TM-273245 Page 46 S-74 MPa Plus
Receptacle ValuePin
RC21 1 Gun motor 0−24 volts DC reference to RC21−2
2 Gun motor 24 volts DC
3 Gun motor tach reference +5 volts DC
4 Gun motor tach common
5 Gun motor tach 0 or 5 volts DC (PC1 motor control board RC1−1 to RC1−16)
6 Push-pull gun trigger +15 volts DC
7 Push-pull gun trigger 15 volts DC when push-pull gun is triggered
8 Gun command reference +5 volts DC
9 Gun command common
10 Gun command pot 0 − 5 volts DC reference to RC21−8
11 Gun sense 2.7V for AlumaPro Plus reference to RC21−14
12 RS485A
13 RS485B
14 Gun command common
RC100 1 Chassis ground
. No testing required for remaining plugs and receptacles.