Rockwell Automation D64046.5.1 U MNL WIN DDMC - Manual (Page 154)

Reference Information
Appendix A
A-10
For example, consider that we have 2 DFA instructions with 8 I/O
(4 inputs defined):
2 DFA instructions (194 words + 4 inputs (20)) =
2 (194 + 80) =
2 (274) =
548 words of program file memory
The control status bits are:
Bit: Definition:
EN Rung Enable
ER Error; true if runtime error detected
ME Message Enable; true is message is to be sent
You can obtain information about the control file from the Extended Status
screen in the DFA instruction. The Extended Status screen provides the
status of specific bits in the control file in user-friendly terms.