11
6.5
Addressing
The same address mechanisms as for the binary protocol is supported in the ASCII protocol.
6.6
Acknowledge/Response
Acknowledge is optional and ON by default. Auto acknowledge can be turned on and off with ECHO commad. Also turned activated on a per command basis using modifier A.
ACK
ADDRESS
SEP
COMMAND
SEP
VALUE
TERM.
1 byte
3 bytes
1 byte
4 bytes
1 byte
6 bytes
1 byte
Field
Description
Comment
ACK
ASCII character ‘%’
Always
SEP
ASCII space
Always
VALUE
6 bytes return value
Always
TERM
Termination char 0x0D (CR)
Always
6.4 Modifier
R
Relative change. Value given will be relative to the existing value
A
Request an acknowledge. This modifier is the only that might be applied together with another modifier. It can be
used to read back the result of the command.
?
? – current
?M – max
?N – min
6.7 SUPPORTED COMMANDS
Modifiers
A
Request acknowledge
?
Get current value
?M
Get MAX value
?N
Get MIN value
R
Relative set
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