Rockwell Automation 198 Series C Modular DeviceNet Starter Auxiliary User Manual - Manual (Page 22)

Publication 198-UM002A-EN-P December 2001
Chapter
3
Operation
Chapter Objectives
This chapter contains the following information:
• Configuring the Modular DSA I/O System
• DeviceNet Explicit Messaging
• Mod/Net Status LED
• I/O Status LED
Basic Configuration (Accepting I/O Module Configuration)
This section will provide the user with the basic steps for configuring an MDSA on
DeviceNet. It also contains specific examples of how to configure a device using RSNetWorx
for DeviceNet.
The first step to setting up a system that contains an MDSA is to power up the MDSA
DeviceNet module. Once it is powered up, it will attempt to determine the network baud, and
set its baud rate appropriately. While the MDSA DeviceNet module is determining the
network baud rate, the Mod/Net Status LED will blink green for ¼ second, red for ¼
second, then turn off. This pattern will be repeated until the baud rate is determined.
Once the proper baud rate is set, the Mod/Net Status LED will either blink green or turn
solid green. If the Mod/Net Status LED turns solid red, it has most likely failed its
“Duplicate MAC ID Check”, which means that the MDSA DeviceNet module has detected
another device on the network with the same node address or “MAC ID”. Note that
automatic baud rate detection can be disabled to allow a baud rate to be manually configured
(see Advanced Topics on page 3-12)
The first time that an MDSA DeviceNet module is powered up, the I/O Status LED will turn
solid red. This indicates that the configuration of the I/O modules has not been accepted.
IMPORTANT
If there is no traffic on the network, the device will not be able to
determine the network baud rate. The Mod/Net Status LED will to
continue to repeat the green/red/off blinking pattern until network
traffic is detected