FDX-08 Command Guide
16
4 Command
4.1 Summary
4.1.1 Regular command
A command consists of “@” (“40” in hexadecimal), 3 one-byte alphabetical characters (upper and lower
cases) followed by parameters (one-byte numbers). For some commands, multiple parameter values can be
specified or parameters are not necessary. Processing is executed by sending a delimiter at the end of the
command.
Example: @SPM,2
“,”(a comma, “2C” in hex) is indicated between a command and parameter and between two parameters.
“
” is indicated as a delimiter CR LF (line feed, “0D” and “0A” in hex).
An error response is returned if an undefined command or inappropriate parameter is included.
Example: @SSW,1
@ERR,1
If only a delimiter is sent, a list of help commands is returned.
Example:
- HELP (1/8) - (CHANNEL SELECT Command)
@IOS : Input/Output Select
@GVA : Getting Cross Point Video and Audio
@IOV : Input/Output Video Select
@GCP : Getting Cross Point Video
@IOA : Input/Output Audio Select
