11 print command and/or reset of alarms (pin 11), 13 push to cal (pin 14), 14 +v ext (pin 15) – Cooper Instruments & Systems DFI INFINITY Digital Force Indicator/Controller User Manual
Page 72: 15 sp1 (pin 16), 16 sp2 (pin 17), 17 al1 (pin 18), 18 al2 (pin 19), 19 rtn ext (pin 20)