Technical data

➣ Each output I/O byte via which you want to transmit must be assigned
to a "global object" (GO). A GO is a global I/O byte (GPB).
➣ The GOs are numbered.
➣ Each input I/O byte via which you want to receive, must also be
assigned to a GO.
A GO always consists of the following:
➣ One I/O output byte for one sender and
➣ One or more I/O input bytes for the receivers
The way in which areas are reserved for the GP and how I/O bytes are
assigned to global objects is described in Section 9.2.
➣
Configuring I/O areas for GP
The GP frames automatically have the priority "high" for the CP 5430 TF/CP
5431 FMS; i.e. the CP 5430 TF/CP 5431 FMS gives priority to a GP frame.
Functions:
By configuring with the GP station editor, the CP becomes the "distributor".
Transmission on the CP:
➣ The output data of the PLC are read out.
➣ All values changed since the last time the output data were read out are
detected.
➣ All changed values including object information is packed into change
frames.
➣ The frame is transmitted as a broadcast to all GP stations.
Communication with Global I/Os B8976060/01
Volume 1 9 - 4