Rockwell Automation 1769-SM2 Compact I/O DSI/Modbus Communication Module - Manual (Page 155)

Troubleshooting 9-3
The CH1, CH2, and CH3 status indicators are bicolor red and green
LEDs.
CH1…CH3 Status Indicators
Status Cause Corrective Action
Off The module is not powered.
The channel is not connected to
a PowerFlex 4-Class DSI drive.
The channel is set for Modbus
RTU Master operation, but is not
transmitting.
•
Apply power to the module.
• Apply power to the PowerFlex 4-Class
DSI drive.
•
Connect the module channel to the
drive using a communications cable.
Flashing
Red In Single mode, the channel is
not receiving communication
from the drive.
In Multi-Drive mode, the channel
is not receiving communication
from one or more configured
drives.
• Verify that the 22-RJ45CBL-C*
communications cable is securely
connected and not damaged. Replace
cable if necessary.
•
Verify the setting for the [DSI I/O Cfg x]
parameter.
•
Verify the settings for the [Drv x Addr x]
parameters.
• Verify the settings for the node address
and data rate parameters in the drive.
•
Cycle power to the drive.
Flashing
Green The channel is properly
connected to the drive and is
communicating, but is not
sending I/O to the drive.
The channel is set for Modbus
RTU Master operation, and is
transmitting.
No action required.
Steady
Green The channel is properly
connected to the drive and is
sending I/O to the drive. No action required.