Local Work Memory - Mitsubishi MELSEC-Q series Programming Manual

3.2

Local Work Memory

Local work memory is used as a temporary storage area in process control instruction operation. (The memory is used for
each micro block.)
The following instructions use the local work memory.
Instruction
S.LLAG (Lead-Lag)
S.D (Derivative)
S.DED (Dead time)
S.FLT (Standard filter)
S.BUMP (Bumpless transfer)
S.AT1 (Auto tuning)
S.FG (Function generator)
S.IFG (Inverse function generator)
[Block diagram]
[Ladder diagram]
Operation constant setting
Normal ON
S.LLAG
The application of the local work memory changes depending on the used instruction. Refer to the explanation section of the
corresponding instruction.
26
The system stores the midway operation results.
(For system use only)
The user stores the coordinate values (Xn, Yn) of a function
generator. Operations are performed based on these values.
Input data setting Operation constant setting
Process control
instruction execution
Operation result
Block memory
R0 R100 R20 R200
Remarks
Data for operation
Local work
memory
Data after operation
Instruction name
Input data head device
Block memory head device
Operation constant head device
Local work memory head device
S.LLAG (Lead-Lag)
R0
R100
R20
R200