Command Reference; Data Format; Vcr Control Commands - Sony SVT-RS100 Manual De Instrucciones

Command Reference

Data format

RS-232C
Mode
Character length
Baud rate
Parity check
Stop bit
Communication protocol
The communication is based on 1 byte unit. When the
computer has transmitted 1 byte, it will wait for a
response from the VCR, then send the next.
The response from the VCR consists of 1 byte or more
(for example 6 bytes like the counter value).
RS-485
Mode
Character length
Baud rate
Parity check
Start bit
Stop bit
Transmission line: 2 conductors
Transmission system: Half duplex
Note
The commands depend on the VCR which you are going to
use. Even if you send the commands which are not provided
with your VCR, they do not function.
The received/transmitted (RXD/TXD) signal layout is
indicated as seen from the VCR side.
Note on using the RS-232C
To initiate command operation, send TL TABLE ON
(F6H).
The VCR will responde with ACK (0AH).
The VCR will receive commands until you send TL
TABLE OFF (F7H) to end command operations.
8
Asynchronous
8 bits
2400, 4800, 9600 or 19200
None
1 bit
Asynchronous
8 bits
2400, 4800, 9600 or 19200
None
1 bit
1 bit
Note on using the RS-485
If the address set in the transmission setting mode is
not correct, the VCR will not operate.
When a group number is set, if it does not match the
group number of the VCR, the VCR will not operate.

VCR Control Commands

The following commands are completed in 1 byte.
The VCR will respond with ACK (0AH). Confirm that
ACK (0AH) is returned before sending the next
command.
POWER ON/OFF (7BH)
Turns on or off the VCR.
PLAY (3AH)
Plays back a tape.
STILL/PAUSE (4FH)
Pauses a tape.
When this command is sent while recording, the VCR
enters recording pause mode
STOP (3FH)
Stops a tape.
FF (ABH)
Fast forwards a tape.
When this command is sent while playing, the VCR
enters playback in fast-forward mode.
During pause, the VCR plays back still picture.
During alarm search/scan or date/time search, the VCR
switches to forward search/scan.
REW (ACH)
Rewinds a tape.
When this command is sent while playing, the VCR
enters playback in reverse.
During pause, the VCR plays back a still picture in
reverse.
During alarm search/scan or date/time search, the VCR
switches to reverse search/scan.