3 Configuration Software
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CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
PROFIBUS DP-V1 defines extended communication functions between a PROFIBUS DP-V1 mas-
ter and a PROFIBUS DP-V1 slave device. These extensions include:
• Acyclic communications between master and slave to allow re-parameterization during I/O
data exchange.
• Extended alarm reporting and acknowledgement.
Settings related to these extensions are sent to the slave device through the Set_Prm message.
Note 1 The PROFIBUS DP-V1 settings in this tab refer to PROFIBUS DP-V1 Class 1 communica-
tion only. For PROFIBUS DP-V1 Class 2 communication no specific settings are required.
2 The CJ1W-PRM21 PROFIBUS DP Master units will automatically disable the DP-V1 set-
tings to avoid the slave devices to use PROFIBUS DP-V1 functions. Only the CJ1W-
PRM21 PROFIBUS DP-V1 Master Units will use the settings below.
The DPV1 settings window is shown below.
Enable DPV1
This checkbox enables or disables the DPV1 functions for the specific slave device. The Master
DTM will clear this setting prior to download.
Max. Channel Data Length
This parameter defines the maximum size in bytes of the acyclic message exchanged with the PRO-
FIBUS DP-V1 Master Unit. The size ranges from 4 bytes to 244 bytes. The actual upper limit of the
number is defined by the buffer capacity of the slave device.
DPVI Tab
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