5/11/2012 9:06 PM | |||
Posts: 72 Rating:
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Dear
Is you can use direct PI/PO as to read from drive. But in this case you have to send parameter address via PI to drive from which you want to read the value & in reply to that you will get the PO from drive to PLC with the value of that parameter. let's look at this situation: 1)You have a Micromaster 440, with a Profibus comm. module inserted and parameters set for enabling Profibus. From the Micromaster Profibus Optional Board manual: see http://support.automation.siemens.com/WW/view/en/6586565 Communication board parameters The following parameters must be set to start up the PROFIBUS optional board: Parameter Content P0918 PROFIBUS address P0700 Fast selection command source P1000 Fast selection frequency setpoint r2050 Process data setpoint source (BICO) P2051 Process data actual values (BICO) P2041 Communication board functions P2040 Process data telegram failure time P0927 Modification source for parameters r2054 Communication board diagnostics |
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