ProSoft Technology PLX51-PBS, User Manual

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Operation
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DPV1 CLASS 1 MESSAGING (MS1)
The PLX51-PBS Slave feature supports DPV1 Class 1 (MS1) messaging. See the DPV1 Objects
in the PLX50 Configuration Utility Device Configuration section for more information
regarding the configuration of the DPV1 Objects. You can configure several slot and index
combinations for DPV1 Class 1 communication (for each added PROFIBUS Slave device).
When the PROFIBUS Master sends a DPV1 read/write command for the configured slot and
index, the PLX51-PBS accesses the configured Logix tag to provide the required data. The data
to be written or read is extracted from the Logix SINT array. This array was configured in the
DPV1 objects of the device configuration window. Below is an example of the DPV1 operation
when the PLX51-PBS has been configured as a PROFIBUS Slave.
Figure 4.4 – PLX51-PBS DPV1 Object exchange