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Configuring the PROFIBUS DP network
2-6
Configuring the PROFIBUS DP network
Defining the Configuration
Downloading the
Configuration
2-6-1
Configuring the Slave Devices
After making the physical connections of the network, the PROFIBUS Master
unit has to be configured using the PROFIBUS Master's configuration tool.
OMRON provides a Personal Computer based configuration program, called
CX-Profibus (only required for OMRON masters), as well as the required
DTM's for this purpose. It must be used to:
• Install new GSD-file
• Define the master(s).
• Assign slaves to their respective master(s).
• Assign slaves to groups for broadcast/multicast messages.
• Enter bus parameters, e.g. baud rate, target rotation time etc.
• Enable / Disable watchdog.
• Adjust watchdog settings
Refer to CS/CJ Series PROFIBUS DP Master Units Operation Manual
(W409-E2-
) for more information on CX-Profibus.
@
The configuration must be downloaded to the Master unit after configuring it
at the Personal Computer. This can be accomplished by either connecting the
serial COM port of the Personal Computer to the CS1/CJ1 PLC with a serial
interface cable, or use an Ethernet connection between the Personal Com-
puter and the CS1/CJ1 PLC via an Ethernet unit.
After adding each of the slave DTM's to the network, configurations have to be
selected for each of them. Setting up a configuration involves
• Selecting the proper I/O modules
I/O Modules represent either a fixed number of setpoint and process
parameters for each connected RS-422A / RS-485 device or a fixed size
I/O slot which can be used to send user defined protocol data. One type
of I/O slot needs to be selected for each connected RS-422A / RS-485
device.
• Setting up the device parameters
Depending on the I/O module, device settings can be made, which will be
transferred to the RS-422A / RS-485 device through the PRT1-SCU11.
The PRT1-SCU11 itself will validate the settings and reject the data in
case of faulty parameters.
• Selecting the group assignment, which defines the group of slave devices
each slave belongs to and to allow sending Global-Control commands to
this particular group.
All these settings will be downloaded to the Master unit, which will send the
data to the individual slave devices over the PROFIBUS network.
Note The available I/O Modules are discussed in SECTION 3 Operation .
Section 2-6
35
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