Understanding module status using the ok indicator – Rockwell Automation 1756-M02AE Analog Encoder (AE) Servo Module Installation Instructions User Manual

Page 26

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26 Analog Encoder (AE) Servo Module

Publication 1756-IN047D-EN-P - March 2001

Figure 23 1756-M02AE Module LEDs

During power up, the module completes an indicator test. The OK indicator
turns red for 1 second and then turns to flashing green if the module passes
all its self tests.

This completes the installation of the module.

Understanding Module Status Using the OK Indicator

If the OK LED
displays:

Then the module status
is:

Take this action:

Off

The module is not operating.

• Apply chassis power.

• Verify the module is completely

inserted into the chassis and
backplane.

Flashing green
light

The module has passed
internal diagnostics, but it is
not communicating axis
data over the backplane.

• None, if you have not

configured the module.

• If you have configured the

module, check the slot number
in the 1756-M02AE Properties
dialog box.

CH 0

CH 1

FDBK

DRIVE

OK

2 AXIS SERVO

FDBK

DRIVE

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