Convertible I/O Signal Processor for a Process Control Network

A convertible I/O signal processor is convertible between different operating configurations for connecting multiple field devices to the I/O signal processor by selectable types of electrical connectors such as cables, terminal blocks, and the like. The I/O signal processor includes a signal processing module connected to a signal processor and an interface module removably connected to the signal processing module. The interface module includes electrical connectors for receiving/transmitting I/O signals from and to field devices. The interface module and the signal processing module define I/O channels extending between the electrical connectors and the signal processor. The interface module in embodiments includes I/O module connectors that enable removable I/O modules to be interposed in the I/O channels.