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Ladder logic program in figure 7-3911/11/2022 Companies still generating ladder code are setting themselves up for support issues down the road when they have to train new engineers in a language no one uses anymore for machines that aren't really that old.ġ73.67.240.90 ( talk) 16:12, 25 April 2011 (UTC)Felix You know what to do. I think the days of programming like you're using relays and coils are just about over the new blood hates it, it takes longer, and the old blood is retiring. In Europe I have seen customers walk away from US OEMs that won't program in IEC ST or ANSI C. In the US, I've seen integrators (whose engineers tend to be younger) quote 20% more to write a project in ladder vs a text based language and OEMs pay it. In addition, young engineers (nearly all of them proficient in text based programming regardless of their degree) seem to universally dislike ladder, even years after becoming proficient with it. Within the US, ladder seems to only be used if the customer or OEM is or was dealing heavily with AB products. I have only seen ladder logic come out of US OEMs (not just on AB hardware), with everywhere else using IEC Structured Text, ANSI C, or automatic code generation from SimuLink. I base that claim on my work in the industry in Germany, Austria, US, China, and various Latin and South American countries with several controls platforms. I would argue that ladder is all but dead outside of the US and within the US its use perpetuated almost exclusively by controls engineers over the age of 40 that grew up with Allen Bradly. I would like to see some discussion on that topic here. There is no information here about who uses ladder logic in the sense of engineer demographics, a geographic sense, or controls company.
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