Operating The Network; User Access To The Network - Omron CJ Series Operation Manual

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Operating the Network

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User Access to the Network

There are several ways through which a user can have access to and control over the PROFIBUS net-
work.
• Through a CPU user program: A CPU user program can set the operational mode of the Unit,
send Global-Control commands, read Master and slave status/diagnostics information
access the Unit's Error Log. Furthermore, the I/O data transferred between the PROFIBUS net-
work and the CPU memory can be used by the user program via user-defined variables.
• Through CX-ConfiguratorFDT: The CJ1W-PRM21 Master DTM Diagnosis User Interface provides
the user with buttons to set the operational mode of the Unit, send Global-Control commands,
read Master and slave status information and access the Unit's Error Log.
This section will explore both means to control the CJ1W-PRM21 PROFIBUS Master Unit.
The CJ1W-PRM21 Master DTM Diagnosis User Interface provides the means to control the Master
Unit directly from CX-ConfiguratorFDT, running on a PC.
 Access to the Unit
To access to the Unit's controls an online connection with the Unit has to be established. To achieve
this perform the following sequence.
1
To go on line, select the DTM in the Network view and perform one of the following actions.
• Select the Device - Go Online option from the main menu, or the DTM context menu, or
• Select the
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 on-line.
3
From the context menu select the Diagnosis option. The DTM's Diagnostics User Interface will
be displayed.
4
Select the Online Operations tab for the Units controls.
Precautions for Correct Use Precautions for Correct Use
Controlling the CJ1W-PRM21 PROFIBUS Master Unit from the CJ1W-PRM21 Master DTM
Diagnosis User Interface may interfere with a CPU user program running at the same time. This
can result in unexpected behavior. It is recommended to change the CPU mode to PROGRAM
mode to avoid this interference during the use of the CJ1W-PRM21 Master DTM Diagnosis User
interface.
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
button from the Tool Bar.
5 Operation
and
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