When using the LL50A to create ladder programs, which ladder program edit mode should I use: "input ladder calculation," "output ladder calculation," or "user ladder"?

Generally you should create programs in "user ladder" mode. If needed, you can rewrite the input ladder and output ladder portions.

Advanced Application UT75A

Temperature Controller with increased monitoring and operating capabilities
LL50A

Build and set parameters and ladder programs with advanced software
Mid-level UT55A/UT52A

Increase monitoring and operating capabilities
UP35A/UP32A

Program Controllers with 4 patterns, 40 segments, and ladder sequence functions
UP55A

Program controller with 30 patterns, simultaneous monitoring, and ladder sequence function
UT32A-D

Digital Indicating Controller with selectable 2-loop control and intuitive design
UT35A/UT32A

Increase monitoring and operating capabilities