Ring Communications DNA200 - Manual (Page 22)

DNA200 OPERATIONS MANUAL 22 2008/05/01
AUTOPATCH
PROTOCOL
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).
MESSAGE FORMAT
The message format is in the following for output messages from the DNA200 (ASCII):
CInnnnOmmmmT
C Change Command
I Input
nnnn Camera Address (1-4 numbers)
O Output
mmmm Monitor Address (1-4 numbers)
T
Execute Command
X Cancel Command
Message format from AutoPatch:
Echo of all charcters received.
The DNA200 will wait for the echo T before sending more commands.
If the T is not recived within 2.5 seconds the command is aborted and ASCII X is sent to the switcher.