Tascam AV-452 User Manual

SERIAL IMPLEMENTATION OVERVIEW

TASCAM's AV-452 has a serial port capable of operating in standard RS-232, RS-422 or RS-485 protocols which offers access to most switches and indicator status on the AV-452. The AV-452 saves resources on recursive scanning with a "query all" command and by generating status replies on status changes. An additional RS-232 command allows IR strings to be learned for projector control, outlined separately in: AV-452_IR_PRG.pdf.

AV-452

Serial Control Specification

• Channel Mute or Dim Command & Status

• Complete AV Routing Command & Status

• Amp A and B In/Out Command & Status

• Intercom and Cascade Command & Status

• Room Volume Up/Down Commands

• "Query All Status" Macro Command

• Dip Switch Setting and EMG Circuit Status

• Uses RS-232, RS-422, or RS-485 Protocol

• Assignable Address for RS-485

• Generates Status Commands on State Changes

• Command to Program Outbound IR Strings

(For this feature, see AV-452_IR_PRG.pdf)

SERIAL ROTARY DIAL SETTING AND CABLE PIN-OUT

Settings and Voltages

Note: The rotary control and most dip switches are only scanned at power-up. You will need to turn the AV-452 off and back on for any changes to take effect.

Under the security panel, there is a rotary dial that determines the machine ID (address). This allows multiple AV-452 machines to be connected to a single serial line and still be addressed individually. If you are not using multiple machines, this should probably be set to "1".

The RS-422 and RS-485 operation follows normal specifications. However, RS-232 operation is a modification of the RS-422 port. It operates at 0-4.5V, rather than ±9V. This will operate normally with most equipment, such as old control systems or PC computers. If you have trouble with RS-232, try switching to RS-422 if you can to see if that solves the problem.

Cable Pin-Out, and Control System Settings

Connector shown from perspective of the rear panel female connector. The male connector for your cable will be the mirror image of this diagram.

Connector: Port Speed: Command Spacing: Character Length: Parity:

Female DB9 9600 bps >25msec 8 bit None

12345

6789

REAR PANEL MACHINE ID ROTARY ENCODER

POWER RGB2 THRU IN

OUT

SPEAKER OUTPUT

B A

100W/ch @ 8Ω 160W/ch @ 4Ω

VCR MONITOR

DVD

RS-232:

Pin 2:

Rx-Data

Pin 3:

Tx- Data

Pin 5:

Ground

RS-422:

Pin 2:

Rx-Data

Pin 3:

Tx- Data

Pin 5:

Ground

Pin 6:

Rx+ Data

Pin 7:

Tx+ Data

RS-485:

Pin 2:

TxRx-Data

Pin 3:

TxRx-Data

Pin 5:

Ground

Pin 6:

TxRx+ Data

Pin 7:

TxRx+ Data

CASCADE INPUT

OUT

R L RRL

EMG

SERIAL

CUSTOMIZE

ADDRESS

SW FUNCTION FUNCTION

UP DN

OFFON OFFON

LEARN IR

MIC HPF

CASCADE

INT GATE

EXC

SUM

SPK OUT

AV DUCK

MON

SERIAL

ADDRESS

LINE OUTPUT MEETING DVD VCR CD-RW CASSETTE RS-232

CV IN

(-) 12VEMG IN GND 24V 70V

UP DN

OFFON OFFON

INTERCOM

AV DUCKER LINE

RATIO THRESH

LEVEL

GATE

THRESH

OUTPUT ST MONO

PHANTOM POWER OFF ON

MIC GRP INSERT

Tx-

GND Rx-

Tx-

GND Rx-

Tx+

Rx+

TxRx-

GND

TxRx+

MIC4 MIC3 MIC2 MIC1

IN OUTIN OUTININ OUTOUT

MIC1MIC2MIC3MIC4

GND - +GND - + GND - + GND

- +

RELAY

CONTROL

7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.tascamcontractor.com

All features and specifications are subject to change without notice. Contact your local TASCAM representative for the latest information.

Page 1 of 8

AV-452_RS-232_spec.pdf

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COMMAND STRUCTURE

Preamble

.LF . . 0N cA

0Ah 2Eh 2Eh 2Eh50h 63h4Ch 30h 30h

Address

String

Type

Parameter

AV-452 Serial Control Specification

Del

Example Command of

Mute Channel 1, bypassing

machine address.

0 CR1.

30h 0Dh31h2Eh

Preamble - All command strings for the AV-452 begin with a line feed (0Ah).

Period Spacers - The four main data fields (Address, String Type, Parameter and Value) begin with a period (2Eh). This was mainly put in to make the string easier to read when coding. However, you can use the period to parse the string into the four major elements. Since the strings are always the same length, so you can also use byte position.

Address - Since the AV-452 can sit on an RS-485 line with other devices, the AV-452 is "addressable". This address corresponds to a rotary dial on the rear panel, underneath the security panel. If you send an address in the command, the AV-452 will only respond if the address matches the position of the rotary dial.

