Hardware reference guide

DIO
230
35013379 11/2011
Wiring Diagram
The following figure shows the wiring diagram for the 140CRA21110 and 21210
wiring diagram.
NOTE: See Power and Grounding Considerations for AC and DC Powered
Systems, page 731 for power and grounding wiring guidelines and operational
information.
LED Indicators and Descriptons
The following figure shows the LED panel.
The following table shows the DIO LED indicators and descriptions.
LED Descriptions
LEDS Color Indication when On
Ready Green The module has passed power-up diagnostics.
Fault Red A communications error exists between the DIO module and one or
more I/O modules, or an output module is not being written to, over the
Modbus Plus network.
Pwr ok Green Bus power is present.