Motor 1 is on IF lamp is on AND pressure is low AND either.1 motor is required and the alternating bit is 0.Motor 2 is on if lamp is on AND pressure is low AND either.1 motor is required and the alternating bit is 1.Motor 1 is on if lamp is on AND pressure is low AND either.It appears that Rung 005 is supposed to be a flip-flop that triggers on the rising edge of I:1/2 (pressure sw mtr 1) a flip-flop is a simpler circuit than that see the first image below (from here) although that is the same number of instructions, it is still cleaner than your version. * On further reflection, I think they are not correct. That being the case, the logic on the left side of Rung 003 can be replaced. Not that I am sure they are correct in the first place*, but the current logic in Rungs 001 and 002 can be replaced by a single rung. Is there a second pressure switch with a lower setpoint? (whoops, never mind, yes cf.How is it determined that 2 compressors need to be on?.both compressors off when there is adequate pressure (I:1/2 is 0), and 1 or 2 compressors on when there is inadequate pressure (I:1/2 is 1)? Logix 5000? (whoops, never mind, LogixPro in your title).Can you provide a schematic and a summary of inputs (pressure switches, momentary push buttons, switches, etc., and outputs)?.I am not sure we know enough about the process
