4 entering commands, 5 bidirectional definition, 6 command forms – Kramer Electronics VS-21HDCP-IR User Manual
Page 18: 7 command chaining, Entering commands, Bidirectional definition, Command forms, Command chaining

VS-21HDCP-IR - Protocol 3000 Syntax
15
Command chain separator character
When a message string contains more than one command, a pipe ( '|' ) character
separates each command.
Spaces between parameters or command terms are ignored.
8.4
Entering Commands
You can directly enter all commands using a terminal with ASCII communication
software, such as HyperTerminal, Hercules, etc. Connect the terminal to the serial,
Ethernet, or USB port on the Kramer device. To enter CR , press the Enter key.
( LF is also sent but is ignored by the command parser).
For commands sent from some non-Kramer controllers like Crestron, some
characters require special coding (such as, /X##). Refer to the controller manual.
8.5
Bidirectional Definition
All commands are bidirectional. That is, if the device receives the code, it will
perform the instruction; and if the instruction is performed (due to a keystroke
operation on the front panel or IR controller), then these codes are sent to the PC
or other RS-232 / Ethernet / USB controller.
8.6
Command Forms
Some commands have short name syntax in addition to long name syntax to allow
faster typing. The response is always in long syntax.
8.7
Command Chaining
Multiple commands can be chained in the same string. Each command is
delimited by a pipe character ( '|' ). When chaining commands, enter the message
starting character and the message closing character only once, at the beginning
of the string and at the end.
Commands in the string do not execute until the closing character is entered.
A separate response is sent for every command in the chain.