Programmable controller interface apparatus
AssigneeSquare D Company
InventorGeoffrey Clarke
Life of this patent
Estimating the term…
Abstract
An interfacing apparatus for a programmable controller having input modules of limited input compatibility and an input signal adjusting circuit for adjusting the input signals to make them compatible with the input modules.
Claims12
A circuit board for an input rack assembly of a programmable controller, the board including a plurality of input terminals for receiving status input signals from the system being controlled, and a plurality of socket stations for receiving plug-in input modules, each socket station being connected to associated ones of the input terminals through a respective voltage controlling circuit, each voltage controlling circuit including selectably adjustable filter means and selectably adjustable potentiometer means, whereby status input signals passed to individual socket stations may be of desired voltage types and voltage levels.
An apparatus for interfacing input signals of a system having a plurality of sources of diverse input signals with a processor of a programmable controller controlling said system, comprising:
- a plurality of input terminals for connection with said diverse input signal sources;
- a plurality of connectors for connection of a plurality of input modules with said processor;
- and
- a plurality of signal adjusting circuits connected between said plurality of input terminals and said plurality of input modules connectors to produce adjusted input signals compatible with said input modules in response to said system input signals, said signal adjusting circuits including manually adjustable means for adjusting the input signals.
Dependencies are inferred from the claim text.