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1 protocol 3000 syntax, 2 command parts details, Protocol 3000 syntax – Kramer Electronics VP-16x18AK User Manual

Page 48: Command parts details, Host message format, Device long response ( echoing command )

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KRAMER: SIMPLE CREATIVE TECHNOLOGY

Kramer Protocol

44

16.2.1 Protocol 3000 Syntax

Host message format:

Start Address (optional)

Body

Delimiter

#

device_id@

message

CR

Simple command (commands string with only one command without
addressing):

start

body

delimiter

#

Command SP Parameter_1,Parameter_2,…

CR

Commands string (formal syntax with commands concatenation and
addressing):

# 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

~

device_id@

message

CR LF

Device long response (Echoing command):

Start

Address (optional)

Body

Delimiter

~

device_id@

command

SP

[

param1 ,param2

]

result

CR

LF

CR = Carriage return (ASCII 13 = 0x0D)

LF = Line feed (ASCII 10 = 0x0A)

SP = Space (ASCII 32 = 0x20)

16.2.2 Command Parts 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 than one command separated by pipe ("|") char.


Message starting char:
'#' for host command\query.
'~' for machine response.

Device ID (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.