30
FX
3U
-32DP PROFIBUS-DP Interface Block
User’s Manual
5 Communication Outline on PROFIBUS-DP Network
5.1 Cyclic Input/Output Data Communication
5.1.1
Cyclic Data Consistency
When the Cyclic Data Consistency Activate/Deactivate Flags turn ON, the cyclic data process behaves as
follows:
→
For details on Cyclic Communication related flags, refer to Chapter 6
Cyclic Input Data Consistency (Cyclic Input Data Consistency Activate/Deactivate Flag BFM#98 = ON)
Cyclic Output Data Consistency (Cyclic Output Data Consistency Activate/Deactivate Flag BFM#298 = ON)
Able to write to the 32DP's Cyclic Input
Data Send Area for this duration
ON
Write
Cyclic Input Data Send Flag
(BFM#99)
Writing data to the Cyclic Input
Data Send Area
(BFM#100 to #171)
Set ON automatically by FX
3U
-32DP if
Input Data can be written by user
Must be set OFF by user program after
writing of all Input Data
:
:
Cyclic Output Data Read Flag
(BFM#299)
Reading data from the Cyclic
Output Data Receive Area
(BFM#300 to #371)
ON
Read
Able to read from the 32DP's Cyclic Output
Data Receive Area for this duration
Set ON automatically by FX
3U
-32DP if
Output Data can be read by user
Must be set OFF by user program after
reading of Output Data
:
:
Summary of Contents for FX3U-32DP
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