112222....2222....5555 Wiring for PMIU unitThis section is common to all PMIU unit.Power supply cable connectorThis is detachable terminal block.Connecting of power supply connector is shown right.Insert and pull out connector straight. When force isdiagonally applied, connector is damaged.COM1 port DB9pin female connector. If you use RS485 of this port as 2 wire connection, short 4pin & 5pinand connect to A line (or +, positive), short 6pin & 7pin and connect to B line (or -, negative) .All models has this port.COM2 port DB9pin female connector. This port supports only RS232C communication.TR PMIU0300L/A has not this port.USB SLAVE port USB Standard B type female connector. This is used to connect PMIU unit to your PCfor programming and monitoring. All models have this port.USB HOST port USB Standard A type female connector. This is used for USB Host function and USBlogged data upload. TR PMIU0300L/0500L has not this port. Refer 9.1, 9.5.P24V0VEarthInsert