Panasonic DVCPRO AJ-D250P - Manual (Page 40)

40
RS-232C
2) If there were errors in the data or any problems
in the VTR, a description of the reason why the
data was not received is returned in the following
format.
[STX] E R 0 0 ) [ETX]
02H 45H 52H 30H 30H XX 03H
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Contents of )
1 (31H): A command which is not supported or a
command execution error
2 (32H): Erroneous parameter with the wrong
data code
3 (33H): Receive buffer overflow error
[STX] E R 1 0 ) [ETX]
02H 45H 52H 31H 30H XX 03H
O
Contents of )
2 (32H): Front loading error
3 (33H): Loading error
4 (34H): Drum capstan system error
5 (35H): Reel system error
6 (36H): Tension system error
7 (37H): Fan motor error
8 (38H): Dew error
[STX] E R 1 2 ) [ETX]
02H 45H 52H 31H 32H XX 03H
O
Contents of )
0 (30H): Search error (start/end)
1 (31H): Search error (search aborted by front
panel operation)
2 (32H): Search error (no target position)
3 (33H): Search error (search aborted by
command)
[STX] E R 1 F F [ETX]
02H 45H 52H 31H 46H 46H 03H
System (servo communication) error
(3) Receiving format (VTR computer)
The VTR responds to a send command with the
format data below.
1. First, the VTR returns the data indicating
whether the command from the computer was
received properly.
1) If the communication was error-free, the VTR
returns the ACK (Acknowledge) data.
[ACK]
06H
2) If there was a problem in communication, the
VTR returns the data starting with NAK (Negative
Acknowledge).
If the VTR was in the process of sending the
data when the computer sent its command, the
VTR returns NAK after it completes the sending
of the data.
The VTR now destroys all the received data with
errors.
[NAK] )
15H (XX)
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1 (31H): Parity Error
3 (33H): Framing Error
4 (34H): Over Run Error
2. Next, after ACK is returned when the
communication was error-free, the data is
returned in the following format by the
operation of the VTR.
1) The format of the response (return) data in cases
where commands from the computer were
properly received by the VTR is as follows.
[STX] [data] [ETX]
02H XX.....XX 03H
example:
Send command
Return data = Receive data
[STX] QOP [ETX] [ACK] [STX] OEJ [ETX]
[STX] QCD [ETX] [ACK] [STX] CD )))))))))) [ETX]
<Note>
Check the operation carefully before use when
controlling the VTR from a personal computer, etc.
It is recommended to monitor VTR status information
while controlling the VTR in this way.