Industrial Communication Guide

PAC Programmable Automation Controller

Multi-mode fiber optics Here the light is transmitted on different wavelengths, so higher speeds can be achieved as compared to single-mode. Due to the hig- her attenuation, this type of fiber optics is more suitable for shorter distances and local networks. The fiber core in this case has a dia- meter of 50µm and the jacket has a diameter of 125µm (notation: 50/125)

PAE Process image of the PLC inputs

PCF PCF stands for Polymer Cladded Fiber, also known as HCS (“hard- clad silica optical fiber”). Processing is less straightforward than in the case of POF but still possible by hand. PCF has medium attenua- tion and therefore a better data rate and range than POF.

NC Numerical Control

Network topology A network topology is a graphical representation of how the devices are networked with one another. Off-delay Function with an adjustable duration that delays the deactivation of a signal

PCS Process Control System

PE Polyethylene

Physical quantity An example of a physical quantity is temperature in Celsius.

Output signal Output of a control system

PLC Programmable Logic Controller

PAA Process image of the PLC outputs

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