PIMs go online and offline when other PIMs are connected.

PIMs go online and offline when other PIMs are connected.

There are a few items that can cause multiple PIMs to go on/offline.

  1. Verify that each PIM in the communication line have unique address.
  2. PIMs cannot be wired in a star configuration, they must be daisy chained.
  3. Verify the controller is set to communicate at 9600 baud.

After verifying the settings above we need to make sure your high-door / low-door values are configured for each PIM.

Solution: In the PIM configuration there is a lo and hi value. When communicating two or more PIMs in a communication line it will be necessary to set the PIM lo and high door values as follows.

First PIM value for lo is 0 high 16

Second PIM value lo 17 high 32

Third PIM value 33 high 49

So each PIM has different  lo\ hi values 

Once you have set the High-door low-door values set the PIMs should stay online.


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