Wade Greene

What is the best way you have found to do simple step sequence programming for machine logic in ladder. I know SFC is the better option but most customer are unfamiliar and wont let it be used. I am talking about step 1, step 2, step 3, etc. There is the moving the step # into a register. Using an INT or DINT bits for each sequence. Latching the rung when done or using latch bits. 

I am in the process of replacing a Siemens S5 155U system. The system has 8 racks of IO and I want to replace a rack at a time. Can l remove the wiring harness from the front of the IO cards on a particular rack (leave the rack and the communication cable) without causing a fault in the processor?

I am in the process of converting a S5 to Ctlx. While I understand S5 STL pretty good I do have a question about it. Some of the STL's have multiple outputs. For example :A ( :A I0.0 :A I0.1 :A I0.2 :) :O I1.0 := O0.0 : :A I3.0 :A I3.1 :A I3.2 :=O1.0 CTLX LAD BST XIC I000_0 XIC I000_2 XIC I000_3 NXB XIC I001_0 BND OTE O000_0 XIC I003_0 XIC I003_1 XIC I003_2 OTE O000_1 Is this correct?