Panelplayer User Manual v.1.4
Page 37
9.7 When the Master delivers a command to Panelplayer
(Master > Panelplayer)
a)
The data area
A
indicates the transmission of data from the master to Panelplayer.
b)
The data area
B
indicates the transmission of data from Panelplayer to the master.
c)
The programme of the master is structured so as to manage the data in the manner
shown on the figure from left to right. Therefore, the data management sequence is
A
,
B
.
Example :
In area
A,
the character
ENQ
(05
H
) is transmitted, followed by all the other data
indicated as "
Data
" in the figure to the right of the character
ENQ.
9.8 Basic format of the dedicated protocols
Panelplayer manages up to four dedicated protocols.
The definition of which of these four protocols must be used by the serial connection, is set
in the configuration file
config.txt.
(par. 9.2).
The difference among these four formats is due to the presence or absence of CheckSum
and/or of the characters
CR
(
C
arriage
R
eturn, character
0D
H
) and
LF
(
L
ine
F
eed,
character
0A
H
).
9.9 Basic set-up of the data transmission
IMPORTANT
:
the introduction of
CheckSum
at the end of the block of data and
characters of
CR
+
LF
is defined in the configuration file (par. 9.2).
E
N
Q
Data
A
C
K
Data
Master
Panelplay
A
B
Control code
Panelplayer address
Command code
Command data
CheckSum
CR/LF control codes
