Rockwell Automation 1336T Function Block Prog. Manual, Series A/B - Manual (Page 167)

6–5 Handling Exceptions — Faults and Warnings
1336 FORCE — 5.9 August 1995
Important: With the exception of function block link processing
faults, you should perform a function block BRAM Init
operation after any function block faults occur. You
then need to perform a Recall or download the program
again.
Link Processing Fault
If a link processing fault occurs, the execution list has been compiled
and all the blocks are valid. Link processing faults are actually
generated after the compilation is complete. If no other faults
occurred, you can:
1. Adjust the invalid links.
2. Clear the fault queue.
The function block application is then enabled for execution without
being re–compiled.
Important: You cannot clear function block faults with a clear fault
operation without first addressing the problem. The
function block system will not make an assumption
about what to do with an illegal link. You must either
clear the link to this node or reconnect the node to a
valid node. You can then use the clear faults mechanism
to clear the faults and allow the drive to run.
I/O Node Limit Fault
If you receive an I/O node limit fault, you have created more than
799 function block nodes due to the number and type of blocks you
entered into your execution list. You need to:
1. Perform a function block BRAM Init.
2. Remove extra event blocks to reduce the number of nodes.
Memory Limit Fault
If you receive a memory limit fault, the system is out of dynamic
RAM. You need to:
1. Perform a function block Init.
2. Remove extra function blocks.