Selecting Mode Of Operation; All Mode - Allen-Bradley Logix5000 Reference Manual

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Array (File)/Misc. Instructions (FAL, FSC, COP, CPS, FLL, AVE, SRT, STD, SIZE)

Selecting Mode of

You can mix data types, but loss of accuracy and rounding error might occur and

the instruction takes more time to execute. Check the S:V bit to see whether the

result was truncated.

For relay ladder instructions, bold data types indicate optimal data types. An

instruction executes faster and requires less memory if all the operands of the

instruction use the same optimal data type, typically DINT or REAL.

For FAL and FSC instructions, the mode tells the controller how to distribute the

array operation.

If You Want To

Operate on all of the specified elements in an array before

continuing on to the next instruction

Distribute array operation over a number of scans

Enter the number of elements to operate on per scan (1-

Manipulate one element of the array each time the rung-

condition-in goes from false to true

In All mode, all the specified elements in the array are operated on before

continuing on to the next instruction. The operation begins when the

instruction's rung-condition-in goes from false to true. The position (.POS) value

in the control structure points to the element in the array that the instruction is

currently using. Operation stops when the .POS value equals the .LEN value.

Rockwell Automation Publication 1756-RM003N-EN-P - October 2011

Select This Mode

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