Checking The Led Indicators - Allen-Bradley ControlLogix 1756-HYD02 Installation Instructions Manual

Checking the LED Indicators

The module uses a single bi-colored LED to indicate module OK
status and bi-colored LED indicators to show individual feedback
(FDBK) and drive (DRIVE) status for both axes.
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.
Understanding Module Status Using the OK Indicator
OK indicator
The table below offers an explanation of the OK indicator.
If the OK The module status is:
indicator
displays:
Off The module is not operating.
Flashing green The module has passed
light internal diagnostics, but it is
not communicating axis
data over the backplane.
Steady green One of the following:
· Module is exchanging
light
· The module is in the
ControlLogix™ Hydraulic Servo Module 13
HYDRAULIC
AX0 AX1
FDBK FDBK
DRIVE DRIVE
OK
Allen-Bradle
axis data.
normal operating state.
Take this action:
· Apply chassis power.
· Verify the module is completely
inserted in chassis and backplane.
· None, if you have not configured the
module.
· If you have configured the module,
check the slot number in the
1756-HYD02 Properties dialog box.
None
Publication
1756-IN580A-EN-P - March 2003