LANC协议英文版

So funktioniert das SONY LANC(tm)-Protokoll		How SONY's LANC(tm) protocol works
Die LANC(tm) Schnittstelle ist eine bidirektionale serielle open-collector Schnittstelle, auf der zwei Geräte miteinander kommunizieren können. Der Camcorder oder der Fotoapparat (hier heisst die Buchse ACC) erhält darüber Steuerbefehle und gibt seinen Status zurück. Beim Camcorder kann man noch mehr Daten auslesen: Time Code, Data Code, Zählwerk, Restlaufzeit, Warnsignale und Laufwerksrückmeldungen. LANC steht für Logic Application Control Bus System (aus einer Sony Information im April 1991 zur Einführung des "8mm Standard Time Code"). Der Master (also der Camcorder oder der Fotoapparat) 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. Das Timing entspricht RS232 bei 9600 Baud. 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. Auch manche Camcorder der Firma Canon haben eine LANC-Buchse, allerdings reagieren diese Geräte nur auf wenige Befehle.		LANC(tm) is a bidirektional serial open collector communication port, where two devices can communicate with each other. The camcorder or still video camera (plug is called ACC here) is able to receive commands and sends back its status. The camcorder provides even more data: time code, data code, counter, remain time, alerts and drive feedback. LANC ist short for Logic Application Control Bus System (from a Sony information to the introduction of the "8mm Standard Time Code" in april 1991). The master (camcorder or still video camera) 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. The timing conforms to RS232 at 9600 Baud. 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. Some Canon camcorders also have a LANC-Plug, but only few commands are implemented.

 

 

LANC protocol - timing diagram

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

 

Connections:
			Voltage depends on model and battery. CTL signal only on some devices (VCR control signal). Connect LANC Signal to GND for more than 140ms to power on (or on Mini-DIN Pin 3 to GND). Cable length can easily exceed 10m.
2.5 mm stereo Klinke / 2.5 mm stereo jack	Mini-DIN	A/V jack
	Sicht auf Gerätebuchse   /   device jack view

 

Ein Befehl ist erst nach 3...4 Telegrammen gültig. 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.

A command is valid after 3...4 telegrams. 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.

 

Byte 0: Sub-Command for Byte 1. Binary code Description 0001 1000 Normal command to VTR or video camera 0010 1000 Special command to video camera 0011 1000 Special command to VTR 0001 1110 Normal command to still video camera "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 (Normal command to VTR or video camera). Only valid with the corresponding Sub-Command in Byte 0. command (hex) action 00 program 1 02 program 2 04 program 3 05 mode (only HDV/AVCHD) 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 mode movie/still (older models: 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 + 7B tape end search (HDV) 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 +, date search 01 (HDV) AE index search -, date search -01 (HDV) 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 (Special command to video camera). 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 21 grid (AVCHD) 25 fader 27 rec start (DV, some cameras) 29 rec stop (DV, some cameras) 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 (only cameras until approx. 1996) 4B Backlight (not DV) 51 Backlight (DV) 53 Exposure auto/man. toggle (models of the early 90's) Iris more close 55 Iris more open 61 Shutter (models of the early 90's) 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) AF Iris auto

 

Sub-Command in Byte 0: 1101 1000 (bin) The following table shows the actual Command-Codes to the device (command to video camera recording to SD-Card). Only valid with the corresponding Sub-Command in Byte 0. command (hex) action 00 start/stop 01 mode movie/still 02 photo write 03 power off 05 menu 09 execute 0B menu right 0C photo capture 0D menu left 0F menu up 11 menu down 17 data screen

 

Sub-Command in Byte 0: 0001 1110 (bin) The following table shows the actual Command-Codes to the device (Normal command to still video camera). Only valid with the corresponding Sub-Command in Byte 0. command (hex) action 01 variable speed zoom Tele: slowest speed 03 variable speed zoom Tele: faster than 01 05 variable speed zoom Tele: faster than 03 07 variable speed zoom Tele: faster than 05 09 variable speed zoom Tele: faster than 07 0B variable speed zoom Tele: faster than 09 0D variable speed zoom Tele: faster than 0B 0F variable speed zoom Tele: fastest speed 11 variable speed zoom Wide: slowest speed 13 variable speed zoom Wide: faster than 11 15 variable speed zoom Wide: faster than 13 17 variable speed zoom Wide: faster than 15 19 variable speed zoom Wide: faster than 17 1B variable speed zoom Wide: faster than 19 1D variable speed zoom Wide: faster than 1B 1F variable speed zoom Wide: fastest speed 52 photo preview 58 photo save (or in movie mode: start-stop) 5E power off 94 Zoom Tele slow 96 Zoom Wide slow 98 Zoom Tele fast 9A Zoom Wide fast

 

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 for video cameras. 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 (video camera). 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       Status-Code from the connected device (still video camera). L-N H-N 0 D E 0 initial     D     mpeg movie mode E     photo mode F   play mode setup mode

 

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 Status AVCHD 0: 1=AVCHD camera mode 1: 1=AVCHD photo mode 0000 0000 0000 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(tm) inserted 2: 1=memorystick(tm) write-protected 0: 1=memorystick(tm) play 1: 1=memorystick(tm) search 2: 1=memorystick(tm) full 3: 1=camera with memorystick(tm) 0: 1=photo mode available   F         uanzhuan

 

 

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