FDX-16 Command Guide
15
2.3 Command
2.3.1 Regular command
A command consists of “@” (“40” in hex), 3 one-byte alphabetical characters (upper and lower cases), and
parameters (one-byte numbers). For some commands, several parameters can be specified or no parameter
is required. Processing is executed by sending a delimiter at the end of the command.
Example: @SPM,2
“,”( a comma, “2C” in hex) is used between a command and parameter and between two parameters.
: delimiter CR LF (line feed,
“0D” and “0A” in hex)
An error command is returned if an undefined command or wrong 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 : Get Cross Point Video and Audio
@IOV : Input/Output Video Select
@GCP : Get Cross Point Video
@IOA : Input/Output Audio Select