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Title: use Protocol::Modbus and ccs Post by: luca_l on February 11, 2008, 10:16:50 22:16 I need some suggestions to use Protocol::Modbus on pc as a master
and a pic programming with ccs for slave. any kind of help is welcome. thank you very much Luca P.S. googling I also found Java Modbus Library too. but now this is planed for a future project. ;D Title: Re: use Protocol::Modbus and ccs Post by: phu_thanh on February 12, 2008, 10:48:06 10:48 Hi luca_l
If you are familiar with Visual Basic 6. Then visit this website: http://www.modbus.pl/vb.htm You can download the Modbus RTU Master project in VB6. There also have a PIC modbus RTU slave project. However it is written and compiled with PICBASIC and HI_TECH C. phuthanh Title: Re: use Protocol::Modbus and ccs Post by: baba on February 12, 2008, 02:43:16 14:43 Hi Luca
I already done a modbus slave using a PIC16f873 and using CSS. The projects was a modbus IO, in order to received input logic signal and send out logic signal. bye. BABA Title: Re: use Protocol::Modbus and ccs Post by: bogdantk on February 13, 2008, 06:44:05 06:44 Hello Baba
Maybe you will post the project on the forum. I think it will be interesting for a lot of people. I look forward. Title: Re: use Protocol::Modbus and ccs Post by: Dembo on February 13, 2008, 09:42:38 09:42 Once I found this client/server package from FieldServer Technologies for MCC18. I havn't tried it yet, but looks useful for modbus.
http://rapidshare.de/files/38563892/modbuspw.zip.html Also some info and utilities on their site: http://www.fieldserver.com/techsupport/utility/utility.php Title: Re: use Protocol::Modbus and ccs Post by: titi on June 21, 2012, 07:55:44 19:55 Hi,
This is an implementation of Modbus Slave in MikroC with a P18F45K22. From LibStock http://www.libstock.com/projects/view/355/modbus-slave (http://www.libstock.com/projects/view/355/modbus-slave) Download File: http://www.libstock.com/projects/download/355/0/355_modbus_slave_v1.0.0.2.zip (http://www.libstock.com/projects/download/355/0/355_modbus_slave_v1.0.0.2.zip) Best regards. Title: Re: use Protocol::Modbus and ccs Post by: centiane on January 07, 2013, 08:59:44 20:59 Hi, one question.
ModBus is same RS485? In this case is posible comunication more than 100 meter. Regards Moises. Title: Re: use Protocol::Modbus and ccs Post by: allegro on January 07, 2013, 10:22:50 22:22 Hi, one question. ModBus is same RS485? In this case is posible comunication more than 100 meter. Regards Moises. If I understood your question correctly.. The modbus protocol is used a lot over rs485 twisted pair communication. Modbus is not rs485. At the expense of lower baudrate you can communicate over a long distance (>100m). Title: Re: use Protocol::Modbus and ccs Post by: Ganymed on January 09, 2013, 02:15:41 14:15 RS485 is the physical layer (Layer 1).
Modbus is a protocol on data link layer (Layer 2). Further informations you can find on http://www.modbus.org. E.g. Modbus-Specification: http://www.modbus.org/docs/Modbus_over_serial_line_V1.pdf (http://www.modbus.org/docs/Modbus_over_serial_line_V1.pdf) Title: Re: use Protocol::Modbus and ccs Post by: centiane on January 09, 2013, 04:46:36 16:46 Ok thank you.
I use RS485 for comunnication PLC and INVERTER (omron). Regards Centiane. |