Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Interfacing RS485 device with serial port.Help needed .

Status
Not open for further replies.
C

czar

Newbie level 3
Joined
Feb 16, 2008
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,317
ds75176 convert rs232 how to

hi
i am new to this field of electronics.i am presently using a sensor which has to be interfaced to the pc using RS485 protocol(I am not sure if i can call it a protocol but neway!) i need the connections of rs485 line(A(-),B(+) and GND ) with the serial port(DB9).
thanks

------
Abhishek
 

adam 4520 pinouts

you cannot directly interface RS485 line to the PC's DB9 connector. The PC's o/p is RS 232 so you will require a 232-485 converter, which basically consists of MAX 232 IC connected to the PC's com Port & the other end connected to DS75176 which is used for RS485 protocol.
https://www.dnatechindia.com/index.php/Tutorials/
 

rs-485 device

Basically right. A "poor mans" converter without MAX232 can be found in this thread I sometimes use two 1k resistors as a converter, but don't want to recommend it generally.
 

interfacing rs485 device

yes sure you need a converter

www.advantech.com/products/ADAM-4520.asp

and you need RS232 side connection for at least 2,3,5 pin numbers of DB9.or the other pins may be usefull depends on your converter and protocol(half/full duplex)

Good luck
 

adam 4520 max485 connect

thanks people for your suggestions.
I am now trying to make a 232/485 converter which uses max232 and max485.
Are there any other simpler designs you can suggest coz that will be a great help.
thanks.
------------------
Abhishek
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top