Qiao solves the 0026 fault of KONE 3000 elevator - News - Global IC Trade Starts Here.

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A KONE 3000 elevator that had just taken over, because of a sudden power outage during a normal operation, completely broke the armpits, the fast and slow cars are not coming, even the switch door does not come, the fault display 0026, the V3FOK light does not light. Since we have agreed with the user in advance, the user will ask the KONE company to solve the problem (we didn't want to take over the hot potato). But when the user finds KONE, KONE's answer is to take the money, 2000 ocean, can you solve it completely? A: Impossible! The user is not willing, stalemate for more than a month. I was recently solved by myself. Below I will announce the method and the following.

First, the problem analysis

How can a good elevator be like this? And KONE people can easily solve it without moving anything. Just plug in the debugging tool and press a few keys to be OK. What can this change? It can only change the data in the memory, and the data represents the various settings of the elevator. As long as the data is changed, the settings are correct and the elevator is OK.

Second, the solution

Based on the above analysis, I have come up with a solution to modify the memory data with a universal programmer. However, 3000 memory is 32K NVSRAM, there are 32768 bytes, how do you know which byte is set in this byte? What value is the correct setting in this byte? I think of a normal elevator of the same type, sure This setting is included, definitely in the corresponding memory address, and its value is definitely correct. In theory, you can find out by comparing them. But the memory contains too much content, from the floor to the hoistway information, from the door opening time to the running curve, even the elevators in the same station are different values. It is very difficult to find a specific value from many different values. What should I do? At first I thought of using the preferred method, that is, using 32768 by 0.618 to get 20250 (4F1AH), the first 20250 data in the good ladder (0000H~4F1AH) was tested in the corresponding memory area of ​​the bad ladder, and then the V3FOK of the elevator was seen. Whether the light is on. If it is lit, this setting is in the first 20250 bytes (0000H~4F1AH). If it is not lit, it means that it is in the next 12518 bytes (4F1AH~7FFFH). Repeat the above steps repeatedly, 19 times to find out the culprit. Modify its value according to the contents of the ladder, everything is OK! At this point, the user and our problems for more than a month have finally been completely solved!

Postscript: In practice, I did not use the preferred method, but simply divided 32768 by 2 to get 16384 (4000H). Since 32768 is 2 to the 15th power, each test can determine the range of N-1 power, so 15 trials will be confirmed. It took about an hour to share. Copying copies of binary files is cumbersome and not everyone can operate