Ring Communications DNA200 - Manual (Page 21)

DNA200 OPERATIONS MANUAL 21 2008/05/01
PANASONIC
PROTOCOL
WJ-SX550A
This video switcher interface is used for systems with multiple Monitors and multiple Cameras.
The Network Address of the DNA200 is programmed for each Masterstation/DAD104 using a video monitor. This
programming is done in the DXC901 or DXC910. No configuration is required for the sub stations with camera in
the DXC901/DXC910.
The monitor address and camera address for each call number is programmed in the DNA200 (see Configura-
tion).
COMMUNICATION PROTOCOL
The device receiving from the DNA200 is setup in the following matter:
The interface is using RS232 between the baud rates of 1200-19200 bps (see S ETTING B AUD R ATE /D EVICE
T
YPE
S
ELECT
earlier in this chapter).
Data bits, stop bits and parity is programmable (see Configuration),
Hardware flow control (RTS/CTS).
Software flow control (X-ON/X-OFF).
MESSAGE FORMAT
The message format is in the following for output messages from the DNA200:
<STX>CMD:Wi-p<ETX>
<STX>CMD:H###CS####<ETX>
<STX>CMD:HLG<ETX>
<STX> Start of text (hex 02)
CMD:W Login command (see page 140)
CMD:HLG Logout comman
CMD:H Monitor select command
i = user number
p = password
CS
Camera select command
### Monitor address 1-3 digit numeric
#### Camera address 1-4 digit numeric
<ETX> End of text (hex 03)
Message format from Panasonic:
<ACK> Message accepted (hex 06 = ctrlF)
<NAK><1>
Parity error
<NAK><2> Data overflow
<NAK><3> Framing error
<NAK><4> Overrun error