The SONY LANC(tm) protocol


So funktioniert das SONY LANC™-Protokoll		How SONY LANC™ protocol works
Die LANC™-Schnittstelle ist eine bidirektionale serielle open-collector Schnittstelle, auf der zwei Geräte miteinander kommunizieren können. Der Camcorder erhält darüber Steuerbefehle und gibt Zählerstand, Laufwerkstatus und andere Daten zurück. Der Master gibt den Rahmen des Telegramms vor, indem er 8 Startbits generiert, denen jeweils 8 Bits (1 Byte) folgen. Anschliessend folgt ein (langes) Stopbit und das Spiel beginnt von vorn. Ein Bit hat die Länge von 104µs. Der Abstand zwischen zwei Startbits kann je nach Gerät zwischen 1200µs und 1400µs schwanken. Der Abstand zweier Telegramme beträgt 20ms für PAL/625 und 16,6ms für NTSC/525. Natürlich ist über die Schnittstelle auch der Service Mode einstellbar, ich gehe aber nicht darauf ein. Im Internet findet man dafür fertige Geräte zum Kauf.		LANC™ is a bidirektional serial open collector communication port, where two devices can communicate with each other. The camcorder gets its commands and sends back counter, status and other data. The master generates the telegram frame, creating 8 startbits, followed each by 8 bits (1 byte) and a (long) stopbit. Then everything starts again. One bit has a duration of 104µs. The distance between two startbits can vary between 1200µs and 1400µs depending on the device. The distance between two telegrams is 20ms for PAL/625 and 16.6ms for NTSC/525. Of course also the service mode is accessable, but I won't enter into this. In the internet you will find ready-to-use devices to buy.

LANC™ protocol - timing diagram

Navigation: [Byte 0] [Byte 1] [Byte 2/3] [Byte 4] [Byte 5] [Byte 6/7] [Links]

Connections:
		Voltage depends on model and battery. CTL only sometimes (VCR control signal) Connect Pin 3 to GND for >140 ms to power on/off. Or connect LANC to GND for >140 ms to power on. Cable length can be >10 m.
2.5 mm stereo "Klinke"	Mini-DIN

Ausser LANC™ (CTRL-L) gibt es bei SONY die CTRL-S Schnittstelle und natürlich die Möglichkeit der IR Bedienung. Die Command-Codes sind überall die gleichen, bei CTRL-S und IR benötigt man noch einen Geräte-Code. Ausserdem sind die Codes verglichen mit LANC™ um ein Bit nach rechts verschoben.
SIRCS entspricht im Timing dem CTRL-S, aber SIRCS wird mit 40 kHz gepulst. Ein Befehl ist erst nach 3 oder 4 Telegrammen gültig.

Except LANC™ (CTRL-L) there is also a CTRL-S plug at some SONY devices and of course the infrared control. The command codes are the same, but for CTRL-S and IR you need an additional device code and they are shifted right one bit, compared to LANC™.
SIRCS and CTRL-S have the same timing, but SIRCS is pulsed with 40 kHz. A command is valid after 3 or 4 telegrams.

Byte 0:

Sub-Command for Byte 1.

Binary code	Description
0001 1000	Normal command to VTR or Camera
0010 1000	Special command to Camera
0011 1000	Special command to VTR

"Low-Nibble": Device Code
"High-Nibble": Guide Code

Byte 1:

Sub-Command in Byte 0:	0001 1000 (bin)

The following table shows the actual Command-Codes to the device. Only valid with the corresponding Sub-Command in Byte 0.

command (hex)	action
00	program 1
02	program 2
04	program 3
06	program 4
08	program 5
0A	program 6
0C	program 7
0E	program 8
10	program 9
12	program 0 (10: SL-HF950 MKII)
14	program 11 (SL-HF950 MKII)
16	enter, program 12 (SL-HF950 MKII)
18	program 13
1A	program 14
1C	program 15
1E	program 16
20	program +
22	program -
24
26
28	x2
2A	power (or viewfinder) off
2B	photo write
2C	eject
2E	main/sub
30	stop
32	pause
33	start/stop
34	play
35	tele (only CCD-V90)
36	rew
37	wide (only CCD-V90)
38	fwd
39	photo capture
3A	rec
3C	rec-pause (some devices)
3E
40	still
42
44	x1/10
46	x1/5 (sometimes: vis. scan)
48
4A	x14
4C	x9
4E	tracking auto/manual
50	search -
52	search +
54	TV/VTR
56
58
5A	VTR
5B	date search / photo search / photo scan
5C
5E	power off
60	rev frame
62	fwd frame
64
65	edit-search -
66	x1
67	edit-search +
68
69	rec-review (not i.e. TR-2200)
6A
6C	sleep
6E	tracking normal
70
72
74	rew+play
76
78	AUX
7A	slow +
7C	slow -
7E
80
82	display mode
84	menu up
86	menu down
88	tracking/fine +
8A	tracking/fine -
8C	counter reset
8E	zero mem
90	index mark
92	index erase
94	shuttle edit +
96	shuttle edit -
98	data code or goto
99	data code or recording parameters
9A	menu
9C
9E	input select
A0
A2	execute
A4	quick timer
A6	index
A8
AA
AC	index search +
AE	index search -
B0	tape speed
B2	goto zero / tape return (not DV)
B4	counter display, data screen
B6	open/close (SL-HF950), replay (FauHaEss)
B8	timer display
BA
BC
BD	date display off
BE
BF	date display on
C0	timer set
C2	menu right, next
C4	menu left
C6	timer clear
C8	timer check
CA	timer record
CC
CE
D0	audio dub
D2
D4	edit assemble
D6	edit mark
D8	synchro edit
DA
DC	digital off (VCR), print (DV)
DE	speed +
E0	speed -
E2	stop motion
E4
E6
E8	channel scan / flash motion
EA
EC	voice boost
EE
F0
F2
F4
F6
F8	digital scan
FA	high-speed-rew
FC	still/shuttle (EV-S880)
FE

