12/4/2019 8:36 AM | |
Posts: 22 Rating: (0) |
Dear Sir, we have cnc machine which has 840D NCU Unit. After starting of cnc machine HMI shows error 120202 - waiting for a connection to the NC/PLC. Also error observed in NCU unit. Attachment provided for your information. Now question is 1) is its NCU unit is faulty or any other issue? 2) Is any role of NCU Battery for this error? ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 12/04/2019 09:03:56New subject after splitting |
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12/4/2019 9:35 AM | |
Joined: 4/23/2010 Last visit: 12/31/2023 Posts: 8092 Rating: (877)
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Hello, From the attached snap, it signifies. NCU +5 Volt is missing, also NCK watchdog is activated during start up. Please share more information like was this machine down for long time or recently replaced NCU battery etc. etc. Please confirm you have valid NC/PLC data back up. If yes, check NCU battery voltage. Battery is fitted at bottom of NCU box. Please refer attached sheet for more information. Please clear NC PLC data & check if NCU seven segment displays number 6 & POK LED lits GREEN. If so, it means NCU is OK & you can try by reloading backup. If after clearing NC/PLC data, NCU does not display number 6, you need to get your NCU test. HTH. P.S. - Please refer attached zip file having information of battery replacement & NC/PLC data clearing & reloading information. Attachment840D battery replacement & data.zip (212 Downloads) |
Last edited by: PISCEAN 2010 at: 12/04/2019 09:36:42 |
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12/7/2019 4:44 AM | |
Posts: 22 Rating: (0) |
Dear sir, Is it possible to see PLC Ladder on HMI for cnc with 840D NCU and 840D HMI? Ex. for emergency. Pranjal |
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