Kramer Electronics VP-81KSi user manual Command Part Details

Kramer Protocol

#Address@ Command_1 Parameter1_1,Parameter1_2,… Command_2 Parameter2_1,Parameter2_2,… Command_3 Parameter3_1,Parameter3_2,… …CR

Device message format:

Start	Address (optional)	Body	Delimiter
~	Sender_id@	message	CR LF

Device long response (Echoing command):

Start	Address (optional)			Body	Delimiter
~	Sender_id@	command		SP [param1 ,param2 …]	CR
						L
			result
						F

CR = Carriage return (ASCII 13 = 0x0D)

LF = Line feed (ASCII 10 = 0x0A)

SP = Space (ASCII 32 = 0x20)

17.2.2 Command Part Details

Command:

Sequence of ASCII letters ('A'-'Z', 'a'-'z' and '-').

Command will separate from parameters with at least single space.

Parameters:

Sequence of Alfa-Numeric ASCII chars ('0'-'9','A'-'Z','a'-'z' and some special chars for specific commands), parameters will be separated by commas.

Message string:

Every command must to be entered as part of message string that begin with message starting char and end with message closing char, note that string can contain more then one command separated by pipe ("") char.

Message starting char:

'#' for host command\query. '~' for machine response.

Device address (Optional, for Knet):

Knet Device ID follow by '@' char.

Query sign = '?', will follow after some commands to define query request.

Message closing char =

Host messages - Carriage Return (ASCII 13), will be referred to by CR in this document.

Machine messages - Carriage Return (ASCII 13) + Line-Feed (ASCII 10), will be referred to by CRLF. Spaces between parameters or command parts will be ignored.

Commands chain separator char:

When message string contains more than one command, commands will be separated by pipe ("").

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