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2 identical systems with 2 Scalance X204-2

7/29/2014 5:46 PM	Rate (0)
Ton Verra Gold Member Joined: 4/20/2007 Last visit: 11/7/2024 Posts: 728 Rating: (43)	Hi all, Two questions in one. I have got two identical S7 300-F systems with Comfort panels and X204-2 Scalance switches. All systems have unique IP adresses. My client installed a fiber optic "profiBUS" cable between them and it is not working. 1. since the cable fits the plugs on the scalance switch, I assume it should work, even tho it is not a profibus connection. I recon the cable is just the wrong color. Do I assume right? 2. do I have to do anything in my scalance switch to active the 2 "optic" ports? I thought I could just tie my two switches together. Am I assuming this right? Any help would be great! Ton

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7/30/2014 8:40 AM	Rate (1)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, Could you specify the order number of ther used cable? Because, even with Profibus OLM, you can choose for multimode, monomode or plastic fiber. And they have all BFOC (ST) connectors ... The X204-2 expects multimode fiber. By default, all ports are active, also the FO ports. Be just aware that you have to cross the 2 fibers of a pair (there is a send and receive, look at the symbols on the switch.) The sender must arrive on the receiver of the remote switch.
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7/30/2014 9:21 AM	Rate (0)
Ton Verra Gold Member Joined: 4/20/2007 Last visit: 11/7/2024 Posts: 728 Rating: (43)	Hi! And thank you! The cable used is6xv1821-0bn20, which is a plastic fiber optic cable I guess? So this won't work?

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7/30/2014 12:52 PM	Rate (1)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, Correct, palstic fiber will not work with the standard X204-2. Switches that support plastic fiber fave a "P" in their naming. The standard X204-2 switch requires multimude glass fiber, with the data specified in theOperating instructions: http://support.automation.siemens.com/WW/view/en/63203633 at page 65.
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This contribution was helpful to 1 thankful Users Ton Verra

7/30/2014 7:08 PM	Rate (0)
Ton Verra Gold Member Joined: 4/20/2007 Last visit: 11/7/2024 Posts: 728 Rating: (43)	OK, thank you so much! Just one more question, as a *** on using fiber optics and related equipment, should I see a light coming out the "out going" ports when nothing is connected but RJ45 plugs? I have a couple OLM modules as well, and there I do see this light..

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