12/26/2023 0 Comments Equ and equal definition![]() This case will always evaluate to FALSE which should not be used.Data classification: quantile and equal interval Data Classification In other words, you may not use the EQU instruction with “Operand A” set to 7 and “Operand B” set to 20. Note 3 – The user may not specify a comparison of two constants within RSLogix 500.This limitation is not present in all software packages. The constant must be specified within “Operand B”. Note 2 – When working with constants, RSLogix 500 will not allow the user to use the constant in the “Operand A” field.In an instance where the value is changed in other locations for only a brief duration, the EQU comparison may result in unforeseen outcomes. Otherwise, the instruction will evaluate to FALSE. Note 1 – Both operands need to be exactly the same while the rung containing the EQU instruction is being scanned.Float – You may specify each operand to be of “Float” or “Real” type.Integer – You may specify each operand to be of “Integer” type.These value can be INTs, DINTs, or FLOATs. The EQU can be used to compare two values of identical types. Since they are both “0”, the EQU evaluates to TRUE in this case. ![]() It demonstrates the fact that you can use the value of a Timer Construct to compare it to a value of a similar type. The last instruction will also evaluate to TRUE. The second EQU instruction will evaluate to TRUE due to the fact that N7:2 and N7:3 values are identical both are equal to “0”. The first instruction will evaluate to FALSE because the two values stored within the “Source A” and “Source B” elements are not equal to each other. We’re using three different EQU instructions to demonstrate the capabilities of the instruction.
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