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5 Operation
5-28
CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)
1
The Output Data state is CPU Mode Dependent. If the CPU is in Program mode then the Output
Data is marked as invalid. If the CPU is in Run mode then the Output Data is marked as valid.
2
The Output Data state is controlled by a Device Variable (
*_OutDatValCmd
) The Set Output
Data Valid bit sets the state of the output data. If the bit is set to TRUE the Output Data is set to
valid.
When the Output Data state is assigned as a Device Variable then it can be accessed and/or con-
trolled from a number of sources, e.g. from an HMI or SCADA system or another CPU. Typically this
item is accessed from the user program. For commissioning purposes the IO Controller DTM can be
used. In the Diagnosis item, IO Controller Status sub item has the button
Toggle User Bit
to
set/reset the Output Data state.
Additional Information
When the Valid Output Data Handling is set to User Bit Controlled then the Outputs of the IO
Devices will only be controlled if the Output Data of the IO Controller is valid. Input Data coming
from the IO Devices is forwarded to CPU memory if it is set to valid by the IO Device.
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