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RS485 + Modbus

 
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neurus



Joined: 31 Mar 2004
Posts: 23
Location: Switzerland

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RS485 + Modbus
PostPosted: Wed May 26, 2004 8:18 am     Reply with quote
hi

I want to connect 2 PIC's per RS485. As protocoll I want to use the modbus. The problem is, that I don't have idea, how works the modbus protocoll.

I'm working with CCS Compiler and 18f252. In the example folder from CCS I have found the file rs485.c. Can anyone to explain me, how doe's the file rs485.c work? or maybe post some Code(example)? Which Protocoll has this file(modbus?)?

Thanks, Pablo.

PD.: sorry for my english
SherpaDoug



Joined: 07 Sep 2003
Posts: 1640
Location: Cape Cod Mass USA

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PostPosted: Wed May 26, 2004 8:24 am     Reply with quote
Search this BBS for "modbus" entries authored by "Neutone" and you will find lots of examples.
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