PROFIBUS DP Communication
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In the preceding figure, station 4 is MD38DP1, which is only used as an example. For
details about its usage, see the MD380 Series PROFIBUS User Guide. MD38DP1 and
MD38DP2 can coexist on the same network.
4. Configure data features of the slave.
After the PPO type is added, the address assigned by the PLC to the slave is
displayed, as shown in the following figure. Slot 1 marked with a red circle in the
following figure indicates the PKW address (8 bytes). Slot 2 indicates the PZD
address (12 bytes).
If the selected PPO type does not have a PKW area, the I address and Q address of
slot 1 are blank.
5. Configure PZDs.
The PZD1 and PZD2 configurations are fixed and cannot be modified by users.
PZD3 to PZD12 are for customized periodic data exchange. They can be set in
hardware configuration. Double‑click the MD38DP icon in HW Config, click Device-
specific parameters, and configure corresponding parameter addresses as
required.
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