Kuhnke Electronics Instruction Manual

Function Libraries
configuration to it, the project must not contain module
PLC_PRG. (If it is a part of the project it will not be run if a
task configuration is defined.)
PLC_PRG is a module free-wheeling through 800µs time
slices.
At the end of the time slice, processing of PLC_PRG is
interrupted to give way to the handling of other registered
processes.
When the task manager reactivates PLC_PRG it will pick
up the thread at the point where it was interrupted.
Once the last PLC_PRG command has been executed
the actions linked to PLC_PRG, i.e. refreshing the
process chart, CANopen ∗ , communication etc., will be
taken only to start the task afresh afterwards.
A long PLC_PRG runtime is an extra burden to
communication:
- To program non-time-critical sections, use a thread
instead (see page 71)
∗ Controllers featuring a CANopen interface only
62 E 700 GB