OPERATION1. GENERAL
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The CNC functions have versatility in order to take action in
characteristics of various machines.
For example, CNC can specify the following:
S Rapid traverse rate of each axis
S Whether increment system is based on metric system or inch system.
S How to set command multiply/detect multiply (CMR/DMR)
Data to make the above specification is called parameters (See Section
III–11.5.1).
Parameters differ depending on machine tool.
MDI
CNC memory
Parameter
Rapid traverse rate
Position control
Reference position return
Backlash compensation data
Pitch error compensation
data
⋅
⋅
⋅
Program
Operational
characteristics
Setting
Display
Screen Keys
Automatic
operation
Movement
of the
machine
Fig. 1.6 (e) Displaying and setting parameters
A key called the data protection key can be defined. It is used to prevent
part programs, offset values, parameters, and setting data from being
registered, modified, or deleted erroneously (See Section III–11).
Program
Offset value
Parameters
Setting data
CNC memory
Data Setting
Machine operator’s
panel
Screen Keys
Data protection
key
MDI
Signal
Protection Key
Registration / modification inhibition
Fig. 1.6 (f) Data protection key
D Displaying and setting
parameters
D Data protection key