Hardware Concept - HEIDENHAIN TNC 415 Technical Manual

1 Hardware concept

The HEIDENHAIN-contouring controls TNC 407 and TNC 415 are designed for use with drilling and
milling machines.
The HEIDENHAIN-TNCs consist of several units. The principal subassembly is the logic unit. The logic
unit is joined to the other units and the TNC accessories by connecting cables.
Visual display unit
TNC keyboard unit
Touch probe
Electronic handwheel
Data interfaces
The logic unit contains the electronics for both the NC and the PLC sections of the control.
The common data area contains the machine parameters and the PLC markers and words. The
machine parameters define the hardware configuration of the machine (ranges of travel, acceleration,
number of axes etc.). The PLC markers and words are used for the exchange of information between
the NC and the PLC.
2-2 TNC 407/TNC 415/TNC 425
Noml. value outputs
Encoders
• • • • • •
Common
NC
data area
1 Hardware concept
PLC I/0 unit
Machine operating panel
PLC
PLC inputs
PLC outputs
01.98