Industrial communication I
Complicated processes, such as in oil & gas, contain a varied and myriad number of tasks of different types. Coordination and control of their system and subsystems are achieved through astute communication in real time with respect to environmental factors. Meaning, on-site machines require different protocols than those found within control rooms and substations. Compatibility of all protocols is often ensured through gateways. The following expresses one of the common protocols and their area of application:
- IEC 61850 → used primarily in electrical substations for communication between intelligent electronic devices (IEDs), like protection relays, UPS systems, battery chargers, and power electronics. The IEC 61850 provides high-speed communication and standardized data models, enabling advanced protection, monitoring, and automation functions.Â
- RTU/Modbus → typically used with field devices communications in harsh environments, such as motors, variable frequency drives (VFDs), PLCs, and instrumentation. Modbus RTU operates over serial links (RS-485), making it simple, yet robust.Â
- Ethernet/TCP → serves as the communication backbone of modern industrial facilities, connecting PLCs, RTUs, HMIs, engineering workstations, substations, and Distributed Control Systems (DCS). It provides high bandwidth and supports the transport of numerous industrial protocols, including Modbus TCP and IEC 61850.


















