SINUMERIK 840D, The digital NC system for highly sophisticated tasks
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SIMODRIVE 611 digital - The SIMODRIVE drive system provides numerous functions for feed and main spindle applications with analog and digital control.
URL: http://www.automation.siemens.com/mc/mc-sol/en/65fff158-e1b7-4968-b27b-d08d62f3cff2/index.aspx
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