Re: Instruction List<p>> This gives you immediate access to the machine itself<p>I have no idea what that is supposed to mean, IL is no more low-level than ST, it's just another interpreted representation.<p>If somebody wants to know the main difference between PLC programming languages (and this is all about superficial syntax):<p>FUP is a sequence of essentially very simple flow charts that connect "function blocks".<p>IL looks like Assembler. You have registers and load and store instructions.<p>ST looks like Pascal. It has simple control structures like loops and checks.<p>LD is like an electrical plan (and for good reason, it is targetted at electricians who "don't know about that new-fangled computer stuff").