
2.DEVELOPMENT OF CUSTOM SCREEN B-66284EN/01
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2.3.17
Composite Message Indication Control
This control reads the text (character string) corresponding to the text
number specified with a specified PMC area from F-ROM and
indicates it.
As the message indication interface, a number interface and bit
interface are supplied.
For the number interface, a single message can be displayed by
combining up to six phrases. For the bit interface, only a single phrase
can be displayed. Up to 32 messages can be displayed, with each
connected-phrase or mono-phrase message being assumed as one.
A function is provided which adds a connect word to each
connected-phrase or mono-phrase message. As a connect word, a date
and time can be selected.
Messages can be displayed on the display in two ways:
• List messages in a rectangular display area, one in each line.
• Run a telop of messages from right to left.
Number Interface Specification
Structure of phrases and specifying an PMC area
In the following example, two bytes are secured for all phrases (up to
six phrases) in the number specification area for a single message, and
consecutive 12 bytes, D200 to D211, are used.
Example
D200:
Phrase
number 1
Phrase
number 2
Phrase
number 3
Phrase
number 4
Phrase
number 5
Phrase
number 6
Either one or two bytes can be selected as the size of a single phrase
number specification area.
If one byte is selected, the PMC area requires less space; however,
only phrase numbers 1 to 255 in the message text file can be specified.
The numbers specified in the PMC must be the ones that correspond
to the messages registered in the message text files specified for the
individual phrases.
As many message specification areas, such as that shown in the above
example, as the specified number of messages are reserved
consecutively as an array in the PMC area. The following shows an
example of reserving the areas to display three 5-phrase messages.
x → 0 2 4 6 8
D20x: For message 1
Phrase
number 1
Phrase
number 2
Phrase
number 3
Phrase
number 4
Phrase
number 5
D21x: For message 2
Phrase
number 1
Phrase
number 2
Phrase
number 3
Phrase
number 4
Phrase
number 5
D22x: For message 3
Phrase
number 1
Phrase
number 2
Phrase
number 3
Phrase
number 4
Phrase
number 5
Up to 32 messages can be displayed.
A 1-bit read enable signal is required for each message.
The following shows an example of reserving read enable signals in a
2-byte area to display 11 messages.
Placement of read enable signals
#7 #6 #5 #4 #3 #2 #1 #0
R200 Message 8 Message 7 Message 6 Message 5 Message 4 Message 3 Message 2 Message 1
R201 Message 11 Message 10 Message 9