Siemens SINUMERIK 840D sl Function Manual

Also see for SINUMERIK 828D Turning: Diagnostic manual Function manual Equipment manual Programming manual Operating manual

Synchronized actions1. Auxiliary function outputDuring workpiece machining, technological functions (→ auxiliary functions) can be outputfrom the CNC program to the PLC. For example, these auxiliary functions are used tocontrol additional equipment for the machine tool, such as quills, grabbers, clampingchucks, etc.2. Fast auxiliary function outputFor time-critical switching functions, the acknowledgement times for the → auxiliaryfunctions can be minimized and unnecessary hold points in the machining process can beavoided.Synchronized axesSynchronized axes take the same time to traverse their path as the geometry axes take fortheir path.Synchronized axisA synchronized axis is the → gantry axis whose set position is continuously derived from themotion of the → leading axis and is, thus, moved synchronously with the leading axis. Fromthe point of view of the programmer and operator, the synchronized axis "does not exist".System memoryThe system memory is a memory in the CPU in which the following data is stored:● Data required by the operating system● The operands timers, counters, markersSystem variableA variable that exists without any input from the programmer of a → part program. It is definedby a data type and the variable name preceded by the character $. See → User-defined variable.Tapping without compensating chuckThis function allows threads to be tapped without a compensating chuck. By using theinterpolating method of the spindle as a rotary axis and the drilling axis, threads can be cut toa precise final drilling depth, e.g. for blind hole threads (requirement: spindles in axis operation).Text editorSee → EditorTOA areaThe TOA area includes all tool and magazine data. By default, this area coincides with the→ channel area with regard to the access of the data. However, machine data can be used toGlossaryExtended Functions972 Function Manual, 10/2015, 6FC5397-1BP40-5BA3