Send And Receive Ascii Commands; Overview; Message Body; Mnemonic - Projectiondesign F1+ Protocol Manual

6

SEND AND RECEIVE ASCII COMMANDS

6.1

Overview

The protocol exists in parallel with the already existing 32/33-byte protocol.
The protocol has the following definition:
<HEADER> [SEPARATOR]
1 byte 1 byte
Field Description
<HEADER> ASCII character ':'
Separator ASCII character 'space'
Address 1-3 bytes address
6.

Message body

The message body structure is as follows:

MNEMONIC

[SEPARATOR]
4 byte 1 byte
Field Description
4 bytes key identifier,
Mnemonic
not case sensitive
Modifer Single char symbol
Values 1-3 bytes address
TERM Termination char 0x0D (CR)
6.3 MNEMONIC
The Mnemonic is 4 bytes key identifier, know as the ASCII command.
Example: POWR, SABS, IVGA
10
ADDRESS [SEPARATOR]
1-3 bytes 1 byte
Comment
Required
Optional
Optional
[MODIFIER] [SEPARATOR] VALUES
1 or 2 bytes 1 byte N bytes
Comment
Required
Optional
Optional
Required
MESSAGE
BODY
N bytes
CR
1 byte