Commissioning Manual
150 01/2017
Press this softkey to restart the NCK, so that the licensed options are activated.
Note
To use the CNC lock function, further activation operations are required after the CNC lock option is activated. For more
information, see Section "
CNC lock function (Page 289)".
Commissioning the PLC
6.1
PLC programming conventions
Program organization
During the PLC programming, you must structure your program into finished program parts (subroutines). The programming
language for the S7-200 offers you the capability to set up your user program in a structured manner.
There are the following two types of programs:
● Main program
● Subroutine
Eight levels of programming are possible.
Signal overview of PLC interface
The PLC program exchanges information among the NCK, HMI, MCP, and I/O through the signals of the PLC interface and
signals of the input and output cards.
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