The research of synchronization control with PLC based on the bus of serial communications
Xiang Sun, Zhao Feng · 2010
This Paper analyzes the structure of serial industrial fieldbus such as RS485, CAN and agreement stipulations of MODBUS and CAN2.0. It expounds the new PLC synchronous control method based on a serial bus between each module, control strategy of the synchronizing time examination mechanism, pre-synchronizing information processing and `free synchronization' and `forced synchronization' .