LSIS XGB Series, User Manual, Page: 573 / 618

XGB Analog edition manual
15 - 24
11) _PIDxx_MV (Control MV)
The area shows the MV of
‘xx’ th PID control loop. As the area in which XGB built-in PID
operation result is output every PID control cycle, it delivers the value in the area to U device
every scanning by using commands like MOV in the program and outputs to D/A output module,
operating a drive.
12) _PID00_ERR (Present error)
T
he areas shows the current error of
‘xx’ th PID control loop. It is also used as an indicator about
how much gap the present status has with a desired status and if an error is 0, it means the
control system reaches a desired status exactly. Therefore, if control starts, error is quickly
reduced at transient state and it reaches normal state, maintaining remaining drift as 0, it could
be an ideal control system. The flag, as a dedicated monitoring, is updated although a user
directly enters it.
13) _PIDxx_MV_p, _PIDxx_MV_i, _PIDxx_MV_d (P/I/D control components of MV)
It indicates
‘n’ th loop MV by classifying proportional control MV, integral control max. MV and
differential control MV. The entire MV consists of the sum of these three components. The flag,
as a dedicated monitoring, is updated although a user directly enters it.
14) _PIDxx_DB_W (DeadBand setting)
It sets the deadband of
‘xx’ th loop. For more information about Deadband function, refer to
15.2.3 PID control parameter setting. If it is set as 0, the function does not work.
15) _PIDxx_Td_lag (Differential filter coefficient)
It sets the differential filter coefficient of
‘xx’ th loop. For more information about differential filter
coefficient, refer to 15.2.3 PID control parameter setting. If it is set as 0, the function does not
work.
Flag name Address IEC type address Unit Scope
_PIDxx_MV (control MV) K1231+16*xx %16*xx INT Unavailable
Flag name Address IEC type address Unit Scope
_PID00_ERR
(present error)
K1232+16*xx %16*xx DINT Unavailable
Flag name Address IEC type address Unit Scope
_PIDxx_MV_p
(MV proportional control component)
K1234+16*xx %KD616+20*xx
REAL Unavailable
_PIDxx_MV_i
(MV integral control component)
K1236+16*xx %KD617+20*xx
_PIDxx_MV_d
(MV differential control component)
K1238+16*xx %KD618+20*xx
Flag name Address IEC type address Unit Scope
_PIDxx_DB_W
(DeadBand setting)
K1240+16*xx %16*xx WORD 0 ~ 65,535
Flag name Address IEC type address Unit Scope
_PIDxx_Td_lag
(differential filter coefficient)
K1241+16*xx %16*xx WORD 0 ~ 65,535