Feb 1, 2015
Every AS-Interface system needs three basic components: gateways, power supplies, and modules. Add some infrastructure like cable, and you have what it takes. When it comes to AS-Interface modules, 4-input modules and 4-input / 4-output modules are used the most.
Some users even go a step further and design everything using 4-input / 4-output modules. Flexibility in the field and reduced stocking are major advantages. Factory automation uses the AS-Interface flat cable while process automation almost always uses round cable.