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in 840D, what’s the different from NCK inputs/outputs and its PLC inputs/outputs?

6/20/2014 11:48 AM	Rate (0)
Jackie114 Posts: 71 Rating: (0)	Hi, all. I was wondering what’s the different from NCK inputs/outputs and its PLC inputs/outputs, in 840D? And what’s the different from fast NCK inputs/outputs and normal inputs/outputs? Could you give me some examples? Thanks a lot.
Jackie114 Posts: 71 Rating: (0)	Last edited by: Jackie114 at: 6/20/2014 11:53 AM Last edited by: Jackie114 at: 6/20/2014 11:49 AM
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6/20/2014 2:20 PM	Rate (0)
MBA Gold Member Joined: 3/19/2006 Last visit: 4/29/2024 Posts: 594 Rating: (78)	NCK inputs / outputs read / write in the IPO cycle PLCinputs / outputs read / write dependence on PLC cycle https://www.automation.siemens.com/doconweb/content.asp?item=7778&cd=sinumerik_sinamics_03_2013_e&scope=all

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6/23/2014 9:31 AM	Rate (0)
Jackie114 Posts: 71 Rating: (0)	Thanks. But it said: The SINUMERIK 840D sl hardware has three 14-pin I/O interfaces X122, X132 and X142 onthe NCU on-board. Only X142 is available as a fast NCK I/O. and then there is a table: Table 1- 1 Maximum number of digital and analog NCK I/Os Total NCU on-board External NCK I/Os Digital inputs: 36 4 32 Digital outputs: 36 4 32 Analog inputs: 8 - 8 Analog outputs: 8 - 8 so if the max number of NCU on-board I/Os is 4, how about I/O interfaces X122, X132 ? Thanks a lot.
Jackie114 Posts: 71 Rating: (0)
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