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kyawmyo
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« on: April 14, 2008, 08:12:39 08:12 » |
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Hi,
Currently, I can get a lot of info about RS232 communication Via PIC, but very rare to see about RS485 and modbus. Could someone help me to get such information?
Regards,
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SKUPAD
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« Reply #1 on: April 14, 2008, 11:49:45 11:49 » |
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Attached files may help reg. MODBUS communication.
Thanks.
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Bitburner
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« Reply #2 on: April 15, 2008, 03:41:07 15:41 » |
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Here's a great reference manual/bible for most all communication standards that you may end up designing around, while uC developing. Practical Data Communications for Instrumentation and Controlhttp://rapidshare.com/files/107698221/practical_Data_comunication.pdf.htmlIt should help you quite a bit. Also, here is a good little software for testing with while you're troubleshooting MODBUS. The DEMO mode is Beg-ware, but full functionality (only limited to the number of modbus messages allowed). I'll post a keygen once I track one down. http://www.simplymodbus.ca/index.html Good luck, Bitburner |
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« Last Edit: April 15, 2008, 04:04:52 16:04 by Bitburner »
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kyawmyo
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« Reply #3 on: August 06, 2008, 03:50:05 03:50 » |
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Again!
Have you got any MikroC source code to implement modbus protocol for dsPIC chip?
Rgds.
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titi
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« Reply #4 on: October 12, 2008, 10:02:02 10:02 » |
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Hello,
Here is a exemple of implementation of Modbus RTU protocol in a PIC16F874.
This code is not from me but from WWW.MODBUS.PL
It could be a usefull to start.
Best Regard.
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waicon
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« Reply #5 on: May 20, 2009, 11:34:17 11:34 » |
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.... MODBUS communication.....
any info for Fbus that use in nokia phone ? |
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bogdantk
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« Reply #6 on: May 21, 2009, 07:01:23 07:01 » |
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Fbus a a whole different bus - electrical and data protocol.
Check the board. There were some post related to Fbus hardware.
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waicon
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« Reply #7 on: May 21, 2009, 05:52:20 17:52 » |
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M-bus and f-bus different ? interesting, would like to share data protocol ? i've little info on fbus, modified USB to serial cable to comm nokia, suscess to collect some phone version info but sent / received sms vs fbus still not working, below link collected from web http://cid-43d920b8e0e97821.skydrive.live.com/self.aspx/Public/electronic/abhi%7C_FBUS.pdf |
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Parmin
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« Reply #8 on: May 22, 2009, 12:23:17 00:23 » |
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waicon, you are off topic!
Modbus is data streaming protocol for CNC or other machine control.
M-Bus and F-Bus is Nokia's data protocol for serial communication.
totally different stuff..
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waicon
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« Reply #9 on: May 22, 2009, 04:41:18 04:41 » |
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ooh...i understand now, modbus & m-bus are differance, thanks for teching me.
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ALLPIC
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« Reply #10 on: May 22, 2009, 04:55:36 04:55 » |
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Is there any one who know modbus RTU master sample code? I am working on that but haven't success
thanks in advance
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