Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 348

Process control function blocks
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■Public variable (operation constant)
Variable name
Description
IN_NMAX
Input High Limit
IN_NMIN
Input Low Limit
IN_HH
High Limit Range Error
IN_H
High Limit Range Error Reset
IN_L
Low Limit Range Error Reset
IN_LL
Low Limit Range Error
PID_MTD
Derivative Gain
PID_DVLS
Large Deviation Alarm Hysteresis
PID_PN
Reverse Action/Direct Action
PID_SVPTN_BO
Setting Value (SV) Used
OUT1_NMAX
Output Conversion High Limit
OUT1_NMIN
Output Conversion Low Limit
■Public variable (others)
• Simulation processing
Variable name
Description
SIMIN
Simulation Input
SIMOUT
Simulation Output
• Control mode change processing (MCHG function)
Variable name
Description
MODEIN
Mode Change Signal
E_
Enable Mode Change
*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 FB, refer to the following.
Page 491 PID
Processing details
This tag FB consists of the following function blocks.
Item
IN function
PHPL function
PID function
OUT1 function
MCHG function
Operation error
An error may occur in a function block that is used in a tag FB. For details on the error, refer to corresponding function blocks.
12 LOOP TAG
346
12.2 Velocity Type PID Control (Disable Tracking for primary loop) (M+M_PID)
*1
Function block
M+P_IN
M+P_PHPL
M+P_PID
M+P_OUT1
M+P_MCHG
Recommended range
Initial value
-999999 to 999999
100.0
-999999 to 999999
0.0
-999999 to 999999
102.0
-999999 to 999999
100.0
-999999 to 999999
0.0
-999999 to 999999
-2.0
0 to 9999
8.0
0 to 100
2.0
0: Reverse action
0
1: Direct action
TRUE: Not used
TRUE
FALSE: Used
-999999 to 999999
100.0
-999999 to 999999
0.0
Recommended range
Initial value
NMIN to NMAX
0.0
NMIN to NMAX
0.0
Recommended range
Initial value
1 to 5
0
1: MAN
2: AUT
3: CAS
4: CMV
5: CSV
TRUE: Execute
FALSE
FALSE: Stop
Reference
Page 144 M+P_IN
Page 291 M+P_PHPL
Page 196 M+P_PID
Page 149 M+P_OUT1
Page 338 M+P_MCHG
Set by
Data type
User
REAL
User
REAL
User
REAL
User
REAL
User
REAL
User
REAL
User
REAL
User
REAL
User
INT
User
BOOL
User
REAL
User
REAL
Set by
Data type
User
REAL
System
REAL
Set by
Data type
User
INT
User
BOOL

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