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PROFIBUS-DP Master DTM
Section 3-3
5. Make the necessary selections to facilitate communication between the
PC and the PLC CPU to which the PROFIBUS-DP Master Unit is attached,
and press the OK button.
Testing CX-Server setup After making the settings, press the OK button to close the CX-Server inter-
face. In order to verify that the communication has been setup correctly, press
the Test button in the Device Setup tab of the DTM Configuration User Inter-
face. This will initiate a FINS command to read the Unit’s profile, i.e. the name
of the Unit and the firmware version.
If the communication has been setup correctly, the response of the FINS
command will yield the required information, which will be displayed in the
Device Information box, in the Description and Firmware Version fields. If
the communication is not setup correctly, the two fields will contain three
dashes, i.e. “---”, and an Error message will be displayed in the Error Log win-
dow of CX-Profibus. The communication settings must changed to the correct
value first.
When CX-Server has been setup correctly, it can be used for
• Configuration download
• Monitoring purposes
Note Since CX-Server is the common driver software for connection between PC-
based CX- programs (e.g. CX-Programmer, CX-Supervisor, etc.) and the
CS1/CJ1-series PLC, all these programs can communicate simultaneously
with the PLC. However, the settings for CX-Server made through each of
these programs have to be exactly the same, to allow simultaneous communi-
cation.
Downloading Parameters In order to download the parameters sets to the PROFIBUS-DP master Unit,
perform the following sequence.
1,2,3...
1. Select the DTM in the network view and right-click the mouse to display the
context menu.
2. Select Download Parameters from the menu, to initiate a download. A
communication channel through CX-Server will be opened automatically.
Monitoring For monitoring, an online connection with the Unit must be made first. To
achieve this perform the following sequence.
1,2,3...
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 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 Network View window, will turn to Italic font, to indicate that
the Unit is on-line.
3. From the context menu, select the Diagnosis option. The DTM’s Diagnos-
tics User Interface will be displayed.
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