Allen-Bradley 1756-IF8H Hart Analog Input Module

Allen-Bradley 1756-IF8H is a ControlLogix eight-channel HART analog input module that provides eight differential analog input points and uses a 36-pin connector for 1756 backplanes. It is designed to be installed in a 1756 ControlLogix I/O chassis, enabling direct integration of HART-enabled sensors and transmitters into the PLC I/O tree. Each channel accepts differential inputs for current or voltage signals and supports HART communication with smart transmitters, allowing digital data exchange while the analog signal is measured. The module’s HART capability enables on-line device configuration and diagnostic data collection from connected instruments, complementing traditional analog readings. This eight-channel, differential input module offers scalable data acquisition for process automation, instrumentation networks, and remote monitoring where HART-enabled instrumentation is deployed alongside conventional sensors. Its compact 8-channel format helps optimize rack space in ControlLogix cabinets, and the 36-pin interface aligns with standard 1756 wiring and backplane conventions.