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From: Edmund on 24 Mar 2010 12:54
Hi,

Is there a way to send the world "hello" in simulink from a serial send block? I am asking since it can only send binary data, so how can I use simulink to send a word such as 'hello' rather than a number to an external device connected via USB?

thanks
Edmund
From: Shankar on 24 Mar 2010 17:10
Hi Edmund,

The Serial Send block sends only binary data. You can use the Query Instrument block to send a command to the device/instrument that you have connected and receive data.

I would like to know what you are trying to achieve before suggesting a solution. If you could explain more on your application, that will be helpful.

Thanks
Shankar

"Edmund " <azuro20025(a)hotmail.com> wrote in message <hodg3d$db7$1(a)fred.mathworks.com>...
> Hi,
>
> Is there a way to send the world "hello" in simulink from a serial send block? I am asking since it can only send binary data, so how can I use simulink to send a word such as 'hello' rather than a number to an external device connected via USB?
>
> thanks
> Edmund
From: Edmund on 24 Mar 2010 17:38
"Shankar " <ssubramaREMOVETHIS(a)mathworks.com> wrote in message <hodv3s$pie$1(a)fred.mathworks.com>...
> Hi Edmund,
>
> The Serial Send block sends only binary data. You can use the Query Instrument block to send a command to the device/instrument that you have connected and receive data.
>
> I would like to know what you are trying to achieve before suggesting a solution. If you could explain more on your application, that will be helpful.
>
> Thanks
> Shankar
>
> "Edmund " <azuro20025(a)hotmail.com> wrote in message <hodg3d$db7$1(a)fred.mathworks.com>...
> > Hi,
> >
> > Is there a way to send the world "hello" in simulink from a serial send block? I am asking since it can only send binary data, so how can I use simulink to send a word such as 'hello' rather than a number to an external device connected via USB?
> >
> > thanks
> > Edmund

Hi Shankar,

Thanks for the response.

This is my system, I am using Simulink to get an image from camera, get the position of a ball via pixels, then convert these pixels into height in cm and according to this height ht1 I am getting the servo angles as shown below:

function u= fcn(ht1)

s_angle=((11.06)*(ht1-5))+1918;
x=ceil(s_angle);

u=uint16(['']); % where #0Px must be.

variable x will have a value between 2250 - 1918.

I am controlling the servo motor via servo controller SSC 32 in which requires input such as #0P1500 to turn the servo motor. When I was using Matlab I used the following commands to turn the servo motor:


s_angle=((11.06)*(ht1-5))+1918
x=ceil(s_angle)
temporary=sprintf('#0P%d',x)
fprintf(S,temporary) % where S is port deceleration

Now since Simulink does not allow characters to pass through one block to another how may I send the data of the character values #0P1500 in which the servo controller will recognize.

If I do uint('#0P1500') for example I get an output of u =
35 48 80 49 53 48 48

these values can not be recognized by the servo controller as servo angles since #0 represents the servo channel and P1500 is the position of the servo.

I hope I explained myself in a way that you may understand :).
Thanks again
Edmund
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