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3/15/2011 5:25 PM | |
Joined: 9/27/2006 Last visit: 10/17/2024 Posts: 12289 Rating: (2687) |
Hello R&R; If you are using a Y-Link we must presume you have a S7-400H redundant system as Profibus master.This is the only type of configuration that would require one. The S7-300 CPU can be setup as a slave to a S7-400H system, using a Y-Link. You will find an step-by-step guide on how to do this in the following FAQ: http://support.automation.siemens.com/WW/view/en/19951154 As a Profibus slave, the S7-300 will be able to exchange a maximum of 244 bytes OUT (to the master) and 244 bytes IN (from the master). You must take that into account in your design. Also, the areas for data exchange over Profibus-DP is inside the I/O area, and your custommer must tell you how much data,, in what format and at what addresses he will tread/write the data echange with the master. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 3/15/2011 5:25 PM |
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