For utilities, remote connectivity offers has the potential to limit field visits, redu...
Recently, ProSoft’s Modernization Gateway got two new firmware updates to add to its us...
Data from your facility’s equipment like boilers, chillers, HVAC systems, air compresso...
We’ve got the answers to your most frequently asked questions about industrial remote c...
Sometimes, if you're not used to dealing with industrial communications, you may not exactly know what some terms mean, like master or client. A master is a device that is actively polling for data from one or multiple devices using a serial communication protocol. A slave is the counterpart of the master. It is a passive device, waiting for the master to poll for data to actually send it. Some examples of devices or protocols using master/slave communication are Modbus® RTUs, IEC 60870-5-101, DNP 3.0, PROFIBUS, and HART.
A client is a device that is actively polling for data from one or multiple devices. A server device is the passive component, waiting for the client to poll for data to actually send it.Modbus TCP/IP, 60870-5-104, IEC 61850, and PROFINET are some protocols using client/server communication.
Basically, the master/client gives orders, the slave/server acts – just like in a restaurant!