long distance serial communication

[Waqas_MicroSolutions]

Hi guyz,
I have to take different measurements( from Load Cell, Temp, rpm..etc..) at a distance of about 30 feet. I'm about to measure those readings through ADC channels in PIC Microcontroller and then I'll send them to another microcontroller at 30 feet, serially(rs-232) to display those readings on large
7-Segments, Separately.
My Question is, that MAX232 IC is capable of sending data serially over distance of about 30 feet, and then another MAX232 can recover and then provide readable signal to MicroController at TTL level?
Is it possible? or else what you guyz recommend ?
Thanks ion anticipation..

 

[Naveed Ahmed]

Hi Waqas,

There is a distance limitation for Rs232 standard, this distance depends on data-rate(baudrate). You can send and receive data through MAX232 for 30 feets (9.14 meters) if you keep your baudrate 9600 bps.

Refer to the given link for baudrate and distance details.
Lengths of serial cables

If you want higher baudrate then you need to use RS-485 standard whose range can go

---------- Post added at 15:35 ---------- Previous post was at 15:34 ----------

RS485 range is till 1 kilo meters.

Naveed

 

[FvM]

It is capable at reasonable baud rates (<= 9600 baud). But RS-485 is better.

 

[Waqas_MicroSolutions]

Well, 9600 baud rate is Ok, my problem is not rs232 standard, I just want to know that will MAX232 IC (Maxim) will work for that distance 30 feet???
Or else if I use MAX485 IC, what kind of changes I need to do in Soft? Because I have written code for using it with MAX232 IC...

 

[FvM]

I did answer your question before.

 

[Waqas_MicroSolutions]

I did answer your question before.

Well, Thank you...!
I'll let you know if there would be any problem implementing it.....

 

[Waqas_MicroSolutions]

It is capable at reasonable baud rates (<= 9600 baud). But RS-485 is better.

Thatnk you, it Worked...