Festo SPC200 - Parallel Program Processing

5. Programming
5−21
Festo P.BE−SPC200−WIN−PISA−CD−EN en 0901d
5.2.1 Parallel program processing
The SPC200 possesses amultitasking−capable operating sys
tem. This can process two tasks parallel. For parallel proces
sing two programs must be defined as starting programs.
These will then be processed parallel as task A and task B.
Accessed sub−programs are processed instead of the relevant
starting program, until the sub−program processing is com
pleted
and the starting program is continued.
The parallel program processing supports the low−cost imple
mentation of two independent work stations with one
SPC200. Therefore certain I/O control signals (e.g. MC_A and
MC_B) and settings for positioning are managed task−specifi
cally.
However, task A and task B provide together:
 the control signals STOP, START/R ESET, ENABLE
and
R EADY
 the freely programmable I/Os (only in Start/Stop mode)
 the flags, registers and position registers
 the positioning axes. They are each assigned during the
processing of a positioning command of the accessing
task.