3 Configuration Software
3-28
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
Precautions for Correct UsePrecautions for Correct Use
Selecting the Lock option makes any future changes of the address impossible, even after
power-down/power-up of the slave device.
Note After successful completion of the address change, the device DTM address in the Network
view has to be changed as well.
Diagnostics User Interface
The PROFIBUS Master DTM provides a second user interface to display the Diagnostics informa-
tion available in the PROFIBUS Master Unit. This information concerns:
• Unit and PROFIBUS DP Interface status flags.
• Slave status flags and common slave diagnostics.
• The Unit’s Error Log.
Furthermore, the Diagnostics User Interface allows changing the Master’s PROFIBUS operational
mode and the transmission of Global-Control commands.
In order to access the Diagnostics User Interface, the DTM has to be on-line, i.e. a communication
channel between the DTM and the PROFIBUS Master Unit must have been established.
Opening the DTM Diagnostics User Interface
In order to open the DTM Diagnostics User Interface perform the following sequence.
1
To go on line, perform one of the following actions.
• Select the DTM in the Network view.
• Select the Device - Go Online option from the main menu, or from the DTM context menu, or
Select the button from the Tool Bar.
2
A communication channel will be opened through CX-Server. The name of the DTM in the Net-
work view will turn to Italic font to indicate that the Unit is online.
3
Select the Device - Diagnosis option from the main menu, or from the DTM context menu. The
Diagnostics User Interface will now be displayed.
The figure below shows an example of the DTM Diagnostics User Interface.
3-2-2 Diagnostic User Interface
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