Elevator Forum

What code is it flashing?

What happened...Generically speaking, an EEPROM is sometimes used not just to store parameters you are manipulating, but also sometimes it is preloade...

Another thought...It could also be the top floor safety limit plate that is bolted to the right rail is too low. Now, if the elevator was working corr...

The mechanical limit switches for the top and bottom floors are safeties only. They are there only to keep the elevator from overrunning the bottom fl...

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What problem is it experiencing?

Is it the elevator or a lift?

I had a look at some of those documents. In this one...https://www.cmco.com/globalassets/inriver/resources/cs00407-rv12.pdf...on PDF page 98, there is...

Yes, exactly. If one of the bits inside the EPROM ends up changing, the calculated checksum won't match the stored checksum.Now, there are finer point...

Maybe and maybe not.If the chip is electrically damaged, the reader detect that and tell you.If the data inside is corrupted, such that a "1" is now a...

From my software engineering experience long back, many times you will find that an EPROM is socketed. Sometimes there is oxidation on one or more leg...

As Montana says, you can easily hurt, maim or kill yourself. If you aren't completely comfortable around things like this, and have a healthy respect ...

First caution is that doing stuff on any elevator can kill or maim you. Even if you are handy or an advanced DIY type person, this isn't something to ...

Do you have the schematics?

Good job!