Data Objects and Items Offered by the OPC Server

Overview

The OPC server provides the variables or items of a project that are saved to the symbol file of the gateway server. The syntax is the same as in EPAS-4.

Examples

Item list name

Description

PLC120.PLC_PRG.DIntTest

The DIntTest variable in the POU (Programmable Organization Unit) PLC_PRG in the PacDrive that has been configured with the name PLC120 for the OPC server.

PLC120.PLC_PRG.Structure.X[4]

The fourth element of the X ARRAY, which is part of the Structure in the POU PLC_PRG in the PacDrive with the name PLC120.

PLC120.g_bGlobVar1

The global variable g_bGlobVar1 in the PacDrive with the name PLC120.

It is not possible to activate direct addresses as the quantity of these addresses innately is too large. Variables that are located at these addresses can be read.