LSIS XGB Series, User Manual, Page: 568 / 618

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