I have changed 37) JOG SPEED 1 to a negative amount but the drive still jogs forward?
This is commonly because of a misunderstanding regarding the use of the jog input on terminal 32. For jog to be used T32 is taken high but not T33 (Start). If you take them both high, you are actually running under 39) SLACK SPEED 1, see the truth table in the JOG CRAWL SLACK block diagram. The solution is to change the external sequencing so that jog and start are mutually exclusive or use 39) SLACK SPEED 1 as your jog speed reference.