Yaskawa Portable Control Display Unit - Manual (Page 25)

5 FAULT MENU
19 Displaying the Error List
01/22/96
Note: Faults that are declared by the
Kernel of the DCU will be
displayed as having a PAC
block number of 00000. The
Kernel is the fixed (i.e. non-
changeable) code for the DCU
microprocessor which forms the
operating system of the
microprocessor. It controls the
generation of the various scans,
the order of execution of the PAC
tasks, the information passed to
and from the PAC tasks and the
execution of other standard code
not directly associated with the
PAC tasks such as the control of
the CDU or LAN handler. The
DCU (Drive Control Unit) refers
to the hardware and software used
to control the drive. Specifically,
it refers to the hardware and
software associated with the
68000 microprocessor. The DCU
software includes the variable
software generated as a result of
the PAC program and the fixed
software (Kernel) used to control
execution of the PAC program.