AGFA d-lab.3 Digital Compact Lab

Repair
Software
Software Structure of the Controller
The CG Controller and the FL Controller have to
perform different functions. For this reason, the
Software structure is different, above all as
concerns the Interface and the Dispatcher.
FL Controller
Several functions have to be performed at the
same time:
− Interpreting arriving telegrams and responding to
them
− Sending CAN commands and assessing /
transmitting the related acknowledgements
− Performing basic functions simultaneously for
several loads
The Software on the FL Controller checks
conditions in an endless cycle, responds to events
and triggers the required action. This main loop
(main function) runs through within 1-2 ms.
Time-dependent actions are executed in
Interrupts:
− Response to telegrams from the RS232 interface
− Response to telegrams from the CAN-Bus
− Output of telegrams
− Control of the motors via the PWM or CC mode
Algorithms/Interface Controller
Like the FL-Controller, commands are received
and performed in a main loop. Besides this,
Interrupt routines are running for time-dependent
actions.
CG Controller
The CG Controller receives commands, confirms
and executes them sequentially.
After receipt of a telegram from the CAN-Bus, an
appropriate function is called up by the Dispatcher.
After it has been executed, a feedback message is
sent via the CAN-Bus.
Only the motors are controlled in Interrupts.
AGFA d-lab.3 2001-01-02 /PN 9009 8.3