Rockwell Automation GMLC Reference Manual - Manual (Page 364)

Publication GMLC-5.2 - November 1999
If Axis Fault 327
Note: In the table above, the columns at the right show whether each
fault value is valid for servo (S), master only (MO), virtual (V),
or imaginary (I) axes.
The axis faults are prioritized from highest to lowest in the order shown in
the previous table. A hardware overtravel fault has higher priority than a
software overtravel fault. When a given fault is active, another fault of
lower priority can also be active. For instance, if a hardware overtravel
fault is active for an axis, a software overtravel condition may also be
active on the axis. When the highest priority fault is cleared, the next
highest priority fault is evaluated by a subsequent If Axis Fault block.
Checking for Faults on Any Axis
When you select Any Fault Any Axis, program flow branches to the top
(true) node if any of the faults shown in the previous table are active on
any axis. This selection is useful for building a global axis fault handling
routine.
Axis Faults
Description Runtime Display S
M
O
V I
AxisLink Timed Out AXL FLT ✔
AxisLink Failed (axis not found) AXL FLT ✔
Drive Fault DRV FLT ✔
Position Limit Exceeded ERR FLT ✔
Hardware Overtravel Fault HRD LIM ✔
Software Overtravel Fault SFT LIM ✔
Encoder Loss or Noise Fault ENC FLT ✔ ✔