40
Return Data (without Checksum byte)
10h 01h:ACK
When a command from the CONTROLLER is received normally, the DEVICE returns this
command as acknowledgment.
11h 12h:NAK
When a communication error is detected or an undefined COMMAND is received, the
DEVICE returns this command as not-acknowledgment.
BIT-7 to BIT-0 of DATA-1 will be set in accordance with the contents.
[DATA-1]
BIT-7 BIT-6 BIT-5 BIT-4 BIT-3 BIT-2
BIT-1
BIT-0
TIME
OUT
FRAMING
ERROR
OVERRUN
ERROR
PARITY
ERROR
CHECKSUM
ERROR
SOFTWARE
OVERRUN
UNDEFINED
COMMAND
12h 11h : DEVICE TYTPE
The “00h 11h : DEVICE TYPE REQUEST” command is used for asking the specifications
of the DN-500 used as DEVICE. When the DEVICE receives this command, it attaches
2-bytes specification data to “12h 11h : DEVICE TYPE” and sends the information to the
CONTROLLER.
NTSC : 12h 11h 20h 41h
PAL : 12h 11h 21h 41h
Status Return Data
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Data 0
Busy
Local
Enable
Data
1
Standby
On
Stop
Rewind
Fast
Forward
Record Play
Data
2
Shuttle
Tape
Reverse
Still
Data 6
Lamp Still
Lamp
Forward
Lamp
Reverse
RS 422 Version History
V0.1 Initial. 06-20-2007
V0.2 Status Return Table 09-25-2007
V0.3 Detailed Description of Commands
V0.4 Change command format description
V0.5 Add new command. 05-23-2008
DN-500 Firmware Version
MB: 1.2.21 FP: 1.3.2
Latest version at time of print
1.DV 16:9 flag
For assistance with updating the firmware on your unit please see the
Service and Support
page and
contact your local Datavideo office.
