HEIDENHAIN TNC 335 Technical Manual - Manual (Page 24)

2-2
TNC 360 1 Hardware Concept 8/95
1 Hardware Concept
The HEIDENHAIN TNC 360 contouring control is designed for use with drilling and milling machines.
The HEIDENHAIN TNCs consist of several units. The principle subassembly is the logic unit. The
logic unit is joined to the other units and the TNC accessories by connecting cables.
Encoders
Noml. value outputs
PLC I/0 unit
Visual display unit
TNC keyboard unit
Touch probe
Electronic handwheel
Data interfaces
NC PLC
Common
data area
Machine operating panel
PLC outputs
PLC inputs
• • • • • •
• • •
• • •
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.