hi,
May i ask for what purpose you are trying to read a meter? Also, are you wired up for 3 wire (+,-,com) or 5 pin (+,+,-,-,com)?
I've tried to connect to a meter using 3 wire method where you jump the + to the + and the - to the - to make two inputs and the ground as the com.
May be i'm doing it wrong?
You will want to use data to server method to extract data.
I use {"ts":%t, "values":{"%r":%a}}
although there is a firmware bug in the rut955 which misses out a ] at the end of the json, making it invalid anyway.