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ethernet cable / pinout / wiring connection

Created by: sun1232 at: 6/12/2009 3:43 PM (9 Replies)

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10 Entries

6/12/2009 3:43 PM	Rate (0)
sun1232 Posts: 13 Rating: (1)	hi all i havesimaticindustrialethernet cable,has only 2 pairs white / orange{seperate cables } and white / blue {seperate cables } can anybody share me , the wiring connections at pin side , and also i have to use them in hub to hub connection, how could i do crossover for this cable which has only 2 pairs thanks in advance sun
sun1232 Posts: 13 Rating: (1)
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6/12/2009 5:01 PM	Rate (0)
playerslight Posts: 1064 Rating: (72)	Maybe this link will help you https://support.automation.siemens.com/US/llisapi.dll?query=industrial+ethernet&func=cslib.cssearch&content=skm%2Fmain.asp&lang=en&siteid=cseus&objaction=cssearch&searchinprim=&nodeid99=
playerslight Posts: 1064 Rating: (72)
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6/12/2009 5:14 PM	Rate (1)
playerslight Posts: 1064 Rating: (72)	here is another link that might help . check the section on connector pinning . The normal fo rethernet is pin 1` to pin 1 pin 2 to pin 2 pin 3 to pin 3 pin6 to pin pin 6 And for cross over cable pin 1 to pin 3 pin 2 to pin 6 pin 3 to pin 1 pin 6 to pin 2 one other thing i should mentions the twisted pairs are 1 and 3 the second pair are 2and 6
playerslight Posts: 1064 Rating: (72)	Last edited by: playerslight at: 6/12/2009 5:22 PM
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This contribution was helpful to 2 thankful Users sun1232 VVago

6/12/2009 8:59 PM	Rate (0)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, A hub works in half-duplex mode. If you think to use the CPU together with decentralized IO (Profinet IO), a hub will not be OK. For Profinet IO, You need a switch 100 Mbps in Full-duplex mode.
	Best regards jklm Suggestion was helpful? Feel free to rate it.
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6/12/2009 9:01 PM	Rate (1)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, When you connect a device to a switch (or a hub), you never need to use a crossed cable. A crossed cable is used to interconnect two end-devices without hub or switch.
	Best regards jklm Suggestion was helpful? Feel free to rate it.
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This contribution was helpful to 1 thankful Users VVago

6/13/2009 8:45 AM	Rate (0)
sun1232 Posts: 13 Rating: (1)	hello edr , my cpu already connected to scalance switch , from there i need to lay ethernetcable to another ETHERNET switch, {due to change in philosphy of customer , after installtion done and commissioning going on } i guess straight cable is required when one switch to another switch ?? thanks in advance sun
sun1232 Posts: 13 Rating: (1)
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6/13/2009 10:30 AM	Rate (0)
umencho Diamond Expert Joined: 3/21/2006 Last visit: 1/14/2025 Posts: 10239 Rating: (1182)	Hi, Edr already answer you in this question. When you connect a device to a switch (or a hub), you never need to use a crossed cable. You should use straight cable! A crossed cable is used to interconnect two end-devices without hub or switch. The same is story when you have two switches. You are right, should use straight cable. Regards Hristo Mihalev
	Last edited by: UMENCHO at: 6/13/2009 10:31 AM
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6/13/2009 6:25 PM	Rate (0)
Darius Platinum Member Joined: 9/28/2005 Last visit: 12/10/2024 Posts: 2957 Rating: (243)	Hello, All new and modern ethernet devices recognizes straight/crossed cables so basically you can use any type of it. As fas as I know CP-243-1 does not recognize straight/crossed cables and work with switch only using straight cables. All other S7 ethernet CP has recognition of cables. Also this site is the best about ethernet wiring http://www.ertyu.org/steven_nikkel/ethernetcables.html
	Best regards, Darius
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2/7/2015 11:50 AM	Rate (0)
s_vb Bronze Member Joined: 10/24/2011 Last visit: 3/9/2023 Posts: 257 Rating: (1)	Hello, https://support.automation.siemens.com/US/llisapi.dll?query=industrial+ethernet&func=cslib.cssearch&content=skm%2Fmain.asp&lang=en&siteid=cseus&objaction=cssearch&searchinprim=&nodeid99= The link given above is not working. Can you resend the link, please? Thanks, Shailesh
	Last edited by: s_vb at: 2/7/2015 11:54:07 AM
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9/7/2015 10:51 AM	Rate (0)
zzsrii Posts: 4 Rating: (0)	Does it works for Profinet communication? can u help? Darius Hello, All new and modern ethernet devices recognizes straight/crossed cables so basically you can use any type of it. As fas as I know CP-243-1 does not recognize straight/crossed cables and work with switch only using straight cables. All other S7 ethernet CP has recognition of cables. Also this site is the best about ethernet wiring http://www.ertyu.org/steven_nikkel/ethernetcables.html
zzsrii Posts: 4 Rating: (0)
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