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1
INTERFACE SPECIFICATIONS
(when optional interface board is installed)
Commands
The received data/transmitted data (RXD/TXD) signal
diagrams below are given from the point of view of the
recorder.
Some commands consist only of a single byte.
The RXD/TXD signal diagrams for single-byte
commands are as shown below.
In the descriptions below, the RXD/TXD signal
diagrams for commands of a single byte other than
return codes have been omitted.
Precaution for RS-485 use
When a group number is set, the command will not
execute if it does not match the group number.
Commands for recorder operation
The commands below are 1-byte commands. The recorder
returns ACK (0AH) for these commands. Confirm that ACK
has been received before sending the next command.
PLAY (3AH)
Starts playback.
STILL (4FH)
If sent during playback, starts still mode.
PLAY/STOP (3FH)
Stops the recorder.
ALARM
(ABH)
If sent during playback of alarm image, playback
skips to the next alarm.
ALARM
(ACH)
If sent during playback of alarm image, playback
skips to the previous alarm.
CHANNEL (8CH)
If sent during playback, displays the channel
selection screen.
If sent while the channel selection screen is
displayed, switches to the all-channel display.
COPY (8DH)
Copies the image to the backup area or Compact
Flash card.
SEARCH (4AH)
If sent while the recorder is stopped, the <SEARCH>
screen is displayed.
English
RXD
TXD
0A
TIMER ON/OFF (60H)
Sets timer recording to "ON" (timer recording
standby) or "OFF" (timer recording canceled).
SECURITY LOCK ON (69H)
Sets the security lock.
REC REQUEST (FAH)
Send this command immediately before sending the
REC (CAH) command.
REC (CAH)
Starts recording.
If sent during single-image recording mode, records
the set number of frames (fields).
Send this command after sending the REC
REQUEST (FAH) command, and confirming that the
recorder has returned the ACK response.
RXD
TXD
Use the STATUS SENSE (D7H) command to check the
state of the recorder.
REC STOP (CFH)
Stops recording.
CHANGE DISK (7DH)
The HDD's power must be turned OFF before it can
be removed. (Removal is not possible with the power
ON.)
83
FA
CA
0A
0A
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