RI 22
Request Send OOB control signal: Tells DCE prepare accept
data from DTE.G.
DSR 6
Ring Indicator OOB control signal: Tells DTE that DCE has detected a
ring signal the telephone line.
DTR 20
Data Carrier Detect OOB control signal: Tells DTE that DCE connected
to telephone line. Select room music source (Room music MP3)
Length:5
Command:RS_232_ZONE_SOUND_SRC
Data: room 1~8 total rooms
® Music source RS_232_DVD RS_232_AUX3
Checking: N/A
Terminal Feedback: True/False (RS_232_TRUE/RS_232_FALSE)
Data sent below:
Start Code Start Code Length Command Data Source Checking
FF 0D
Stránka 17
.
DCD 8
Data Set Ready OOB control signal: Tells DTE that DCE ready to
receive
commands data. Select music source the zone (zone music MP3)
Length:5
Command:RS_232_ZONE_SOUND_SRC
Data: room 1~8 total rooms
® Music source RS_232_DVD RS_232_AUX3
Checking: N/A
Terminal Feedback: True/False (RS_232_TRUE/RS_232_FALSE)
Data sent below:
Start Code Start Code Length Command Data Source Checking
FF 0D
(Length 05: Length=Data Qty because the Data Qty this signal then final code 5)
(Command: Selected room music, code 01)
(Data: Room code 05)
(02: Music MP3, RS_232_MP3 the related command)
Ukázka kódů:
1. TxD 2
Received Data Data signal: Carries data from DCE DTE.
CTS 5
Transmitted Data Data signal: Carries data from DTE DCE. RxD 3
Common Ground GND common 7
GND common 1
Protokol 232C MRS 1310:
Formát:
0xFF 0x55 Length Command Data Checking
E.Popis 232C:
Název Učel zkratka DTE DCE pin
Data Terminal Ready OOB control signal: Tells DCE that DTE ready be
connected.
RTS 4
Clear Send OOB control signal: Acknowledges RTS and allows
DTE transmit
