Biamp A4 User Manual download pdf (Page 145)

Component Objects

Command String

Command String blocks allow RS-232 control of

external devices via NEXIA's Serial 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 NEXIA 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.

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Biamp A4 User Manual Page 145