What instruction passes a false condition if Source A and Source B values are equal, or if Source A's value is greater than Source B's value?

The instruction that passes a false condition if Source A and Source B values are equal, or if Source A's value is greater than Source B's value, is the LES (Less Than) instruction. This instruction evaluates whether the value of Source A is less than the value of Source B. It will return a true condition only when Source A is indeed less than Source B.

In situations where Source A equals Source B or is greater than Source B, the LES instruction will yield a false condition. Thus, it effectively determines when one value is less than another, which directly aligns with the requirement stated in the question.

Understanding the role of the LES instruction is important as it allows for conditional branching within programmable controller logic, enabling operations based on comparative evaluations of data inputs. Other instructions, such as MOV, GRT, and SUB, serve different purposes and do not fulfill the condition outlined in the question about equality or greater-than comparisons.