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differences RK512 Protocol & 3964 & other possible protocol for cp 341 & J bus communication
Created by: sorooshi at: 9/16/2012 2:30 PM (5 Replies)
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| 9/16/2012 2:30 PM | ||||
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Posts: 19 Rating:
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Last edited by: CS Moderator at: 9/17/2012 12:07 AMnew subject after splitting from /tf/WW/en/Posts/17981#top |
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| 9/16/2012 7:38 PM | |
Joined: 9/27/2006 Last visit: 3/20/2025 Posts: 12344 Rating:
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Hello soroochi; This page of FAQs on protocols for the CP 341 should give you enough information to start your research: https://support.automation.siemens.com/WW/llisapi.dll?query=3964r&func=cslib.cssearch&content=adsearch%2Fadsearch.aspx%3Ftab%3D2&lang=en&siteid=csius&objaction=cssearch&searchinprim=_searchinprim_&nodeid=99&x=16&y=8&cssearchengine=NEW&x=0&y=0 Hope this helps, Daniel Chartier Edit: Once you have opened thewebpage above, click on the FAQ link to see the list I had planned on showing you. D.C. |
Last edited by: dchartier at: 9/17/2012 2:17 PM |
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| 9/27/2013 12:18 AM | |
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Posts: 2 Rating:
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Hello guys, Can you send me program sample for communication J BUS to ccr ( light lamp controler ). thanx and kind regards, cantong |
| 9/27/2013 9:02 PM | |
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Joined: 9/27/2006 Last visit: 3/20/2025 Posts: 12344 Rating:
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Hello cantong; What platform are you using, S7-300, S7-1200, S7-200... for the Modbus master? What interface: for the S7-300 it could be a CP 341, a 1SI module; for the s7-200 you would require a Modbus library. What physical layer, RS-232, RS-485, possibly Ethernet (Modbus TCP). What slave exactly are you connecting to, and do you have a manual with its Modbus mapping (location and number of rehgisters you want your Modbus master to read or write to)? Until you have determined these selections, it is very hard to give you the requested reply. I would suggest you start by reading this well-crafted presentation of modbus, by our friend smiffy: Modbus General Description It will help you understand what is required for a general data exchange over Modbus, and what isneeded to create this communication link on a Siemens PLC. Once you have a grasp of the basics, you can use the Search box at the right of this page to look for "Sample Modbus programs" for your master's platform. Hope this helps, Daniel Chartier |
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