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4.4.4
Examples of reading and writing
Description
A PC station contains an IO controller user program known as the IO controller for the
process level that controls its IO devices via a CP 1626.
Outside the PC station, there is an external IO controller known as the IO controller for the
control level that can write and read input/output bits of the IO controller for the process level
via the IO router.
Process data is exchanged using the IO router functions.
CP 1626
Operating Instructions, 11/2018, C79000-G8976-C434-03
Operating hardware
4.4 IO routing
59
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