Introduction

Most CNC status signals and status information are of an informative nature and, to some extent, are provided to the user via display data or via the HMI.

Real-time status signals consists of information from the CNC's real-time area. The interpolator's status information is described below.

In most cases, this consists of information about the CNC's operating mode such as active manual operation, active interpolation, program status and status information with regard to internal CNC processes, etc. which, of course, are naturally also helpful for diagnostic purposes.

The HMI or PLC can control or influence the internal status process by logical combination of status signals.

The CNC also provides status information with which specific machining technologies can be mastered better with the PLC's support. In the case of the speed look-ahead function, a status signal is generated which indicates in advance whenever a defined speed limit is fallen short of. Therefore, the power control of a burner, for examples, can be informed in good time.

The status information is made available to the PLC via the HLI. Therefore, the signals for status information described below can be found in the HLI interface.