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This version is more to the point, has more examples and less philisophical ramblings. See attached pdf. ******* Status Point Energize (STE) – An Easier Way to Keep Track of Process Status Let’s look at the OTE instruction. The OTE instruction turns the referenced bit on when the rung in...

To Skogsgurra comment, The situation I describe can't be initialized programatically. The point is that there is a carrier between two switches. Before the processor mode switch the system correctly denoted a carrier present because SW1 was made and SW2 was not made yet. After the mode...

The ability to define actions for the false state is merely a convention. If you define an action for the false state that is pretty much a latch/unlatch. *****Reply******* There is a little more to being able to define actions for the false state than latch/unlatch. ***************** I...

This instruction is only posiable due to features provided fairly recently in PLCs. Specifically, the ability to provide logic for when a rung in condition is false in a user defined instruction. Review the STE instruction to see what I'm talking about.

100 % recycled posting....What does this mean? If you've seen this content before, please tell me where so I can review it.

It would be difficult to sell something that has already been given away. I wrote the STE instruction and found it useful. I would like to know if other people find it useful. If you like, try the instruction. If not don't.

The pdf version did not get attached to the original post. Here it is.http://files.engineering.com/getfile.aspx?folder=c5b0a8ec-728e-4cbd-8cd1-5cbcbc93ba13&file=Status_Point_Energize.pdf

Status Point Energize (STE) – An Easier Way to Keep Track of Process Status Let’s first look at the reasons the STE instruction was written. The first person to provide me with any kind of PLC programming guidance was an electrician. The bit of advice that has proved most useful over the...