Property of a part variant. In this property you specify the device name of the PLC subdevice. PLC devices exist that consist of several integrated modules and that have several start addresses. Such a device can consist, for example, of an internal CPU module, an internal input-output module as well as internal counter module - however with only one part number. Such integrated modules within a PLC device can be displayed in EPLAN with PLC subdevices. To this purpose up to twelve PLC subdevices are available.

Reference

MDPartsDatabaseItemPropertyList Class
MDPartsDatabaseItemPropertyList Members