LSIS XBF-AH04A - Page 568

Chapter 15 PID Function (Built-in function)
15 - 19
Loop
K area
IEC type
Symbol
Data
type
Default
Description
Loop 0
K1230
%KW1230
_PID00_PV_old
INT
-
PID PV of previous cycle
K1231
%KW1231
_PID00_MV
INT
0
PID MV
K1232
%KD616
_PID00_ERR
DINT
-
PID control error
K1234
%KD617
_PID00_MV_p
REAL
0
PID MV proportional value
component
K1236
%KD618
_PID00_Mv_i
REAL
0
PID MV integral control
component
K1238
%KD619
_PID00_MV_d
REAL
0
PID MV differential control
component
K1240
%KW1240
_PID00_DB_W
WORD
0
PID deadband setting
K1241
%KW1241
_PID00_Td_lag
WORD
0
PID differential filter coefficient
K1242
%KW1242
_PID00_PWM
WORD
H’20
PID PWM junction setting
K1243
%KW1243
_PID00_PWM_Prd
WORD
100
PID PWM output cycle
K1244
%KW1244
_PID00_SV_RAMP
WORD
0
PID SV Ramp value
K1245
%KW1245
_PID00_PV_Track
WORD
0
PID PV follow-up setting
K1246
%KW1246
_PID00_PV_MIN
INT
0
PID PV min. value limit
K1247
%KW1247
_PID00_PV_MAX
INT
4000
PID PV max. value limit
K1248
%KW1248
_PID00_ALM_CODE
Word
0
PID warning code
K1249
%KW1249
_PID00_ERR_CODE
Word
0
PID error code
K1250
%KW1250
_PID00_CUR_SV
INT
0
PID SV of current cycle
K1251-1255
%KW1251-1255
Reserved
WORD
-
Reserved area
Loop 1
K1256~K1295
%KW1256~%KW1295
-
-
-
PID Loop1 control parameter
~
Loop16
K1816~K1855
%KW1816~%KW1855
-
-
-
PID Loop16 control parameter
< Table 15.8 K area flags for PID control (continued) >
K1200 ~ K1211 areas are the common bit areas of PID loops while each bit represents the status of
each PID control loop. Therefore, each 16 bits, the max number of loops of XGB PID control
represents loop status and setting respectively. K1216 ~ K1255 areas are K areas for PID control
loop 0 and save the loop 0 setting and status. It also contains parameters such as SV, operation
cycle, proportional coefficient, integral time and differential time set in the built-in parameter window
and the XGB built-in PID function executes PID control by each device value in question. In addition,
the output data such as MV calculated and output while PID control is executed is also saved into
the K areas. By changing the values in K areas, control setting may be changed any time during
PID control.
By changing value of area, you can change control setting whenever you want
during the PID control
1) PID control flag expression : _PID[n]_xxx
 [n] : loop number
 xxx : flag function
Ex) _PID10_K_p : means K_p of loop 10.
Remark