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SDXI-U2 Serial ASCII Data Exchange Interface 

 General Description V1.15 

 
 

© Stemin GmbH                    

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 SDXI U2 Protocol Description V1.15.doc  

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page 

5 of 15

 

1  General description 

1.1  Protocol SDXI 

The SDXI-U2 (Serial Data Exchange Interface) should allow interacting, controlling and 
maintaining a variety of different devices. The serial interface was designed without any 
higher protocol function like a handshake or something equal. This interface allows the 
communication of embedded devices with a PC and/or among each other. Every device, a 
PC or the embedded device is responsible for the correct receiving and interpreting of the 
telegrams. This refers also to the timing-behaviour, this means that the devices must be able 
to react and process to the telegrams during runtime, without validating the timing conditions, 
which could lead to the loss of telegrams. A loss of a telegram can also cause a loss of data 
because for some telegram a repetition of the telegram is not possible. If the external device 
is fast enough and is controlled by an interrupt driven interface there should be no problem to 
handle the telegrams. 

1.2  Protocol Extension SDXI-U2 (ASCII Mode) 

The SDXI protocol includes a second, higher level protocol interface called SDXI-U2 
protocol, which allows the user to communicate and control the device with a simple terminal 
program using an ASCII-based interface language.  

This SDXI-U2 protocol provides a subset of the regular SDXI telegrams respectively SDXI 
commands, to make the basic functions available for an easy access via various media 
control devices like AMX, Crestron or something similar. 

1.3  Serial Parameters 

To select a user specific baud rate, you can select a different baud rate using the according 
SDXI-U2 telegram. For detailed description, please refer to the manual.  

Default parameters: 

BAUDRATE:  9600 
PARITY:  

NONE  (fixed) 

STOPBIT: 

1  

(fixed) 

DATABITS: 

8  

(fixed) 

1.4  Availability of Telegrams 

The availability of each telegram depends on optional and device specific software modules 
as well. 

1.5  Note: Enabling Remote Control 

To enable the remote control functionality, it is first necessary to enable the remote 
interface of the device by sending a “Set Remote Interface” command to the device! 

Содержание SDXI-U2

Страница 1: ...SDXI U2 Serial ASCII Data Exchange Interface General Description Version 1 15 Date 08 02 2010 copyright Stemin GmbH 2009 2010 All Rights Reserved ...

Страница 2: ...I General Description Describes the fundamental protocol parameters and the data elements of the SDXI protocol Also contains the description of these telegrams which are supported by all SDXI devices e g software and hardware version SDXI AXENS US1 Describes all telegrams used for the AXENS Central Unit AXCU the AXENS talking station AXTS and the Salve Clock System US1 SDXI ASx Describes all teleg...

Страница 3: ...2 3 Device Configuration 9 2 3 1 Set Baudrate U2DM d COM c BD bd 9 2 3 2 Set Remote Interface U2DM d DRI s 9 2 4 Encoder Commands 10 2 4 1 Encoder Request Value U2DM d EN e CR 10 2 4 2 Encoder Rotate Left U2DM d EN e RL CR 10 2 4 3 Encoder Rotate Right U2DM d EN e RR CR 11 2 4 4 Encoder Set Value U2DM d EN e ev CR 11 2 5 Status Commands 12 2 5 1 Request Channel Status U2DM d CS c CR 12 2 5 2 Set C...

Страница 4: ...SDXI U2 Serial ASCII Data Exchange Interface General Description V1 15 Stemin GmbH SDXI U2 Protocol Description V1 15 doc page 4 of 15 ...

Страница 5: ...ough and is controlled by an interrupt driven interface there should be no problem to handle the telegrams 1 2 Protocol Extension SDXI U2 ASCII Mode The SDXI protocol includes a second higher level protocol interface called SDXI U2 protocol which allows the user to communicate and control the device with a simple terminal program using an ASCII based interface language This SDXI U2 protocol provid...

Страница 6: ... 2 3 Object Code EN Encoder COM ComPort variable 1 3 Object Address 0 255 variable 2 3 Command Code Object Property Command Codes RR encoder turn right RL encoder turn left MU mute channel BD Baudrate variable 1 Operator set operator request operator variable 1 6 Parameter 1 optional 32767 32767 variable 1 Seperator optional variable 1 6 Parameter 2 optional 32767 32767 variable 1 Seperator option...

