The paper presents a method for constructing a software system for processing technological data as part of automated process control systems (APCS). The proposed approach is based on a formal representation of the data processing structure in the form of a directed acyclic graph (DAG), where each node corresponds to a stage of information transformation implemented using pluggable software modules. The architecture enables modularity, scalability, and reusability of components in organizing data processing and routing. The applicability of the approach is analyzed with regard to the development of flexible and adaptive software solutions designed for operation under changing requirements for processing logic of technological signals.

Keywords: APCS, process data processing, directed acyclic graph, modular architecture, software modules, fault tolerance, scalability, dynamic configuration, infrastructure integration, processing formalization