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VSM-4x4HFS - The VSM-4x4HFS RS-232 Communication Protocol
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Query sign
'?' follows some commands to define a query request.
Message closing character
CR
– For host messages; carriage return (ASCII 13)
CRLF
– For machine messages; carriage return (ASCII 13) + line-feed (ASCII 10)
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.
10.1.1.4 Entering Commands
You can directly enter all commands using a terminal with ASCII communications
software, such as HyperTerminal, Hercules, etc. Connect the terminal to the serial
or Ethernet port on the Kramer device. To enter
CR
press the Enter key.
(
LF
is also sent but is ignored by 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.
10.1.1.5 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.
10.1.1.6 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.
10.1.1.7 Maximum String Length
64 characters
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