Страница 7: ...encoder value ev 0 255 encoder value setting according to the actual system control selection system control selection scs value selection of the system control encoder 1 LEVEL 2 TREBLE 3 BASS 4 LOW CUT 5 LIMITER 6 AUTOMIXING 7 DUCKING 8 NOM ATT 9 LAST MIC ON 10 PAN BALANCE Mute State mut 0 1 Mute state of the according encoder channel 0 encoder channel not muted 1 encoder channel muted ON LED Sta...

Страница 8: ...5 Digital Automixer 4 2 2 p3 OEM Version reserved U2DM1SW 121 5 0 CR p1 SW Version 1 21 p2 Application Digital Automixer 4 2 2 p3 OEM Version 0 reserved 2 2 2 Hardware Version U2DM d HW CR Dir Telegram Description U2DM d HW CR This command requests the actual hardware version info of the device U2DM1HW CR U2DM d SW p1 p2 p3 p4 p5 CR Device returns the hardware version info p1 HW Version p2 FPGA Ve...

Страница 9: ...y no Databits 8 Stopbit s 1 U2DM1COM0BD 1152 CR p1 Baudrate 1152 the new device baudrate is set to 115200 Baud no device response no device response 2 3 2 Set Remote Interface U2DM d DRI s Dir Telegram Description U2DM d DRI s CR This command enables or disables the remote interface of the device For a remote control of the device it is necessary to send this command first to enable the complete r...

Страница 10: ...turns the settings of the encoder 2 scs System Control Setting Level 1 ev encoder value 26 mut encoder channel not muted onl ON LED is Off pkl Peak LED is Off 2 4 2 Encoder Rotate Left U2DM d EN e RL CR Dir Telegram Description U2DM d EN e RL CR This command executes a rotate left action at the selected encoder e selected encoder U2DM1EN2RL CR Executes a rotate left action at encoder 2 U2DM d EN e...

Страница 11: ...s of the encoder 2 ev 26 U2DM1EN2RL CR Executes a rotate left action at encoder 2 U2DM1EN2 1 25 0 0 0 CR returns the settings of the encoder 2 ev 25 2 4 4 Encoder Set Value U2DM d EN e ev CR Dir Telegram Description U2DM d EN e ev CR This command sets directly a new value to the encoder e selected encoder ev new encoder value U2DM1EN2 32 CR sets encoder 2 to value of 32 ev 32 U2DM d EN e scs ev mu...

Страница 12: ...sends a single channel status telegram for each channel c channel has no effect t time period t 100 ms 0 disables the automatic update 1 15 U2DM1CS1 5 CR Set the automatically update period for the channel status us set to 5 100 ms 500 ms U2DM d CS c cl mut onl pkl CR returns the status of the selected channel see Request Channel Status command U2DM1CS1 13 0 0 0 CR Delay t 100ms U2DM1CS2 18 0 1 0 ...

Страница 13: ... Value command U2DM1EN2 1 32 1 1 0 CR Device returns the setting of encoder 2 mut encoder is muted U2DM1EN2MU 0 CR Clears the mute state of encoder channel 2 U2DM1EN2 1 32 0 1 0 CR Device returns the setting of encoder 2 mut encoder is not muted 2 5 4 Request Device Status U2DM d DS CR Dir Telegram Description U2DM d DS CR This command requests the status of all channels from the device U2DM1DS CR...

Страница 14: ...ls within one telegram t time period t 100 ms 0 disables the automatic update 1 15 U2DM1DST 10 CR Set the automatically update period for the device status to 10 100 ms 1000 ms U2DM d DST csx csx csx csx CR returns the device status of all channels see Request Device Status command U2DM1DST 00010 04010 00010 00010 00010 00010 00000 02010 00000 00000 CR Delay t 100ms U2DM1DST 00010 04010 00010 0001...

Страница 15: ... deactivates the input channel Force Off and flashes the according logic output pin with a frequency of 2 Hz e g for an LED indicator ts channel number 1 4 st talks station state 0 OFF 1 ON 2 REQUEST TO SPEAK Logic Out Pin toggles with 1 Hz optional p1 disables or enables the VTS function 0 Logic input pin is active 1 Logic input pin is not longer active Note After sending this command the input s...

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