HEIDENHAIN MANUALplus 620 Manual page 58

Integrated PLC
Overview The PLC program is created by the machine manufacturer either
at the control or with the PLC development software PLCdesign
(accessory). Machine-specific functions are activated and
monitored via the PLC inputs/outputs. The number of PLC inputs/
outputs required depends on the complexity of the machine.
PLC inputs/ PLC inputs and outputs are available via the external PL 6000 PLC
outputs input/output systems or the UEC 11x. The PLC inputs/outputs and
the PROFIBUS-DP-capable I/O system must be configured with
the IOconfig PC software.
PLC programming
Format
Memory
Cycle time
Command
set
The machine manufacturer can display his own PLC soft keys in
PLC soft keys
the vertical soft-key row on the screen.
PLC positioning All closed-loop axes can be also positioned
via the PLC. PLC positioning of the NC
axes cannot be superimposed on NC
positioning.
Axes can be controlled by the PLC. They are programmed
PLC axes
by M functions or OEM cycles. The PLC axes are positioned
independently of the NC axes.
PC software for PLC program development.
PLCdesign
(accessory) The PC program PLCdesign can be used for easy creation of
PLC programs. Comprehensive examples of PLC programs are
included with the product.
Functions:
•
Easy-to-use text editor
•
Menu-guided operation
•
Programming of symbolic operands
•
Modular programming method
•
"Compiling" and "linking" of PLC source files
•
Operand commenting, creation of the documentation file
•
Comprehensive help system
•
Data transfer between the PC and control
•
Creation of PLC soft keys
58
Statement list
350 MB
9 ms to 30 ms (adjustable)
•
Bit, byte and word commands
•
Logical operations
•
Arithmetic commands
•
Comparisons
•
Nested calculations (parentheses)
•
Jump commands
•
Subprograms
•
Stack operations
•
Submit programs
•
952 timers
•
48 counters
•
Comments
•
PLC modules
•
100 strings