Daughtercard performance, Interpret the led status indicators, Module status (ms) indicator – Rockwell Automation 1788-DNBO DeviceNet Daughtercard Installation Instructions User Manual

Page 8

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8 DeviceNet Daughtercard

Publication 1788-IN053A-EN-P - December 2001

Daughtercard Performance

Due to wide variation in available host devices, we cannot provide specific performance
capabilities in this document. For information concerning host/daughtercard performance
characteristics, refer to the user manual for the particular host device.

Interpret the LED Status Indicators

The three status indicators on the daughtercard provide information about the network, the
daughtercard, and its connections.
Note: The bottom left-hand LED is not used and is always off.
The following tables outline the possible states, explain what each state means, and indicate
what action you should take, if any, to correct that state.

Module Status (MS) Indicator

This bi-color (green/red) LED provides device status. It indicates whether or not the device
has power and is operating properly.

Condition

Status

Indicates

off

no power

No power applied to device.

green

device operational

Device is operating in a normal condition.

flashing green

1

device in standby
(device needs
commissioning)

Device needs commissioning due to
configuration missing, incomplete, or
incorrect.
Device may be in the standby state. Refer
to the DeviceNet Specification, Volume
II, Identity Object.

flashing red

1

recoverable fault

E.g., the device’s scan list configuration
does not match the actual network
configuration.

red

unrecoverable fault

Device has an unrecoverable fault. Cycle
power to the daughtercard by shutting
down and cycling power to the host. If
the problem persists, the device may
need to be replaced.

flashing red-green

device self testing

Device is in self test. Refer to the
DeviceNet Specification, Volume II,
Identity Object.

1

The flash rate of the LED is approximately 1 flash per second. The LED should be on for approximately

0.5 seconds and off for approximately 0.5 seconds.

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