Allen-Bradley MicroLogix 1400 Instruction Manual page 298

efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive
296 Sequencer Instructions
(1) See Important note about indirect addressing.
(2) File Direct and File Indirect addressing also applies.
(3) Control file only.
Publication 1766-RM001A-EN-P - October 2008
You cannot use indirect addressing with: S, MG, PD, RTC, HSC, PTOX,
IMPORTANT
PWMX, STI, EII, BHI, MMI, CS, IOS, LCD, and DLS files.