Dynapro Technologies Dynapro ET TCS, Application Developer'S Manual

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The Data Bits command selects either seven or eight data bits per ASCII code. The number of
data bits is selected by the user, who sets the Data Bits parameter on the Setup Screen to either 7
or 8.
If the Data Bits parameter is set to 7, the next seven bits (following the start bit) received over
the host serial interface are interpreted as data. All codes sent from the TCS to the host when the
Data Bits is set to 7 use only seven data bits. Start, Stop, and Parity bits frame the Data bits and
ensure the data is received by the host. (See Chapter 2 for more information about data formats.)
Operation with seven data bits allows the host to send codes representing the lower 128
characters (the Standard Character Set). This precludes sending codes which represent the upper
128 characters (the Extended Character Set) from the host and requires the use of the Select
Character Set command to display Extended Characters. (See Chapter 5 for complete information
about the Select Character Set command.)
If the Data Bits parameter is set to 8, the next eight bits following the start bit are interpreted as
data. This allows the host to send codes that represent the entire character set (128 Standard and
128 Extended Characters).
NOTE
Only those characters within the Standard and Extended Character Sets that are represented by graphic
codes can be directly accessed for display. Characters that are represented by control codes are not
directly displayable, as described in Chapter 3.
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Eight (8) data bits
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The user selects the number of data bits by entering the Setup Screen and then setting the Data
Bits parameter to the desired value using touchkeys or the optional keyboard.
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None. (This is a local command only.)