I'm struggling to work out how to enable the External mode for the digital output for the PM3255. Is this dependent on the firmware or possibly some other setting? I've been through the configuration on the meter itself and only get 3 options for both DO1 and DO2. Any ideas out there?
PM3255 firmware field upgrade feature will be available, only for the meters which will be manufactured from March 2017.
I have a power meter pm3255 with firmware v01.05.0 , I have enabled external control for digital outputs. I am failing to write to the meter getting response 3000.
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