B&B Electronics 485T Manual de usuario descargar pdf (Pagina 35)

Owners Manual

2800 Series Marquee

3.2 Escaped Commands

Escaped commands are used to enter message, store message, recall messages, clear messages, and preform

other tasks related message buffers

3.2.1 Text Entry [ESC][text][CTRL-E]

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.

Use the text entry command to place text in the 2800 text entry buffer. If the invisible entry flag is not set, the

specified text is also placed in the immediate message buffer, which is shown on the display if there are no stored

messages recalled for display.

PB-2149-335B Page 31

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B&B Electronics 485T Manual de usuario Pagina 35