TM8100/TM8200 Computer-Controlled Data Interface (CCDI) Protocol Manual CCDI 49
© Tait Electronics Limited April 2007
Control heads with
1-, 2- or 3-digit
display
If the QUERY_DISPLAY command is applied on a radio with a 1-, 2- or
3-digit display control head, a response message with the current text for
each line is returned including a preceding Start of display response message
and a trailing End of display message response. A flashing display is treated
as it was not flashing.
Control heads
without display
If the QUERY_DISPLAY command is applied on a radio with a control
head without display, then only two progress messages are returned:
■ Start of the query display response
■ End of the query display response.
Radios with
multiple control
heads
If the QUERY_DISPLAY command is applied on a radio with multiple
control heads, then only the display content of the master control head is
reported with response messages.
Limitations The QUERY DISPLAY RESPONSE messages should represent a sequence
of text and Icon data, which are used during a complete display refresh
process. There is no absolute guaranty that the reported displayed items are
actually visible on the screen.
Embedded control characters in text strings on the display (i.e. ascii value
less than 0x20) may interfere with the terminal attached to the CCDI port
when a QUERY DISPLAY RESPONSE message is returned.
The CCDI port on the radio must not be configured for software
handshake!
Examples d0100B This message indicates the start of a display response message.
d02F0C4 This message indicates the end of a display response message
(no error).
d0E107803E005Menu85
This message indicates that there is currently a string “Menu”
displayed on the radio, positioned at x=078h, y=03Eh and font
ID=005h (FontDispatch Monospace Numeric 16).
d0C200800B00744BE
This message indicates that there is currently an icon displayed
on the radio, positioned at x=008h, y=00Bh, fontID=007h,
icon ID=44h.
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