The interface PLC Workstation is a document in the form of interconnected tables.
It is the main document for the design of data interchange (allocation of address space) between the controllers distributed in the system and the operator station. The design of the automation in the design of the program code is to create a document that is intended to reduce all technical decisions to a single document, "PLC-ARM Interface." Describes the distribution of variables to memory addresses of devices.
From the composition of this document, you can select the composition of the designed control and display functions.
The absence of this document in the project means either the self-determination of the performer in the scope of visualization, or the lack of skills in creating automated control systems