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8/6/2012 10:24 PM | |
Joined: 9/27/2006 Last visit: 9/25/2024 Posts: 12283 Rating: (2685) |
Hello Marko; How familiar are you with Modbus RTU? The Sentron PAC 3100 has a RS-485 interface dedicated to Modbus RTU exchanges, so best we start with that clarification.For yourgeneral information (or some quick refreshment) here is an excellent post from our forumfriend smiffy explaining the basics of Modbus RTU: Modbus General Description Also,what level of experience do you have with Siemens programming and PLCs? Knowing this will help us determine howwe can help you best. Just for starters, you willneed a serial communication module for your ET 200S CPU; this would be a 1SI module; the modelshown here issetup for Modbus RTU, using RS-485: http://support.automation.siemens.com/WW/view/en/20270713 Here is a link to the manual for the 1SI module: ET 200S 1SI manual and here is a link to the PAC 3100 manual, including a Modbus mapping (available variables for Modbus exchanges, including the offset address of each one; see the appendices): Sentron PAC 3100 manual
PAC 3100 and sample program for CP 441-2 (S7-400): Modbus communication with Sentron PAC3100 RS485 Module to S7 400 Communication with two quary sample program
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Last edited by: dchartier at: 8/6/2012 10:26 PM |
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1/31/2017 10:52 AM | |
Posts: 88 Rating: (4) |
Dear All, Please can any one share sample program for communication between ET200 SP and PAC 3100 using modbus. Regards Afeef |
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