PROFIBUS to PROFINET migration without stopping the plant
Gateways, proxies, cable reuse, GSD-to-GSDML transitions, and a cutover sequence that keeps brownfield I/O alive.
PROFIBUS
Established PI fieldbus family for factory and process devices.
PROFIBUS is a family of digital fieldbus protocols from PI, including DP for factory automation and PA for process instruments. It provides cyclic data, diagnostics, and device profiles over established physical layers.
See also: PROFINET · Fieldbus · Functional safety
Use the concept: Subnet calculator · Modbus RTU CRC & frame helper · Modbus register decoder & byte-order check
In depth
A field guide to industrial Ethernet
PROFINET, EtherNet/IP, EtherCAT, and TSN serve different masters. What each was designed for and how to tell them apart.
Modbus polling and timeout budget: calculate the slow path
Estimate serial transaction time, include silent intervals and device response, and prevent offline devices from consuming the entire polling cycle.