Addressing the bits in the controller
T
he bits of the process images can be accessed in the logic using the following
scheme: Ix.x and Qx.x. The start byte (byte 0) is relative to the specified Start address.
If Start address is set to the value 17, then the output bit 0.0 in the logic can be
accessed as Q17.0. The input bit 3.1 then corresponds to I20.1.
OVERVIEW OF THE PROCESS IMAGES 4
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