6-3
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
Combi–slave (both the FMS master and DP master have full access to the
I/O modules of the ET 200U)
One DP master and FMS master each are on the bus. The I/O modules of
the combi–slave are divided up between the DP master and FMS master.
DP master: The DP master reads the inputs and sets the outputs of the
I/O modules assigned to it.
The DP master has neither read nor write access to the I/O modules as-
signed to the FMS master.
FMS master: The FMS master reads the inputs and sets the outputs of the
remaining I/O modules, that is those assigned to it.
The FMS master has read access to the I/O modules assigned to the DP
master but no permission to write.
Note
The I/O modules in the combi–slave are automatically assigned when para-
meterizing the ET 200U with COM ET 200.
The I/O modules from slot 0 to the last parameterized (DP master) I/O mo-
dule are allocated to the DP master.
The FMS master is assigned the remaining I/O modules.
ET 200U(DP Standard/FMS): Modes, Settings and Comm. Capabilities of IM 318–C
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