Control-internal extensions
The program name assigned when the program is created is extended within the control with
the addition of a prefix and a suffix:
● Prefix: _N_
● Suffix:
– Main programs: _MPF
– Subprograms: _SPF
Files in punch tape format
Externally created program files that are read via the V.24 interface must be present in punch
tape format.
The following additional rules apply for the program name of a file in punch tape format:
● First character: %
● Then a four-character file extension: _xxx
Examples:
● %_N_SHAFT123_MPF
● %Flange3_MPF
2.2.2 Structure and contents of an NC program
2.2.2.1 Blocks and block components
Blocks
An NC program consists of a sequence of NC blocks. Each block contains the data for
executing a step in the workpiece machining.
Block components
NC blocks consist of the following components:
● Commands (statements) according to DIN 66025
● Elements of the NC high-level language
Commands according to DIN 66025
The commands according to DIN 66025 consist of an address character and a digit or
sequence of digits representing an arithmetic value.
Address character (address)
Fundamentals
2.2 Fundamental Principles of NC Programming
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0 43
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