Abstract: A process control system (PCS) includes a cable connection including physical cables including a first cable for connecting between a process controller and an I/O access device, and an independent second cable for connecting the process controller and a second node being the I/O access device or another device. The I/O access device is for coupling to I/O module(s) to receive an output of the I/O access device. An output of the I/O module is coupled to a field device coupled to processing equipment. The process controller and I/O access device each include a processor and memory that implement send and receive logic for communicating using any of multiple redundancy protocols including a first and a second redundant protocol. The cable connection is for supporting simultaneously communicating between the process controller and the second node utilizing both the first redundant protocol and the second redundant protocol.

Abstract: A method for manufacturing decorative concrete blocks for decorative garden walls is presented, along with a machine suitable for practicing the method.