Concatenating Serial Commands; Serial Command Status Request; Loss Of Communications - Microscan MS-3000 User Manual

Chapter 3 Serial Configuration
• All fields preceding the modified field must be included. For example, in
the RS-232 port, to change Data Bits to Eight without changing any other
field, enter either: <Ka,,,1> or <Ka4,1,0,1>.
• All fields following the modified field can be left out. For example, in the
RS-232 port, to change Baud Rate to 4800, enter <Ka3>.
(See examples on following pages.)
Initializing serial configuration commands
To ensure that a serial configuration command will take effect, you need
to follow it with one of the operational commands below:
<A> To reset but not save changes for power on
<Z> To reset and save changes for power on
For example, to change Baud Rate and reset without saving changes for
power-up, enter <Ka3><A>.
To change Baud Rate and reset, saving the changes to NOVRAM, enter
<Ka3><Z>.

Concatenating Serial Commands

Commands can also be concatenated (added together) to a maximum of 64
characters in a single string or data block. Additional data blocks of 64 or
less characters can be sent provided there is at least a 10 ms pause
between blocks.
For example, the following command, <Kc1><KA24><Ko1><A> enables LRC,
sets the Host Protocol Response Timeout to 24 ms, enables Narrow Margins and
resets the data buffers (without saving the changes for power-on).

Serial Command Status Request

The status of serial commands can be requested by entering the command
followed by a question mark. For example, enter <Ke?> to request the status
of Postamble. Commands KT?, KV?, KW?, KX?, and KU? are used to
request the status of groups of serial commands (see
2).

Loss of Communications

Assigning a multidrop address to a decoder or making changes to communi-
cations parameters such as Baud Rate, Parity, Stop Bits, LRC, etc. without
corresponding changes in linked device(s) can result in the loss of menu
1. Data in excess of 64 characters will reset the buffer, causing the first 64 characters of the string to be lost and indi-
cator #1 to illuminate red 2 seconds after the end of each read cycle, until the decoder's memory is reset.
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MS-3000 Single Head Decoder User's Manual
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table 3-1 on page 3-