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One of two DP/DP couplers is unreachable

1/15/2020 8:57 AM	Rate (0)
DominickKow Posts: 4 Rating: (0)	I'am using PLC 1517-3 PN/DP with two couplers DP/DP 6ES7972-0AB01-0XA0 and one diagnostic repeater 6ES7972-0AB01-0XA0. My problem is that one of couplers is unreachable in configuration in TIA Portal v15.1 but repeater dont show any error... Check my documentation in the attachment. DP/DP coupler =CC2-10A2 is conected to my network and second network and is okey, but =CC2-10A1 for now is connected to only my network and is unreachable in my configuration in TIA and leds shows BF and SF. I checked adresses in configuration, dipswitches on unreachable coupler. Power is connected from one side and dipswitch PS is on. Do you have any idea what can by wrong ? Configuration in tia is the same for two couplers. Only addresses are different. Attachment couplers problem.PNG (286 Downloads)
DominickKow Posts: 4 Rating: (0)
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1/16/2020 1:25 PM	Rate (0)
Hati Platinum Member Joined: 9/21/2012 Last visit: 1/22/2026 Posts: 4859 Rating: (512)	Do you have the profibus cable connected on the correct side in the connector? And is the termination switched on?

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1/16/2020 2:49 PM	Rate (0)
DominickKow Posts: 4 Rating: (0)	Yes, profibus is connected to the correct side. Terminator is switched on on the last coupler =CC2-10A2.
DominickKow Posts: 4 Rating: (0)	Last edited by: DominickKow at: 01/16/2020 14:50:14
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1/16/2020 2:52 PM	Rate (0)
Hati Platinum Member Joined: 9/21/2012 Last visit: 1/22/2026 Posts: 4859 Rating: (512)	DominickKow Yes, profibus is connected to the correct side. Terminator is switched on on the last coupler =CC2-10A2. And you still can't see the node on Profibus? Did you check if the node is accessible? If not, then there must be something wrong with the cabling or the coupler is defect.

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