Hardware reference guide

218 35013379 11/2011
Front Panel Connections and Controls
The InterBus module is equipped with an InterBus port and a Modbus Plus port, both
are female 9-pin D connectors (see below for pinouts), and a reset push button.
InterBus Port
Connect the remote bus cable to the female connector port labeled interbus. The
following figure shows the InterBus port connection.
The following table shows the key to the remote bus.
Pin Signal Function
1 DO Data Out (+)
2 DI Data In (+)
3 GND Comm
4 GND (NOA622 only) F/O Interface
5 VCC (NOA622 only) F/O Interface
6 DO Data Out (-)
7 DI Data In (-)
8 VCC (NOA622 only) Auxiliary Supply for F/O
Interface
9 RBST (NOA622 only) RBST Coupling
Black circle = Pin occupied. White circle = N/C