The Allen-Bradley 1734-IB8S is a POINT I/O Guard I/O Safety Module. It has Eight (8) Current Sinking Safety Input channels and Four (4) Current Sourcing Pulse Test Outputs. It requires a nominal supply voltage of 24VDC.
The POINT I/O ControlNet Adapter is a communications adapter for POINT I/O modules. The adapter provides an interface for controlling and communicating with POINT I/O modules from a ControlNet network