Sub-Command in Byte 0:	0010 1000 (bin)

The following table shows the actual Command-Codes to the device. Only valid with the corresponding Sub-Command in Byte 0.

command (hex)	action
00	variable speed zoom Tele: slowest speed
02	variable speed zoom Tele: faster than 00
04	variable speed zoom Tele: faster than 02
06	variable speed zoom Tele: faster than 04
08	variable speed zoom Tele: faster than 06
0A	variable speed zoom Tele: faster than 08
0C	variable speed zoom Tele: faster than 0A
0E	variable speed zoom Tele: fastest speed
10	variable speed zoom Wide: slowest speed
12	variable speed zoom Wide: faster than 10
14	variable speed zoom Wide: faster than 12
16	variable speed zoom Wide: faster than 14
18	variable speed zoom Wide: faster than 16
1A	variable speed zoom Wide: faster than 18
1C	variable speed zoom Wide: faster than 1A
1E	variable speed zoom Wide: fastest speed
25	Fader
27	rec start (DV)
29	rec stop (DV)
30	variable speed zoom Tele (avoiding digital zoom, some cameras): slowest speed
32	variable speed zoom Tele (avoiding digital zoom, some cameras): faster than 30
34	variable speed zoom Tele (avoiding digital zoom, some cameras): faster than 32
35	Zoom Tele slow (working all cameras since approx. 1996)
36	variable speed zoom Tele (avoiding digital zoom, some cameras): faster than 34
37	Zoom Wide slow (working all cameras since approx. 1996)
38	variable speed zoom Tele (avoiding digital zoom, some cameras): faster than 36
39	Zoom Tele fast (working all cameras since approx. 1996)
3A	variable speed zoom Tele (avoiding digital zoom, some cameras): faster than 38
3B	Zoom Wide fast (working all cameras since approx. 1996)
3C	variable speed zoom Tele (avoiding digital zoom, some cameras): faster than 3A
3E	variable speed zoom Tele (avoiding digital zoom, some cameras): fastest speed
41	Auto-Focus on/off (not if there is a real switch at the camera)
45	Focus manual far
47	Focus manual near
49	White balance toggle (not if white balance is selected via menu)
4B	Backlight (not DV)
51	Backlight (DV)
53	Exposure
61	Shutter
77	White balance reset (not if white balance is selected via menu)
85	Memory impose (models of the early 90's)
87	Color / Mode (models of the early 90's)
89	Superimpose (models of the early 90's)

Byte 2 / 3:

The significant Guide Code for Byte 3 is found in the "High-Nibble" of Byte 2.
The following table shows the known codes.
Some cameras show up a sort of ID in Byte 2 and 3, but I did not find any systematic order.
Has anybody an idea concerning the meaning of these values?

Guide Code	Description	Byte 3, L-N	Byte 3, H-N
9	channel / tuner	AV or OFF: 1010 channel: One's No Tuner: 0000 and H-N 0000	AV or OFF: 1010 channel: Ten's (at 0: 0000 or 1010) No Tuner: 0000 and L-N 0000
A	channel / tuner	AV or OFF: 1010 channel: Hundred's No Tuner: 0000	Tuner-Type 1: 00 Tuner-Type 2: 01 Tuner-Type 3: 10

Byte 4:

Status-Code from the connected device.

