Biamp A4 - Manual (Page 153)

Component Objects
Command String blocks allow serial control of
external devices via the
Serial Control Port .
Control input nodes along the top of the block
produce corresponding serial commands, when
triggered by control output nodes on other
components within the design. Commands can
also be initiated using the command button which
appears within the control dialog box. Command
ID
allows the command/button to be named.
Command String allows the appropriate
character string to be entered. Update sends the
character string to be stored in Audia device
memory.
Unlike most other blocks, multiple control output nodes may be connected
to a single control input node on a Command String block. Control Dialog
Boxes for Command String components can be minimized to create user
control surfaces (see
Customizing Component Objects ).
NOTE: Some command strings may need to output nonprintable characters. The strings
themselves must be printable, so this is done by including three-character sequences in the
command string. The first will be a tilde, the second and third hex digits. To include a carriage
return and line feed pair, for example, in the string, include the text ~0d~0a (either case may be
used). A tilde may only be included by using the sequence ~7E (or ~7e) for the tilde character
itself.
Event Scheduler
When an Event Scheduler block is placed into the Layout
from the
Object Toolbar , an Initialization Properties dialog
box appears for selecting the desired number of events (up to
8)
. This determines the quantity of input/output control nodes
on the block as well.
Event Scheduler blocks allow timed triggering of internal or external events.
Control output nodes along the bottom of the block produce a high pulse
(250mS) whenever a scheduled event occurs. Control input nodes along the
top of the block allow the corresponding output nodes (scheduled events) to
be disabled.
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