If there is only one AV-452 on the line, you can use "NA" (50h 4Ch) as an override on the machines. That tells the AV-452 to listen to the command regardless of its address.

It should be noted that status replies from the AV-452 will always include the machine's individual address. So, if you are using bidirectional communication from the AV-452, the

PAGE #

PARAMETER NUMBER & FUNCTION 00

3 3 3

3 4, 5 4, 5

-7 7 7 7

4, 5 4, 6

8 8 8 8

4, 5

8 8

MUTE CH 1

MUTE CH 2

MUTE CH 3

MUTE CH 4

DIM A/V

SELECT RGB

- NO FUNCTION -

AMP A

AMP B

INTERCOM

CASCADE

SELECT AV SOURCE

SELECT RECORD MONITOR

100Hz HPF DIP SWITCH

CASCADE MODE DIP SWITCH

MONO OUTPUT DIP SWITCH

EMG BREAK

AUX INPUT TYPE

ROOM VOLUME

REQUEST ALL STATUS

DEFINED VALUES 00=OFF, 01=ON 00=OFF, 01=ON 00=OFF, 01=ON 00=OFF, 01=ON 00=OFF, 01=ON 00=NO RGB, 01=RGB1, 02=RGB2

-00=OFF, 01=ON 00=OFF, 01=ON 00=OFF, 01=ON 00=OFF, 01=ON 00=CASSETTE, 01=CDRW, 02=DVD, 03=VCR, 04=AUX 00=SOURCE, 01=CASSETTE, 02=CDRW (READ ONLY): 00=OFF, 01=ON (READ ONLY): 00=OFF, 01=ON (READ ONLY): 00=OFF, 01=ON (READ ONLY): 00=NORMAL, 01=EMG BREAK (READ ONLY): 00=AUDIO ONLY, 01=AUDIO+VIDEO 00=DOWN, 01=UP (rotates dial for 1/2 second) 00 (DEFAULT)

programmer and installers should agree upon the address to be used.

String Type - This section indicates whether the string is a command, status query, or return status string. A lowercase "c" (63h) indicates a command for the AV-452, "q" (71h) indicates a query for the AV-452 to respond to, and "s" (73h) indicates a status return string from the AV-

452. In the example string above, the lowercase "c" indicates it is a command.

Parameter - This determines which function on the AV452 is being controlled, queried, or reported. In the example above, parameter "00" (57h 44h) refers to the mute control for mic channel 1. (The complete list of parameter numbers can be found below.)

Value - This is the desired the status of the parameter (or the current parameter status in a reply). For status queries, this should be set to "00" (30h 30h). In the example above, "01" (30h 31h) indicates Mute 1 on.

Delimiter - All command strings for the AV-452 end with a carriage return (0Dh).

7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.tascamcontractor.com

All features and specifications are subject to change without notice. Contact your local TASCAM representative for the latest information.

Page 2 of 8

AV-452_RS-232_spec.pdf

031104

MIC CHANNEL MUTE

AV-452 Serial Control Specification

The command structure for mute and mute status requests

are listed below.

When the AV-452 receives a command for a channel mute, it will reply with a status command of the new status, indicating the change was made. Status commands are

MUTE CHANNEL 1 OFF

MUTE CHANNEL 1 ON

QUERY MUTE 1 STATUS

STATUS - MUTE 1 OFF (ID 1)

STATUS - MUTE 1 ON (ID 1)

MUTE CHANNEL 2 OFF

MUTE CHANNEL 2 ON

QUERY MUTE 2 STATUS

STATUS - MUTE 2 OFF (ID 1)

STATUS - MUTE 2 ON (ID 1)

MUTE CHANNEL 3 OFF

MUTE CHANNEL 3 ON

QUERY MUTE 3 STATUS

STATUS - MUTE 3 OFF (ID 1)

STATUS - MUTE 3 ON (ID 1)

MUTE CHANNEL 4 OFF

MUTE CHANNEL 4 ON

QUERY MUTE 4 STATUS

STATUS - MUTE 4 OFF (ID 1)

STATUS - MUTE 4 ON (ID 1)

0Ah

2Eh

also generated whenever the function changes. For instance, if someone presses the MUTE button for channel 1, uses the IR command or relay control to toggle MUTE 1, or uses an RS-232 command to change MUTE 1, the AV452 will generate a status command on its own. This reduces the need for recursive scanning routines.

4Eh

30h

4Eh

30h

4Eh

30h

4Eh

30h

41h

31h

41h

31h

41h

31h

41h

31h

2Eh

63h

71h

73h

63h

71h

73h

63h

71h

73h

63h

71h

73h

2Eh030h

30h

31h

32h

33h

2Eh

30h

31h

30h

31h

30h

31h

30h

31h

30h

31h

30h

31h

30h

31h

30h

31h

0Dh

7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.tascamcontractor.com

All features and specifications are subject to change without notice. Contact your local TASCAM representative for the latest information.

Page 3 of 8

AV-452_RS-232_spec.pdf

031104

+ 5 hidden pages

Tascam AV-452 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual