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11

RS-232 CONTROL

Serial Port:

  The 9-pin Sub-D (male) connector provides the RS-232 compatible serial interface signals used for computer (or third-party)

control of the RCU.  The RCU Serial Port transmits serial data on pin 3 (TxD), receives serial data on pin 2 (RxD), and provides a ground
on Pin 5.  The Data Terminal Ready (DTR) & Request To Send (RTS) output signals are connected to the +12 Volt power supply (through
a resistor) and are always asserted when the RCU power is on.  

NOTE:

  The Serial Port will also transmit commands which have been

assigned to the RCU Remote Control pots & Logic Input switches (see Setup on pg. 4).

pin #1  =  not used
pin #2  =  Receive Data (RxD) input
pin #3  =  Transmit Data (TxD) output
pin #4  =  Data Terminal Ready (DTR) output
pin #5  =  ground

pin #6  =  not used
pin #7  =  Request To Send (RTS) output
pin #8  =  not used
pin #9  =  not used

serial port

5

4

3

2

1

9

8

7

6

The RCU only requires receive data (pin 2), transmit data (pin 3), and signal ground (pin 5) to be connected for successful data
communications (see cable diagram below).  However, the PC may require that signals be present on the data set ready, clear to send, or
carrier detect inputs, as well as the receive data, transmit data, and signal ground pins.  Success or failure depends entirely on the actual
computer hardware and software being used.  When trying to solve an interfacing problem, the most important thing to remember is that an
output of one device should connect to one or more inputs of the other device, and that two outputs should never be connected together.
Also, keep in mind that the RS-232 specification calls for the cable length to be no greater than 50 feet (although it is not unusual to be
able to operate over distances of 150 to 250 feet), and the connectors must be of the appropriate gender (male or female) to mate
properly.  For best results, a shielded cable should be used, with the shield connected to chassis ground.  Undesirable ground loops may
occur when the RCU is connected to a PC (if the system grounding is not carefully designed).  For best performance, the PC ground and
the chassis ground of the RCU should be at the same potential, and the PC should get AC power from the same source as the RCU (and
any other audio equipment which is connected to the RCU).  Since most lap-top computers are isolated from earth ground, this should
rarely pose a problem.

Serial Port Data Communications Parameters:

  The RCU communicates through the Serial Port at the factory selected rate of 9600 bits

per second, with 8 data bits, 1 stop bit, and no parity.  The RCU utilizes a subset of the standard 7-bit ASCII character set.  The eighth data
bit of each character (the most significant bit) should always be 0.  The computer should not echo the characters it receives.  The computer
should not be set for either hardware (DTR) or software (XON/XOFF) flow control.  The baud rate may be changed to either 2400, 19200,
or 38400 bits per second by means of the software (see Setup on pg. 4).

Link Port Connections:

  The 9-pin Sub-D (female) connector provides the RS-232 compatible serial interface signals used for RCU

control of other ADVANTAGE

®

 programmable products within a system.  The Link Port of one device simply connects to the Serial Port of

the next device, and so forth (see diagram below).  Link cables are available as an option (Biamp #909-0057-00).  The Data Set Ready
(DSR) & Clear To Send (CTS) output signals are connected to the +12 Volt power supply (through a resistor) and are always asserted
when the RCU power is on.  

NOTE:

  All but the final device in a system should have its ‘Link’ switch pressed in (see Connections on pg. 2).

The Link Port transmits commands assigned to the Remote Control pots & Logic Inputs, and will ‘echo’ commands received at the Serial
Port (from computers or third-party controllers).

pin #1  =  not used
pin #2  =  Transmit Data (TxD) output
pin #3  =  Receive Data (RxD) input
pin #4  =  not used
pin #5  =  ground

pin #6  =  Data Set Ready (DSR) output
pin #7  =  not used
pin #8  =  Clear To Send (CTS) output
pin #9  =  not used

link port

1

2

3

4

5

6

7

8

9

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

CD

RxD

TxD

DTR

DSR

RTS
CTS

RI

gnd

PC

(shield)

serial port

male

female

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

n/a
RxD
TxD
DTR
gnd
n/a
RTS
n/a
n/a

RCU

serial port

female

male

Serial Cable

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

n/a

TxD

n/a

DSR

n/a

CTS

n/a

gnd

RCU

(shield)

link port

female

male

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

n/a
RxD
TxD
DTR
gnd
n/a
RTS
n/a
n/a

unit 2

serial port

female

male

Link Cable

RxD

Содержание RCU

Страница 1: ...ADVANTAGE RCU Remote Control Unit Operation Manual 9 2 99 Biamp Systems 10074 S W Arctic Drive Beaverton Oregon 97005 U S A 503 641 7287 http www biamp com an affiliate of Rauland Borg Corp ...

Страница 2: ...blank ...

Страница 3: ...on recall preset functions within a system having multiple ADVANTAGE products The RCU carries a five year warranty RCU features include RS 232 serial link ports for communication with products remote control port accepts up to 23 potentiometers logic inputs port accepts up to 24 contact closures programming software assigns functions to controls potentiometers provide various level control functio...

Страница 4: ...utput Pin 3 Receive Data RxD input Pin 4 not used Pin 5 Ground Pin 6 Data Set Ready DSR output Pin 7 not used Pin 8 Clear To Send CTS output Pin 9 not used NOTE The Link Port also transmits commands assigned to external potentiometer contact closures see Remote Control Logic Inputs below Link Switch The Link Switch is used when connecting multiple devices in a Link Port to Serial Port configuratio...

Страница 5: ...DC The Logic Input is activated when its input goes low less than 0 8 VDC and is de activated when its input goes high greater than 2 4 VDC A Logic Input is controlled in one of three ways 1 Use a switch relay or other contact closure such as from a third party controller to short the Logic Input to ground 2 Use an NPN style open collector logic output from an external to short the Logic Input to ...

Страница 6: ...een The Main screen appears whenever an RCU file is opened Pot Definition Logic Input Definition Configuration Options screens are then available from the Configure RCU menu The File menu provides functions such as open close save etc The Settings menu recalls the Comm Port Configuration screen The Window menu arranges the active product screens The Help menu explains the available adjustments To ...

Страница 7: ...disabled the LED indicator is grayed out slightly and a small X appears in the LED The LED indicator is updated whenever the logic input status is changed even if the logic input is disabled When the LED indicator is on red the switch contact is closed the logic input is shorted to ground through the contact closure When the LED indicator is off the switch contact is open Each logic input may be p...

Страница 8: ... Muting checkbox appears With these models if you wish to use a pot as a volume control AND use a logic input to perform muting functions for the pot you should select the Use Logic Input for Muting checkbox and an appropriate logic input definition will automatically be created for you This links the operation of the logic input and the pot allowing for cooperative control NOTE Use Logic Input fo...

Страница 9: ...ing the Configuration Options Screen the six highest logic inputs 19 through 24 may be programmed to operate in binary mode When in binary mode a logic input definition may be created for each of the 64 possible binary on off combinations of logic inputs 19 through 24 Logic inputs may also be programmed to enable disable other logic inputs or pots or to transmit a user defined ASCII character stri...

Страница 10: ...reen for that RCU Each RCU may be assigned a device number from 0 to 63 This allows multiple RCUs or other ADVANTAGE programmable products to be individually controlled when linked together Unique device numbers must be assigned to each device before the devices are linked together The last six logic inputs logic inputs 19 through 24 may be configured to operate in binary mode In this mode wheneve...

Страница 11: ...MP SYSTEMS Portland Oregon an affiliate of Rauland Borg Corp RCU 2 50 1 COMPACT DIGITAL AUDIO microphones channels 1 8 Logic Input 17 defined to select between enable disable pots 1 22 manual mode logic inputs 1 16 auto mode presets Logic Inputs 1 16 defined to recall VRAM presets 1 16 Pots 1 22 defined to adjust all VRAM input output levels CD player aux 1 cassette aux 2 Main Output Aux Output VR...

Страница 12: ...unt control panel corresponds to one character in the standard ASCII character set The character equivalents are summarized in the following table This table includes all forty possible buttons their button numbers and their ASCII code equivalents Their button definitions are defined during programming of the product to be controlled button 01 B programmable by product button 15 P programmable by ...

Страница 13: ...l and the PC should get AC power from the same source as the RCU and any other audio equipment which is connected to the RCU Since most lap top computers are isolated from earth ground this should rarely pose a problem Serial Port Data Communications Parameters The RCU communicates through the Serial Port at the factory selected rate of 9600 bits per second with 8 data bits 1 stop bit and no parit...

Страница 14: ... fans electrolytic capacitors and the normal wear and tear of appearance items such as paint knobs handles and covers are not covered under this warranty 4 BIAMP SYSTEMS SHALL NOT IN ANY EVENT BE LIABLE FOR SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING LOST PROFITS LOSS OF USE PROPERTY DAMAGE INJURY TO GOODWILL OR OTHER ECONOMIC LOSS OF ANY SORT EXCEPT AS EXPRESSLY PROVIDED HEREIN BIAMP SY...

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