The Trend Memory Card collects histroical data for RV or PV for each slot. The memory is volatile, so loss of power clears data stored. Memory holds the last 72 hours of information that can be obtained by PAD. The stating address must be strapped at J2, jumpers must be placed at 5 and 6.

 
     1  2  3  4  5  6  7   
     o  o  o  o  o  o  o
                 |  | 
     o  o  o  o  o  o  o

An LED is provided at DS1 for indication that trend data is being accessed.