code numbers for
each character is shown on the last row of the diagram. This diagram indicates that the hexadecimal ASCII code
number for a [Control-B] character is 02h and the hexadecimal ASCII code number for an [A] character is
41h.
Every command diagram shown in this manual has an address header section. The address header is used to
direct the command to a specific marquee, [A] in the above diagram. If you wish to send this command to a
marquee with a different address, replace the [A] character with the address of the marquee you are sending the
command to. For example, if you wish to send the command to a 2800 marquee that is assigned an address of
[C], send the address header sequence [Control-B][C], instead of the sequence [Control-B][A] shown
in the diagram.
The 2800 addressing feature can be disabled. When sending commands to a 2800 with the addressing feature
disabled, do not send the address header section of the command. To send the above example command to a
2800 with the addressing feature disabled, skip the address header section and only send the entry start,
message text literal, and entry end sections.
PB-2149-335B Page 15
(12 Seiten)
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