1/20/2024 12:31 PM | |
Joined: 1/2/2024 Last visit: 4/9/2024 Posts: 1 Rating: (1) |
Dear experts, I need your help as I cannot solve a problem on my milling machine with 840D: Our HURON EX-C milling machine was only MMC + NC/PLC enabled (no power part, i.e. standby mode). Then there was an emergency blackout of the power grid (missile attack on an electrical substation in Ukraine). When the electrical network was restored, we turned on the machine, then the MMC reported the error 120202 "wait for connection to NC/PLC" (see photo 1). Description of the problem: 1. MMC reports error 120202 (no communication with NC/PLC). 2. The data of the MMC103 (PCU50) and NCU573.3 versions are as follows (see photo 2, these data are taken from the photo archive). 3. NCK shows the following state of the LEDs: (see photo 3). I followed the recommendations I found in this forum: 1. I checked the connection of the MPI cable - ok, the MMC to NC/PLC communication is happening both on the mmc side and on the NCK side, judging by the oscillograms, but the error 120202 is present. Also turned on the machine with the removed battery in the NCK and then put it back in place, but there is no result. The supply voltage is 24 V DC - present everywhere and normal. 2. Also performed NCK and PLC reset actions using switches S3 and S4 - no result. 3. Next, I followed the recommendations for removing the PLC module from the NCK board, this also did not help, it even got worse because the 7-segment indicator already shows the number 8 and the LEDs all light up constantly and at the same time. But at the same time, I made a mistake in that I removed the DRV module, then put it back and turned on the machine. The status has changed to number 8 (see photo 4). 4. Is it possible that I could damage the flash memory by my wrong actions? If so, then help - how to restore the start-up to flash. Any help would be helpful. Thanks in advance. ------------------------------------------------------------------------------------------ Attachment840D-error 120202.pdf (306 Downloads) |
Last edited by: Jen_Moderator at: 01/22/2024 11:11:54New subject after splitting. Text formatting optimized. |
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