Lpc2000

From: "Saravanakumar S" <Saravanakumar.S@...>
To: <lpc2000@yahoogroups.com>
Sent: Tuesday, April 04, 2006 12:30 PM
Subject: [lpc2000] How Can I check the RS485 Communication?


> Hi all,
>        I am newbie to this field.      I have a Serial device,it is based
> on RS485 communication.
> It tranmits the data,but i didn't get any data.So that,I want to check
> whether it is transmit the data or not?
> I don't know how to check the data.
>
> Is there any tool is available  to monitor RS485 data [like Teminal,&
> Hyper terminal tool(RS 232 communication)]
>
>
> Can you please tell me how to check the data?

You could make an interface converting from RS-485 to RS-232, it's just a 
couple of chips. You would then be able to use a terminal program for 
testing.

Leon 

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        Subject:        Re: [lpc2000] How Can I check the RS485 Communication?


----- Original Message ----- 
From: "Saravanakumar S" <Saravanakumar.S@...>
To: <lpc2000@yahoogroups.com>
Sent: Tuesday, April 04, 2006 12:30 PM
Subject: [lpc2000] How Can I check the RS485 Communication?


> Hi all,
>        I am newbie to this field.      I have a Serial device,it is 
based
> on RS485 communication.
> It tranmits the data,but i didn't get any data.So that,I want to check
> whether it is transmit the data or not?
> I don't know how to check the data.
>
> Is there any tool is available  to monitor RS485 data [like Teminal,&
> Hyper terminal tool(RS 232 communication)]
>
>
> Can you please tell me how to check the data?

You could make an interface converting from RS-485 to RS-232, it's just a 
couple of chips. You would then be able to use a terminal program for 
testing.

Leon 

---
[This E-mail has been scanned for viruses but it is your responsibility 
to maintain up to date anti virus software on the device that you are
currently using to read this email. ]



 
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        Subject:        Re: [lpc2000] How Can I check the RS485 Communication?


Quoting Saravanakumar S <Saravanakumar.S@...>:
>        I am newbie to this field.      I have a Serial device,it is 
based
> on RS485 communication.
> It tranmits the data,but i didn't get any data.So that,I want to check
> whether it is transmit the data or not?
> I don't know how to check the data.

Put an oscilloscope on the line.  That will verify that you have 
signals of the
correct voltage and speed.

After that any number of commercial 485-232 converters or even a handbuilt 
one
will do just fine for monitoring the stream on a PC with a standard serial
capture program (Almost anything is better than hyperterminal).  Al least 
as
long as you are using a standard baud rate.

Robert



 
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