Tascam RS-232 User Manual

Page 1

RS-232 IMPLEMENTATION OVERVIEW

TASCAM's 322 cassette deck has a standard RS232C port, capable of receiving commands and sending status information. Commands are included for transport functions, including CPS (Compumatic Program Search), Counter Reset, and Sync Reverse settings. Tally information will include deck status, timer information and record prohibit status.

322

RS-232 Specification

• Individual Control Over Each Deck

• Extensive Transport Control Command Set

(Includes CPS, RTZ, Sync Reverse and Dubbing)

• Transport Status Tallies

• Tape Counter Readout Information (MM:SS)

• Tape Counter Reset Command

• Tape Status (Record Prohibit/Enable)

• Empty Deck Indication

COMMAND STRUCTURE & BEHAVIOR

Basic Transport Commands:

Preamble

0 0 0 11 11 LF

0Ah 30h 30h 30h31h 31h31h 31h 0Dh

Comma

eck

elimiter

RS-232 Pin Assignment & Protocol Specification:

Connector: Pin 2: Pin 3: Pin 5:

DB9 Rx Data Tx Data Ground

Rx Data

Tx Data

Ground

322 RS-232 Port External Unit

Data Transmission Speed: Command Spacing: Character Length: Parity Bit: Stop Bit:

Tx Data

Rx Data

Ground

Status Request Commands:

Preamble

0 0 CR5 10

0Ah 30h 30h 00h35h 31h30h

Command

Deck

9600 bps >20msec 8 bit None 1 bit

Delimiter

Preamble - All command strings for the 322 begin with an identifying phrase of "Line Feed" (0Ah) and a "0" (30h).

Command - The command follows the preamble directly. (For a complete list of all the commands, see Transport Commands on the next page.)

Deck - This determines whether the command is targeted at Deck 1 (30h 31h) or Deck 2 (30h 32h).

Direction - For commands which have directionality to it, this determines whether the forward or reverse direction is desired. Forward direction (30h 31h) and reverse direction (30h 32h) are used for commands with direction. Transport commands without direction use a "no direction" (30h 30h) place holder.

SENSE MECHANISM STATUS, DECK 1PLAY, DECK 1, SIDE A

Status request commands will follow the same structure as basic transport commands, except a direction is not included in the command. (That information will be given in the reply.)

The 322 does not automatically generate status commands when mechanisms change, so the controller will need to scan the 322 at some rate.

When setting a scanning cycle, it is important to recognize that the 322 requires 20 milliseconds between commands. Since there are 3 types of information per deck (time, record prohibit, and mechanism status), it is easily possible to scan each status every half second, and still only be sending messages to the 322 every 83 milliseconds.

TASCAM USA has tested the 322, scanning each status type

Delimiter - All command strings for the 322 end with

every half second, and the 322 performed flawlessly.

"Carriage Return" (0Dh) as the delimiter.

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

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

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COMMAND STRUCTURE & BEHAVIOR (CONT)

When the 322 receives commands, the behavior mimics the front panel controls. So, when PLAY DECK 1 SIDE A is issued, the 322 may not be engaged directly into PLAY. (A chart at right explains the actual behavior.)

These behaviors are fairly straight forward, since these commands follow normal cassette logic that most end users are already familiar with. This makes programming a touch panel for standard remote control applications very easy. But for unattended automation systems run completely by computer, it might be wise to create a simple macro which returns the 322 to a known state, like STOP on side A.

- If the 322 was recording on side B, then the machine will flip to side A and continue recording on side A.

- If the 322 was recording on side A, then it will continue recording on side A.

- If the 322 was in record pause on side A, then record is engaged on side A.

- If the 322 was in record pause on side B, then the 322 will flip directions and remain in record pause on side A.

- If the 322 was in pause on side B, then the 322 will flip directions and remain in pause on side A.

COMMAND LIST

322 RS-232 Specification

STOP, DECK 1 - CMND "10"

STOP, DECK 2

PLAY, DECK 1, SIDE A - CMND "11"

PLAY, DECK 1, SIDE B

PLAY, DECK 2, SIDE A

PLAY, DECK 2, SIDE B

PAUSE, DECK 1 - CMND "1C"

PAUSE, DECK 2

REC PAUSE, DECK 1 - CMND "14"

REC PAUSE, DECK 2

REC MUTE, DECK 1 - CMND "1B"

REC MUTE, DECK 2

FFWD, DECK 1 - CMND "1A"

REW, DECK 1

FFWD, DECK 2

REW, DECK 2

RESET COUNTER, DECK 1 - CMND "65"

RESET COUNTER, DECK 2

0Ah

30h

31h

36h

30h030h

31h030h

43h030h

34h030h

42h030h

41h030h

35h030h

31h

30h030hCR0Dh

32h

30h030hCR0Dh

31h

30h131hCR0Dh

31h

30h232hCR0Dh

32h

30h131hCR0Dh

32h

30h232hCR0Dh

31h

30h030hCR0Dh

32h

30h030hCR0Dh

31h

30h030hCR0Dh

32h

30h030hCR0Dh

31h

30h030hCR0Dh

32h

30h030hCR0Dh

31h

30h131hCR0Dh

31h

30h232hCR0Dh

32h

30h131hCR0Dh

32h

30h232hCR0Dh

31h

30h030hCR0Dh

32h

30h030hCR0Dh

Continued on next page.

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

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

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Page 3

COMMAND LIST (CONT)

322 RS-232 Specification

RTZ, DECK 1 - CMND "2D"

RTZ, DECK 2

CPS FFWD, DECK 1 - CMND "1D"

CPS REW, DECK 1

CPS FFWD, DECK 2

CPS REW, DECK 2

SENSE MECH STATUS, DECK 1 - CMND "50"

SENSE MECH STATUS, DECK 2

SENSE TAPE STATUS, DECK 1 - CMND "56"

SENSE TAPE STATUS, DECK 2

SENSE TAPE COUNTER, DECK 1 - CMND "5A"

SENSE TAPE COUNTER, DECK 2

0Ah

30h

32h

31h

35h

44h030h

30h030h

36h030h

41h030h

31h

30h030hCR0Dh

32h

30h030hCR0Dh

31h

30h131hCR0Dh

31h

30h232hCR0Dh

32h

30h131hCR0Dh

32h

30h232hCR0Dh

31h

0Dh

32h

0Dh

31h

0Dh

32h

0Dh

31h

0Dh

32h

0Dh

TALLY STRUCTURE & BEHAVIOR

Return Tallies:

The first section following the preamble willl define whether the tally is giving information about Mechanism Status (D0h), Tape Status (D6h), or Tape Counter (DAh) tally.

For Mechanism Status tallies, following bits will represent the current function of a deck, which mechanism is being described, and the direction the system is defaulted to. (Side A or Side B)

For Tape Counter tallies, the data blocks will represent the Mechanism first, then the minutes and seconds. If the 322 is in CPS mode, the minutes display will transmit "CP" and the seconds will show the number of breaks the CPS mechanism is going to pass. (This is exactly mimicking the timer display on the 322.)

It should be noted that the 322 will not transmit positive or negative time information from the deck, though the display can indicate negative time.

Continued on next page.

rmat

Preamble

0 1D 00

0Ah 30h 31h44h 30h30h

IN STOP, DECK 1, SIDE A

As with the FFWD and REW transport commands, FFWD and REW tallies do not reverse for side B. They are always shuttling tape in the same direction. So, on side B, REW will shuttle ahead, and FFWD will shuttle back. This is consistant with having a dedicate PLAY B button, keeping the relational arrows for commands.

Preamble

0 0D 2A

0Ah 30h 30h44h 32h41h

TAPE COUNTER 2 SHOWS 26:47

Mechanism

rmat

Tape Counter

Status

Mechanism

0 0 11

30h 30h31h 31h 0Dh

10's Minutes

2 4 76

32h 34h36h 37h 0Dh

Direction

10's Seconds

Delimiter

nds

Delimiter

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

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

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TALLY STRUCTURE & BEHAVIOR (CONT.)

322 RS-232 Specification

For Tape Status tallies, the data blocks will represent mechanism and Deck 1 and Deck 2 Record Prohibit status will be displayed. (This is determined by the punch blocks on the top of the cassette itself.)

A chart for all Mechanism Tallies and Tape Status Information combinations are shown on the next page in the Tally List & Behavior chart on the next two pages.

TALLY LIST

STOP, DECK 1, SIDE A - STATUS "10"

STOP, DECK 1, SIDE B

STOP, DECK 2, SIDE A

STOP, DECK 2, SIDE B

PLAY, DECK 1, SIDE A - STATUS "11", DIR "01"

PLAY, DECK 1, SIDE B

PLAY, DECK 2, SIDE A

PLAY, DECK 2, SIDE B

PAUSE, DECK 1, SIDE A - STATUS "1C"

PAUSE, DECK 1, SIDE B

PAUSE, DECK 2, SIDE A

PAUSE, DECK 2, SIDE B

RECORD, DECK 1, SIDE A - STATUS "13"

RECORD, DECK 1, SIDE B

RECORD, DECK 2, SIDE A

RECORD, DECK 2, SIDE B

mbl

Prea

0 0D 16

pe St

0Ah 30h 30h44h 31h36h

atus

Inform

tion

Mechanism

0 0 11

30h 30h31h 31h 0Dh

DECK 1, SIDE A RECORD PROHIBITED

0Ah

30h

44h

30h131h

30h

31h

43h

33h

ce Holder

Pla

Deck 2

eck 1

30h131h030h131hCR0Dh

30h131h030h232hCR0Dh

30h232h030h131hCR0Dh

30h232h030h232hCR0Dh

30h131h030h131hCR0Dh

30h131h030h232hCR0Dh

30h232h030h131hCR0Dh

30h232h030h232hCR0Dh

30h131h030h131hCR0Dh

30h131h030h232hCR0Dh

30h232h030h131hCR0Dh

30h232h030h232hCR0Dh

30h131h030h131hCR0Dh

30h131h030h232hCR0Dh

30h232h030h131hCR0Dh

30h232h030h232hCR0Dh

imiter

Continued on next page.

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

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

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TALLY LIST & BEHAVIORS (CONT)

322 RS-232 Specification

RECORD PAUSE, DECK 1, SIDE A - STATUS "14"

RECORD PAUSE, DECK 1, SIDE B

RECORD PAUSE, DECK 2, SIDE A

RECORD PAUSE, DECK 2, SIDE B

RECORD MUTE, DECK 1, SIDE A - STATUS "1B"

RECORD MUTE, DECK 1, SIDE B

RECORD MUTE, DECK 2, SIDE A

RECORD MUTE, DECK 2, SIDE B

FFWD, DECK 1, SIDE A - STATUS "19"

FFWD, DECK 1, SIDE B

FFWD, DECK 2, SIDE A

FFWD, DECK 2, SIDE B

REW, DECK 1, SIDE A - STATUS "1A"

REW, DECK 1, SIDE B

REW, DECK 2, SIDE A

REW, DECK 2, SIDE B

TAPE STATUS, DECK 1, ALL REC ENABLE

TAPE STATUS, DECK 1, A: REC PROH, B: REC ENABLE

TAPE STATUS, DECK 1, A: REC ENABLE, B: REC PROH

TAPE STATUS, DECK 1, A: REC PROH, B: REC PROH

TAPE STATUS, DECK 2, ALL REC ENABLE

TAPE STATUS, DECK 2, A: REC PROH, B: REC ENABLE

TAPE STATUS, DECK 2, A: REC ENABLE, B: REC PROH

TAPE STATUS, DECK 2, A: REC PROH, B: REC PROH

0Ah

30h

44h

30h131h

36h030h

34h

30h131h030h131hCR0Dh

34h

30h131h030h232hCR0Dh

34h

30h232h030h131hCR0Dh

34h

30h232h030h232hCR0Dh

42h

30h131h030h131hCR0Dh

42h

30h131h030h232hCR0Dh

42h

30h232h030h131hCR0Dh

42h

30h232h030h232hCR0Dh

39h

30h131h030h131hCR0Dh

39h

30h131h030h232hCR0Dh

39h

30h232h030h131hCR0Dh

39h

30h232h030h232hCR0Dh

41h

30h131h030h131hCR0Dh

41h

30h131h030h232hCR0Dh

41h

30h232h030h131hCR0Dh

41h

30h232h030h232hCR0Dh

31h

30h131h030h030hCR0Dh

31h

30h131h030h131hCR0Dh

31h

30h131h131h030hCR0Dh

31h

30h131h131h131hCR0Dh

32h

30h131h030h030hCR0Dh

32h

30h131h030h131hCR0Dh

32h

30h131h131h030hCR0Dh

32h

30h131h131h131hCR0Dh

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

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

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Tascam RS-232 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual