Rockwell Automation 1785-Vx0B, D17856.5.9 PLC-5 VME VMEbus Programmable Controllers User Manual - Manual (Page 58)

Chapter 4
Ladder-Program Interfaces
4-11
Error Codes
These are errors reported during the repeated continuous-copy operations
initiated by the continuous-copy-to-VME and continuous-copy-from-VME
commands. The existence of the error can be determined by examining the
copy-to-state and
copy-from-state fields in the command control register.
The error code itself can be found in the VME status file.
Code Explanation
01H VMEbus transfer error (VME bus error)
07H Bad data address
FDH Length specified as 0 or too large
FEH Last end-of–opy interrupt not acknowledged
As well as being able to generate VMEbus interrupts, the PLC-5/VME
processor can receive interrupts generated by itself and other cards in the
system. You can enable or disable the function of receiving any or all of
the seven VME interrupt levels using your programming software.
See your programming software documentation set for information about
how and where to enable or disable this function.
Your ladder program must clear the Received field for a certain interrupt
level, located in word 24 of the VME status file, so that the ladder program
can recognize another interrupt at that level. The update field in the VME
status file must also be set to one to reflect the fact that the VME status file
has changed and is ready to receive new interrupt information.
VMEbus Interrupts