Migrations

PLC4X keeps its API stable within a release line, but a major release is where the things that could not be fixed compatibly get fixed. This section collects, per release step, everything an existing application has to change - and nothing else.

Each migration guide is split by programming language, because a change that rewrites half of a PLC4Go application may not touch a PLC4J one at all, and the other way around.

Migration	Summary
0.13.1 to 1.0.0	The first major release. A new shared driver SPI, one array notation across all drivers and languages, one vocabulary for connection-string parameters, and secure-by-default TLS and OPC UA settings. Java 21 and Go 1.27 become the baseline.

Migration

Summary

0.13.1 to 1.0.0

The first major release. A new shared driver SPI, one array notation across all drivers and languages, one vocabulary for connection-string parameters, and secure-by-default TLS and OPC UA settings. Java 21 and Go 1.27 become the baseline.