My CPU module got into this state due to the empty 3 volt battery, I replaced the battery, but the problem persists.

help me

There is no one who can help me in this regard

No one has an opinion؟؟؟؟؟؟؟؟؟؟

That battery probably retained the setup parameters in static RAM and now that information is gone. There was probably a procedure to replace the battery and that replacement should have been 5-10 years ago. That procedure would retain that information during the battery swap.

Google only finds a single repair location for them. They may have the programmer required to put the correct information into that memory chip and know what that information is, but I would be looking for a new unit.

The MWM TEM is a gas engine management system. It is a plc in structure, but the program is locked, and access is only allowed for MWM trained personnel.

For obscure faults like this you should contact your generating set supplier, local MWM agent or MWM directly. Sorry but there is no sensible alternative.

If the system has a modem or internet access fitted then MWM may be able to connect remotely in the first instance.

https://www.mwm.net/en/locations/

See https://www.avat.de/en/news/news/article/tem-evo-r... Perhaps this retrofit is still available.

Edit: seems available: https://www.avat.de/en/solutions/energy-generation...

Thanks for your reply. I have a similar and identical device, how can I copy its data to this CPU

How do you do that without also ruining the other one?

You don't.

I found this file about the hardware, but I don't know much about the explanation that he put forward. Can someone check this file so that we can solve the problem of the device? Thank you.

• https://files.engineering.com/getfile.aspx?folder=10fe9df8-7d24-498a-8e8b-4

• https://files.engineering.com/getfile.aspx?folder=10fe9df8-7d24-498a-8e8b-4

Please help to solve this problem together, thank you

• https://files.engineering.com/getfile.aspx?folder=10fe9df8-7d24-498a-8e8b-4

That is only the CPU, not the memory, the interface circuitry, the software.

If there are restrictions that prevent you getting the replacement, those restrictions probably apply to most everyone on this forum. If not, then you are losing time in placing the request to MWM.

Thank you for your request...

I agree with 3DDave.

Avat are the manufacturer of the TEM hardware, but the software is MWM I think. Certainly the engine parameters and PID loops are MWMs. MWM will insist that you deal with them, although AVAT do supply some upgrades for legacy equipment. The TEM has been upgraded several times since it was introduced in the early 1990's.

Engine management systems are protected against tampering, as you could damage the engine if you made a mistake.

MWM are now a division of Caterpillar, by the way.