Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 53

■Position Type PID Control (Enable Tracking for primary loop/Enable Tracking from secondary
loop)
Function block symbol Processing details
M+P_PIDP_EX_T_ Performs PID operations using process variable differential, inexact differential, and position type,
and outputs the result.
It also allows manipulated value bumpless switching and tracking from the primary loop and
secondary loop at a change of control mode.
■Position Type PID Control (Disable Tracking for primary loop/Enable Tracking from secondary
loop)
Function block symbol Processing details
M+P_PIDP_EX_ Performs PID operations using process variable differential, inexact differential, and position type,
and outputs the result.
It also allows manipulated value bumpless switching and tracking from the secondary loop at a
change of control mode.
■Sample PI Control (Enable Tracking for primary loop)
Function block symbol Processing details
M+P_SPI_T Performs PI control during operating time (ST_) and outputs the result (MV). This function block
holds the output (MV = 0) during hold time (HT). The primary loop can be tracked.
■Sample PI Control (Disable Tracking for primary loop)
Function block symbol Processing details
M+P_SPI Performs PI control during operating time (ST_) and outputs the result (MV). This function block
holds the output (MV = 0) during hold time (HT).
■I-PD Control (Enable Tracking for primary loop)
Function block symbol Processing details
M+P_IPD_T Controls values to slowly respond to a change of the setting value (SV) without any shocks and
outputs the result (MV) by using the process variable (PV) in the proportional term and derivative
term. The primary loop can be tracked.
■I-PD Control (Disable Tracking for primary loop)
Function block symbol Processing details
M+P_IPD Controls values to slowly respond to a change of the setting value (SV) without any shocks and
outputs the result (MV) by using the process variable (PV) in the proportional term and derivative
term.
■Blend PI Control (Enable Tracking for primary loop)
Function block symbol Processing details
M+P_BPI_T This function block is used when the control amount vibrates in a short period but is stable in a long
period. The primary loop can be tracked.
■Blend PI Control (Disable Tracking for primary loop)
Function block symbol Processing details
M+P_BPI This function block is used when the control amount vibrates in a short period but is stable in a long
period.
■High/Low Limit Alarm Check
Function block symbol Processing details
M+P_PHPL Performs the high high limit/high limit/low limit/low low limit checks and the variation rate check to
the input (PVPI) and outputs the results. If a value has exceeded an allowable range, an alarm
occurs.
■2 position ON/OFF Control (Enable Tracking for primary loop)
Function block symbol Processing details
M+P_ONF2_T Performs two-position (on/off) control. The primary loop can be tracked.
3 LISTS OF PROCESS CONTROL FUNCTION BLOCK
Reference
Page 243
M+P_PIDP_EX_T_
Reference
Page 251
M+P_PIDP_EX_
Reference
Page 259 M+P_SPI_T
Reference
Page 265 M+P_SPI
Reference
Page 270 M+P_IPD_T
Reference
Page 276 M+P_IPD
Reference
Page 281 M+P_BPI_T
Reference
Page 286 M+P_BPI
Reference
Page 291 M+P_PHPL
Reference
Page 295
M+P_ONF2_T
51
3.2 Tag Access FBs
3