Types of protocol, how they work Types of wiring in plc and why European standard preferred to use sinking and Japanese Source.

Question

Accepted Answer

Explanation of types of protocols and wiring in PLC

Protocols are rules for communication between devices, such as Modbus, Profibus, and Ethernet/IP
Wiring in PLC can be sinking or sourcing, depending on the type of output module used
European standard prefers sinking wiring because it is safer and more reliable
Japanese standard prefers sourcing wiring because it is more cost-effective
Sinking wiring connects the load to the negative side of the power supply, while sourcing wiring connects the load to the positive side

Popular interview questions of Senior Application Engineer