Chapter 8 Control Operation; Lead-Lag (M+P_Llag) - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

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CONTROL OPERATION
The following FBs control operation of lead-lag, integration, derivative, high/low limiter, variation rate limiter, dead band,
bumpless transfer, and analog memory.
To set initial values of public variables of the general process FB arranged on a user-defined tag FB in "FB
Property" of the engineering tool, refer to the following.
 GX Works3 Operating Manual
8.1

Lead-Lag (M+P_LLAG)

M+P_LLAG
When the operation signal (INVLD) is FALSE, this function block performs lead-lag compensation to the input (IN) and outputs
(OUT_) the result.
FBD/LD
M+P_LLAG
INVLD OUT_
IN
■Block diagram
M+P_LLAG
Operation signal
INVLD
TRUE: Invalid
FALSE: Valid
Lead-lag
IN
compensation
processing
Setting data
■Input/output variable
Variable Description
name
INVLD Operation signal
IN Input
OUT_ Output
■Public variable (operation constant)
Variable Description
name
T1_ Lag time (lag time constant)
T2_ Lead time (lead time constant)
OUT_
Recommended
range
TRUE: Invalid
FALSE: Valid
-999999 to 999999
-999999 to 999999
Recommended
range
0 to 999999[s]
0 to 999999[s]
Type Data type
Input variable BOOL
Input variable REAL
Output variable REAL
Initial value Set by Data type
1.0 User REAL
1.0 User REAL
8 CONTROL OPERATION
8.1 Lead-Lag (M+P_LLAG)
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