Rockwell Automation GMLC Reference Manual - Manual (Page 547)

Publication GMLC-5.2 - November 1999
510 Fault Variables
AxisLink Timeout Fault
On motion controllers with the AxisLink option (IMC-S/2xx-L models or
1394-SJTxx-C-RL), an AxisLink virtual axis fault (Global_fault = 9)
indicates that the current AxisLink virtual axis connection has failed or
could not be established. See AxisLink Timeout and AxisLink Failed for
more information on the specific conditions that cause this fault.
The motion controller displays the AxisLink Virtual Axis Fault in the
Terminal Window or the runtime display (if enabled). However, this fault
variable is not available in the Expression Builder.
AxisLink General Fault
For motion controllers with the AxisLink option (1394-SJTxx-C-RL or
IMC-S/2xx-L models), an AxisLink general fault (Global_fault = 8)
indicates an AxisLink timeout occurred, when the controller attempted to
access another motion controller’s AxisLink outputs or data. See
AxisLink General Fault and AxisLink Fault Code for more information
on the specific conditions that cause this fault.
In the Tag Explorer, select General System Variables, then select
AxisLink_general_fault in the Tag Window.
Setup Data Memory Fault
The motion controllers use a checksum to verify the integrity of the
power-up setup parameter values in memory. Whenever the setup values
are changed via the motion controller’s setup menus, a new checksum is
calculated and stored with the data. A setup data memory fault
(Global_fault = 7) indicates that the stored checksum is not the same as
the current checksum and that memory has been corrupted.
If a setup data memory fault occurs—indicating corruption of the setup
parameters—verify all setup parameter values by going through the setup
menus in the motion controller. See Setup in the Installation and Setup
manual for your motion controller for information on using the setup
menus.
Important: To avoid future data corruption, be sure to lock the memory
using the front panel keyswitch or the memory unlock
jumper, after re-entering the setup values.