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PC USB Adapter not work on 810D

6/7/2007 5:19 PM	Rate (0)
atharva Bronze Member Joined: 2/27/2007 Last visit: 3/30/2022 Posts: 79 Rating: (5)	Hi, I have a new PC USB adapter 6ES79792-OCB20-OXAO SW1.2 HW03 FW1.2. I have used it S7 300 PLC cpu working Ok but I unable to use for 810D CCU3. I think it doesn't get power through NCU. What is the way out of it. It there any attachement is available. thanks

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6/7/2007 6:16 PM	Rate (0)
SteveJ Posts: 328 Rating: (29)	Dear Sir For the adapter to work correctly with 840D/810D, You must supply the 24v to the NCU/CCU from an external source, This is acheived by connecting +24V(P24) to pin 20/21 of X121 and 0v(N24) to pin 1/2. This will allow your adapter to work on slow MPI (187kbps) and Profibus DPinterfaces. It does not, however, work on High speed MPI (1.5 mbps) X101of NCU For further information, please see DOConCD/WEB https://www.automation.siemens.com/doconweb/content.asp?item=11641&cd=sinumerik_0107_e&scope=all Best regards SteveJ
SteveJ Posts: 328 Rating: (29)
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6/8/2007 2:06 PM	Rate (0)
atharva Bronze Member Joined: 2/27/2007 Last visit: 3/30/2022 Posts: 79 Rating: (5)	Thanks, SteveJ I am thinking in another way but it's good information. I will try p24 to pin7 and m24 to pin2 which will go only adapter not to NCU. thanks a lot

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