Data of a channel\axis

A distinction is made between the following data areas, whereby channels and axes may be considered the same:

The header areas contain:

• management data such as version information and log-on information

The user data areas contain:

• status and display information (CNC → PLC),
• control interfaces (PLC → CNC),
• technology areas (CNC → PLC and PLC → CNC),
• and any application-specific data.

Specific data, such as status information, is refreshed cyclically by the CNC and can be read by the PLC if needed. However, M functions, so-called usage information, must be read by the PLC. For this purpose, the interface contains suitable mechanisms to ensure that no data is lost and that the order of the data is retained.