The B827–032 24 Vdc true high input module consists of a single group of 32 independent inputs. The B827 senses and converts switched input signals into logic voltage levels used by the PLC. Inputs can be received from push buttons, limit and proximity switches, and other 24 Vdc sources.

The B827–032 provides 32 inputs that share an external supply voltage. Input voltages are sensed by comparing the incoming voltage against a fixed threshold. The threshold is a function of the user-supplied field voltage.