FM-3 Programming Module Reference Manual

Setup NVM View

At power-down, parameters can be saved to Non-Volatile Memory (NVM). See the "How Communications Work" section of the "Operational Overview" chapter for more details. In PowerTools Pro, you can customize which parameters will be saved in non-volatile memory.

Figure 39: Setup NVM View

NVM Warning: Assigning parameters to NVM could shorten the life of your FM-3 or FM-4! The Non-Volatile memory list displays the parameters that will be saved after power down. A command to store these parameters into the NVM is given to the module whenever a parameter on the list changes value (via a program or a communications network). Currently the NVM in the FM-3 will accept at a minimum, 1 million writes before the FM-3 ceases operation.

Therefore, do not add parameters to the NVM list if these parameters will be changing more than an average of 1 time every 30 seconds.

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Emerson FM-3 manual Setup NVM View