Industrial Instrumentation Communication and Networking

Fieldbus vs 4-20mA

The sensors and actuators that are connected to the inputs and outputs (IO) of a Programmable Controller or PLC are

HART, an acronym for Highway Addressable Remote Transducer, is an open process control network protocol and was introduced in the

HART ADDRESSING HART addressing is of two types: polling address and unique identifier. Polling address is single byte and is also

HART COMMUNICATION LAYERS The HART protocol follows the seven-layer OSI (Open Systems Interconnection) protocol, although it uses only three layers:

INSTALLATION AND GUIDELINES FOR HART NETWORKS HART devices use the conventional 4–20 mA current signal cable path to send the HART

APPLICATION IN SCADA The technology used in HART is very useful for SCADA applications. Since HART supports digital process values,

Serial Communication Data Transmission Modes means transferring of data between two devices. It is also called communication mode. These modes

RS232 vs RS485 RS232 and RS485 are standards for data cables. To exchange data between nodes on a network, the most

Introduction to Profibus If Modbus is the “granddaddy” of protocols, then Profibus is the young athlete – lean and fast.

Introduction to Modbus Modbus is the “granddaddy” of industrial communication protocols. It was originally designed in the mid-1970s by Modicon