An introduction to circular connectors and cables
A – connectors for sensors, dc power and 1 Gbit Ethernet (protocol for connecting computer systems to form a network). B – connectors for Fieldbus (industrial computer network for distributed control) and Profibus (digital network standard providing communication between field sensors and a control system). C – connectors with a dual keyway for added security, used for ac power for sensors and actuators. D – connectors for 100 Mbit Ethernet and Profinet (protocol for data exchange between controllers and devices) systems. X – connectors for 10 Gbit Ethernet high speed applications as well as power over Ethernet (PoE). S – connectors for ac power (replacement for C – coded parts). T – connectors for dc power (replacement for A – coded parts).
Figure 4: Mating of a male and female circular connector pair. (Image source: Same Sky)
Circular connector selection criteria
There is a nearly endless list of specifications and considerations to take into account when selecting circular connectors and/or cables for a design. Outside of deciding whether a circular plastic connector (CPC) or circular metal-shell connector
Figure 5: How to designate jacks and plugs of different genders. (Image source: Same Sky)
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