Handshaking

Protocol for establishing communication and verifying data transfer readiness. This term is essential for understanding communication protocols in industrial automation and PLC programming. It represents a key concept that professionals encounter regularly in their work with control systems and automation projects.

For anyone working with industrial Ethernet or fieldbus systems, Handshaking is essential vocabulary. Protocol for establishing communication and verifying data transfer readiness.

Under the hood, Handshaking is implemented at a specific position in the OSI model — typically physical, data-link, or application layer — and its behaviour determines whether downstream PLC scan cycles can stay deterministic. Engineers have to consider cycle-time impact, jitter, security, and brand support when comparing it against alternatives.

When commissioning systems involving Handshaking, engineers usually begin with manufacturer-provided diagnostic utilities, then use Wireshark or a protocol-specific analyzer when the vendor tool runs out. Knowing which layer your problem lives on saves hours.