JVC SR-L910EK Commands reference chart, 4th byte, Contents of 5th byte BIT 0/1/2/3 Speed Code

10. OPTIONAL SA-K97U RS-232C INTERFACE BOARD
(9)	STATUS SENSE (D7H)		: The VCR will return current status information in 5 bytes.
	1st byte
	BIT		Status when BIT is “1”.
	0	Error	Indicates that an illegal command has been received. No further commands will be accepted.
			To restore to normal operation, transmit CLEAR ERROR (41H) to the VCR.
	1	Not defined	Always 0.
	2	Not defined	Always 0.
	3	Cassette out	The tape has not been loaded.
	4	REC inhibit	A tape with no safety tab has been loaded. In this case, no recording commands
			will be accepted.
	5	Not defined	Always 0.
	6	Not defined	Always 0.
	7	Not defined	Always 1.
	2nd byte
	BIT		Status when BIT is “1”.
	0	Tape End	Tape end sensor is detected.
	1	Tape Begin	Tape begin sensor is detected.
	2	Not defined	Always 0.
	3	Warning	VCR malfunction.*
	4	Not defined	Always 0.
	5	Not defined	Always 0.
	6	A EE Mode	An externally-input audio signal is being output.
	7	V EE Mode	An externally-input video signal is being output.

10. OPTIONAL SA-K97U RS-232C INTERFACE BOARD

2-4 Others (Input data correction/Error cancellation) These are return codes from the SR-L910E/EK. (Error-related codes only)

(1)ERROR (02H) : This is returned when commands of more than 1 byte are transmitted to the VCR and an illegal command is received in the 2nd byte (or later) of the transmitted command.

In this status, no command can be accepted and only STATUS SENSE will be returned. To restore normal operation, transmit CLEAR ERROR (41H) or CLEAR (56H) to the VCR.

CLEAR ERROR (41H)

:

Used to cancel previously-transmitted 1-byte numeric data when inputting

numeric data such as an Index search point. Also used to cancel error status.

CLEAR (56H)

:

Clears the whole command. Cancels the current status and stops the VCR. Also

cancels the error status.

Eg : After setting the recording/playback mode to “L24H”, 32H is mistakenly transmitted . Cancel 32H with

“41H” and input “33H” instead.

TXD

7EH

30H

32H

41H

33H

40H

Time

RXD

0AH

0AH

0AH

0AH

0AH

0AH

(2)

NAK (0BH)

: VCR will return this code when non-defined or non-functional command is received in the 1st byte of the

transmitted command. In this case, it is not necessary to input CLEAR. Check whether the transmitted command

is acceptable to the VCR or not.

3rd byte
BIT		Status when BIT is “1”.
0	Not defined	Always 0.
1	Search Mode	Search is in progress. (VISS)
2	Repeat Mode	Repeat recording/playback is in progress.
3	Not defined	Always 0.
4	Repeat	VCR’s REPEAT REC switch is set to ON.
5	Not defined	Always 0.
6	Timer REC ON	VCR’s TIMER button is set to ON.
7	Not defined	Always 0.
4th byte
BIT		Status when BIT is “1”.
0	Not defined	Always 0.
1	REC Mode	VCR is in the Record mode.
2	Eject	A cassette is being ejected.
3	Not defined	Always 1.
4	Stop Mode	VCR is in the Stop mode.
5	REW Mode	VCR is in the Rewind mode.
6	FF Mode	VCR is in the Fast-Forward mode.
7	Play Mode	VCR is in the Play mode.
5th byte
BIT		Status when BIT is “1”.

0Speed Code 0 VCR’s current tape running mode. See below.

1Speed Code 1 VCR’s current tape running mode. See below.

2Speed Code 2 VCR’s current tape running mode. See below.

3Speed Code 3 VCR’s current tape running mode. See below.

4	Shuttle REV			Reverse search is in progress.
5	Shuttle FWD			Forward search is in progress.
6	Not defined			Always 0.
7	Pause Mode			VCR is in the Pause mode.
Contents of 5th byte BIT 0/1/2/3 “Speed Code”
Speed Code		3	2	1	0
	BIT	0	0	0	0	Still
		0	0	0	1	Timelapse playback
		0	1	0	1	Timelapse recording/1X playback
		1	0	0	0	9X search

* When an error occurs in the VCR and the Warning mode is engaged, the third bit of the second byte sent back with the STATUS
SENSE (D7H) is set to “1”, showing the warning status.
In this case, release the warning via the RS-232C with the CLEAR (56H).		To release it on the VCR, turn the [OPERATE] button
off and on again.
(10) ALARM INPUT (06H)	: SR-L910E/EK return code
	This is returned when an alarm signal is input during recording.

3 Commands reference chart
VCR control commands
	Page
OPERATE ON/OFF	48
PLAY/REV PLAY	48
STOP	48
FF/REW	48
TIMER ON/OFF	48
OPE ON/OFF	48
EJECT	48
F-FIELD STEP	48
REC CHECK	48
REC/REC PAUSE	48
VISS FWD/REV	48
VISS SEARCH	49

Commands for VCR status verification
	Page	Byte returned
		from VCR
COUNT CODE	51	4 bytes
DEVICE TYPE	51	4 bytes
VTR INQ	51	1 byte
PL/AL COUNT SENSE	51	6 bytes
HOUR METER SENSE	51	5 bytes
TL STATUS SENSE	51	6 bytes
STATUS SENSE	52	5 bytes
DATA SENSE	51	6 bytes
TIME SENSE	51	6 bytes

VCR setting commands

5Recording/playback mode

MODE SHIFT MODE

5Timelapse VCR operation mode

TL STATUS

5Date and time setting

DATE SET TIME SET

5Timer programming

PRG SHIFT –/+ SET –/+

CANCEL

5On-screen setting

ON SCREEN ON/OFF ON SCREEN SELECT

5Others

AL/PL RESET COUNT RESET

Return codes from VCR

ACK

NAK

ERROR

CASSETTE OUT

COMPLETION

NOT TARGET

ALARM INPUT

Others

JVC TABLE 1 ON/OFF

Page

49 49 49

49 49 50 50 50

50 50 50 50 50

50 50 50 50 50 50

Page

48 53 53 48 48 48 52

Page 48

52 53