L-N H-N	0	1	2	3	4	5	6	7	8
0	initial	is eject	stop	fwd	rec		play	play/pause fwd	AL insert
1		dew cass. out	load		rec/ pause			frame fwd	AL ins-pause
2		ejecting	cassette busy		timer-rec		x1 fwd	1/5 fwd	AR insert
3		unload	low-battery	go zero/play f.	timer-rec s.		x1 rev	1/5 rev	AR ins-pause
4			dew stop	fwd mem stop	AV insert		cue	1/10 fwd	AL+V insert
5			emergency		AV ins.-pause		rev	1/10 rev	AL+V ins-ps
6			tape end		video insert		x2/x3 fwd	frame fwd	AR+V insert
7			tape top		video ins.-ps		x2/x3 rev	frame rev	AL+R ins-ps
8				rew	audio dub	edit search+	x9 fwd
9			stp after zero		a.dub pause	edit search-	x9 rev	play/pause rev
A			load emer.	auto-play	cam rec	edit-s fwd	frame sea. cue
B		unload emerg.	stop emerg. 1	go zero/play r.	cam stby	edit-s rev	frame sea. rev
C			stop emerg. 2	rew mem stop			x14 fwd
D				hi-speed rew			x14 rev
E			stop NC
F						edit pause

Byte 5:

Bit	Description
0	1 = invalid transmitted code
1	1 = rec protection (old models: tape pre-end)
2	1 = battery low
3	1 = zero mem / zero found
4...7	Guide Code for Byte 6 and 7

Byte 6 / 7:

The significant Guide Code for Byte 6 and 7 is found in the "High-Nibble" of Byte 5.
The following table shows the known codes.

Guide Code	Description	Byte 6, L-N	Byte 6, H-N	Byte 7, L-N	Byte 7, H-N
0
1	Status V8 and Hi8	0+1: tape speed 00=SP, 01=LP 2: standard FM-sound 3: PCM-sound	0: camera-mode 1: rec protection / tape pre-end 2: ME (0=MP) 3: 13µm (0=10µm)	0: 1: camera-mode 2: 3: servo / mechanics on	0+2: input select (00=tuner, 01=sim, 11=line)
2	decimal Counter	One's	Ten's	Hundred's	Thousand's
3	real time Counter, picture Counter	Seconds One's, Picture One's	Seconds Ten's, Picture Ten's	Minutes One's, Picture Hundred's	Minutes Ten's, Picture Thousand's
4	real time Counter	Hours One's	Hours Ten's	Frames One's or Day One's (or 0000/1111) ("Day" only seen in CCD-V90E!)	0+1: Frames Ten's or Day Ten's 2: RCTC 3: sign (1=negativ) (or 0000/1111)
5	remain time	Minutes One's	Minutes Ten's	Hours One's	2: 0=calculating (old devices: 1111)
6
7	Status Betamax or DV	Betamax: 0+1: tape speed 00=BI, 01=BII, 10=BIII 2: Beta Hifi 3: servo/ mechanics on DV: 0+1: tape-speed 00=SP, 01=LP 2: audio (0=12bit, 1=16bit) 3: servo / mechanics on	0: 0=Betamax, 1=DV 1: rec protection 2+3: Byte 7 DV mode: 00=DV input 01=ext. Status DV in a Camera 10= 11=ext. Status DV in a VTR	Betamax: 0+1: Audio L+R insert 2: Video insert 3: assemble DV mode 00: input tuner: 0000, input Line: 0101, input DV: 1010 DV mode 01: mode: 0000=player, 0011=camera	Betamax: 0: edit 1: preview 2: EE 3: DV mode 00: Line 1: 0000 Line 3: 1010 Line 2: 0101 Line 4: 1111
8	Data Guide	DC: 4	DC: 1	DC: 3=Date, 4=Time	DC: 0
9	Data-Code (Tape + Picture)	Date: Year One's Time: Hour One's	Date: Year Ten's Time: Hour Ten's	Date: Month One's Time: Minutes One's	Date: Month Ten's Time: Minutes Ten's
A	Data-Code (Tape + Picture)	Date: Day One's Time: Seconds One's	Date: Day Ten's Time: Seconds Ten's	DC: 1111 sometimes 1000	DC: 1111 sometimes 1001/1011
B
C	Status Hi8, DV (+GC1)	Hi8: 0100 DV: 0010 or 0001	Hi8: 0100 DV: 0010 or 0000	0: camera mode / CTL found 1: 2: edit on 3: auto Hi8	0000
D
E	Status Photo	0: 1=photo mode selected 1: 1=memorystick™ inserted 2: 1=memorystick™ write-protected	0: 1=memorystick™ play 1: 1=memorystick™ search 2: 1=memorystick™ full 3: 1=camera with memorystick™	0: 1=photo mode available
F

Wer mit dem Lötkolben umgehen kann, kann sich für ca. 20 Euro eine Videoschnittlösung mit integrierter lernfähiger Infrarotfernbedienung bauen.
Das Ding heisst IRdeo und ist hier sehr ausführlich beschrieben.
Mit IRdeo ist es auch möglich, eigene Programme zu entwerfen, die LANC™ (CTRL-L) empfangen und Befehle an Sony Equipment aussenden.

If you are familiar with a soldering iron you can construct your own video editing solution with integrated learning remote control for only EUR 20.
It is called IRdeo and is described here very comprehensive.
With IRdeo it is possible to design your own software for Sony devices to receive and send LANC™ (CTRL-L) commands.

"LANC™" und "memorystick" sind eingetragene Warenzeichen von SONY
"LANC™" and "memorystick™" are registered trademarks of SONY

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updated: 2004-05-13

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So funktioniert das SONY LANC™-Protokoll