Siemens SINUMERIK 828D

Basic Functions
Function Manual 09/2011, 6FC5397-0BP40-2BA0
35
1
A2: Various NC/PLC interface signals and functions
1.1 Brief description
Content
The PLC/NCK interface comprises a data interface on one side and a function interface on the other. The data
interface contains status and control signals, auxiliary functions and G functions, while the function interface is
used to transfer jobs from the PLC to the NCK.
This Description describes the functionality of interface signals, which are of general relevance but are not
included in the Descriptions of Functions.
• Asynchronous events
• Status signals
• PLC variable (read and write)