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ET-200S CPU -> ET200S Remotes

7/31/2014 5:40 PM	Rate (0)
notausp Posts: 10 Rating: (0)	Hi everyone! In this datasheet: https://mall.industry.siemens.com/DatasheetService/DatasheetService?control=%3C%3Fxml+version%3D%221.0%22+encoding%3D%22UTF-8%22%3F%3E%3Cpdf_generator_control%3E%3Cmode%3EPDF%3C%2Fmode%3E%3Cpdmsystem%3EPMD%3C%2Fpdmsystem%3E%3Ctemplate_selection+mlfb%3D%226ES7151-8AB01-0AB0%22+system%3D%22PRODIS%22%2F%3E%3Clanguage%3Een%3C%2Flanguage%3E%3Ccaller%3EMall%3C%2Fcaller%3E%3C%2Fpdf_generator_control%3E what is the parameter that points to me the maximum number of ET200S remote panels I can connect through Ethernet cable, in a star topology? Each arm of my star have 5~6 remote ET200S (in series) Thanks!
notausp Posts: 10 Rating: (0)
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8/2/2014 10:23 AM	Rate (0)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, From this datasheet (IM151-8 PN/DP = ET200S PN CPU): http://support.automation.siemens.com/WW/view/en/42361392/td Under "Profinet IO Controller" that the CPU supports max 128 I/O devices in standard RT mode. The default I/O update time is 2 msec. To lower the load on thenetwork, you can adjust (slow down)the I/O update cycle of the I/O devices to values matching the real application needs. If for instance 32 msec is enough to react properly towards the process, the bus load will decrease by a factor nearing 16.
	Last edited by: jklm at: 8/2/2014 10:24 AM Best regards jklm Suggestion was helpful? Feel free to rate it.
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