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I have 2 bool arrays
key_alarms: ARRAY[0..0] OF ARRAY[0..15] OF bool;
no_alarms: ARRAY[0..0] OF ARRAY[0..15] OF bool;
no_alarms is an empty array -all false or all 0's
I would like to compare that if any bool of key_alarms is high/true/1, set another bit.
I have tried GT and NE functions with these 2 arrays as inputs and receive an error as below.
I declared as you said. Still have the same issue. In logix I think this is a file bit compare FBC function. Cannot seem to find the similar functiion for codesys.
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Anonymous
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2017-03-21
Originally created by: scott_cunningham
A BOOL is not a BIT (BOOLs in CoDeSys are byte-sized by default). So you are really trying to compare a structure (a chunk of bytes). IF Struct1 = Struct2 will not work - you cannot also do Struct1 := Struct2. You have to compare each element. Your hardware source or the system libraries should have a function (for copy, I know there is a SysMemCopy or something like that). Sorry, I am not in front of my PC, so I cannot give you the exact item.
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I have 2 bool arrays
key_alarms: ARRAY[0..0] OF ARRAY[0..15] OF bool;
no_alarms: ARRAY[0..0] OF ARRAY[0..15] OF bool;
no_alarms is an empty array -all false or all 0's
I would like to compare that if any bool of key_alarms is high/true/1, set another bit.
I have tried GT and NE functions with these 2 arrays as inputs and receive an error as below.
[ERROR] garagepi: key_faults Device: PLC Logic: Application: C0068: Compare not possible on objects of type 'ARRAY [0..0] OF ARRAY [0..15] OF BOOL'
What function would allow me to compare these 2 arrays of inputs within a ladder program?
Correct declaration of bool array may help.
I declared as you said. Still have the same issue. In logix I think this is a file bit compare FBC function. Cannot seem to find the similar functiion for codesys.
Originally created by: scott_cunningham
A BOOL is not a BIT (BOOLs in CoDeSys are byte-sized by default). So you are really trying to compare a structure (a chunk of bytes). IF Struct1 = Struct2 will not work - you cannot also do Struct1 := Struct2. You have to compare each element. Your hardware source or the system libraries should have a function (for copy, I know there is a SysMemCopy or something like that). Sorry, I am not in front of my PC, so I cannot give you the exact item.
Thank you. I changed array[0..15] of Bool to array[0..0] of INT. These I can compare with math operators.