Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 162

■Public variable (others)
• Simulation processing
Variable Description
name
SIMOUT Simulation Output
• MV compensation processing
Variable Description
name
MV_CMPOUT Output for MV compensation
*1 Read or write the variables using a program. They are not displayed on "FB Property" of the engineering tool.
■Tag data
For details on tag data that is read or written with this tag access FB, refer to the following.
Page 501 2PIDH
Processing details
■Input addition
A tentative manipulated value (T) is calculated from the input value (MV).
(MV is output from an FB (such as M+P_PID) before this FB every control cycle (CT).)
ΔMV input (MVD)
ΔMV1
MVP=T
ΔMV1
Execution cycle (ΔT)
Control cycle (CT)
T = MV + MVP
MVP = T
MV: Input value to input (MVD), MVP: MV internal operation value, T: Tentative manipulated value
• When the control mode is switched from MAN or CMV to AUT or CSV, a manipulated value (MV) is stored in the MV
internal operation value (MVP) to avoid sudden changes of the manipulated value at switching.
• During data tacking, MV is 0 and the manipulated value (MV) is stored in the MV internal operation value (MVP).
■MV compensation
This function block performs compensation processing to the tentative manipulated value.
Condition
MVCMP_EN = TRUE
MVCMP_EN = FALSE
MVCMP_EN: MV compensation execution condition
T: Tentative manipulated value
MV_CMPIN: MV compensation value
MVCMP_MODE: MV compensation mode
9 I/O CONTROL
160
9.4 Output Processing-3 with Mode Switching (With Input Addition and Compensation) (M+P_OUT3_)
*1
ΔMV2
ΔMV2
Control cycle (CT)
MVCMP_MODE = 0 (addition)
MVCMP_MODE = 1 (replacement)
MVCMP_MODE = 0 (addition)
MVCMP_MODE = 1 (replacement)
Recommended Initial value
range
NMIN to NMAX 0.0
Recommended Initial value
range
-999999 to 999999[%] 0.0
ΔMV3
ΔMV3
Control cycle (CT)
Set by Data type
System REAL
Set by Data type
System REAL
t
t
Processing result
T + MV_CMPIN
MV_CMPIN
T
T