A master device controls the communication with the slaves. It interrogates the slaves for whether they want to transmit or can receive. Only master devices can initiate a communication. Polling is a form of synchronising a number of devices.
Thermal Engineering Show (Derby, GB) 02.06.2016 - 02.06.2016
Manufacturing & Engineering North East (Newcastle, GB) 06.07.2016 - 07.07.2016