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1.3
Variants „Stand-Alone“ and „With PC-HMI“
On principle, the controllers can be operated in 2 different operating modes:
• The variant „Stand-Alone“ starts with the firmware immediately after the application of
the voltage
• The variant „With PC-HMI“ waits after the application of the voltage for the loading of a
firmware from a PC via the program StdHMI
The variant „With PC-HMI“ is the standard variant that is supplied. The table shows the two
variants in comparison:
Tabelle 5:
Table 5:
Operating modes PC-HMI and Standalone in comparison, ENC66
With PC-HMI
Stand-Alone
Use
The controller operates a
machine by means of coupling
with a PC with graphical user
interface, the PC is used for the
loading of programs and for the
operation of the controller
The controller operates a
machine without
further coupling with a PC
Firmware installed on
the controller
Bootloader
Bootloader
NC-Firmware
Installation of the
firmware
No additional software is neces-
sary. The NC firmware is loaded
from the PC after the starting of
the StdHMI by means of the
bootloader.
The NC firmware is installed by
the bootloader into the control-
ler FPROM memory
Behaviour of the con-
troller after the appli-
cation of the voltage
Upon application of the voltage,
the controller waits for the load-
ing of the NC firmware via the PC
Upon application of the voltage,
the controller starts automati-
cally the bootloader and then
the NC firmware
7-segment indicator
after application of
the voltage
Two adjacent segments rotate in
clockwise direction
The 7-segment display works as
described in chapter 1.4
Starting of the NC
firmware
The NC firmware is available on
the PC and is loaded after the
starting of the graphical user
interface StdHMI from the PC
into the controller RAM by
means of the bootloader and is
started
The NC firmware is loaded from
the FPROM memory into the
RAM by means of the boot-
loader. Then the NC firmware is
executed in the RAM.
7-Segment indicator
after starting the NC
firmware
Each segments of the 7-segment indicator are assigned to a system
task. The brightness of the various segments corresponds to the com-
puting load of the single tasks in the system.