J2 - thumbwheel multiplexer port (jthw port), J3 - machine connector (jmach1 port), J4 - machine connector (jmach2 port) – Delta Tau PMAC2A-PC/104 User Manual
Page 41: J8 – handwheel / pulse and direction port \(jhw, Tb1 – power supply terminal block \(jpwr connect, Connectors and indicators, Tb1 – power supply terminal block (jpwr connector)
