CompactLogix 5380 troubleshooting answers
1 question with answers cited from the manufacturer manuals.
- 0CompactLogix 5380 major fault Type 4 Code 20 after download?
A Type 4 Code 20 major fault on a CompactLogix 5380 controller, especially after a new routine download, points to a program error. This typically means an array subscript is too large or there's an invalid .POS or .LEN …