LSIS XBF-AH04A - Page 571

XGB Analog edition manual
15 - 22
occurs, the error code is indicated in the error code area of a loop. For more information about
type of error codes and measures, refer to 15.5. In the area as monitoring area, it is changed to
the current run status by PLC although a user enters any value temporarily.
(b) PID Flag area by loops
PID flag areas by loops are allocated between K1216 ~ K1855 and for totally 16 loops, each 40
words is allocated per loop. Therefore, the individual data areas of ‘n’ th loop are between K
(1216+16*n) ~ K (1255+16*n). Every setting of the PID flag areas by loops may be changed
during PID control operation. Once the settings are changed, they are applied from the next PID
control cycle.
1) _PIDxx_SV (PID xx Loop SV setting)
It sets/indicates the SV of PID control of ‘xx’ th loop. For more information about SV, refer to
15.2.3 PID control parameter setting. The available scope is between -32,768 ~ 32,767.
2) _PIDxx_T_s (PID xx Loop operation cycle)
It sets/indicates the operation cycle of PID control of ‘xx’ th loop. For more information about
operation cycle, refer to 15.2.3 PID control parameter setting. The available scope is between
100 ~ 65,535.
3) _PIDxx_K_p (PID xx Loop proportional constant)
It sets/indicates the proportional constant of PID control of ‘xx’ th loop. For more information
about proportional constant, refer to 7.2.3 PID Control Parameter Setting. The available scope
is real number (-3.40282347e+38 ~ -1.17549435e-38 , 0 , 1.17549435e-38 ~ 3.40282347e+38).
If it is, however, set as 0 and lower, the PID control of a loop generates an error and does not
work.
4) _PIDxx_T_i (PID xx Loop Integral time)
It sets/indicates integral time of PID control of ‘xx’ th loop. The available scope is real number. If
it is set as 0 and lower, it does not execute integral control.
Flag name
Address
IEC type address
Unit
Scope
_PIDxx_SV
(PID xx Loop SV setting)
K1216+16*xx
%KW1216+16*xx
INT
-32,768 ~ 32,767
Flag name
Address
IEC type address
Unit
Scope
_PIDxx_T_s
(PID xx Loop operation cycle)
K1217+16*xx
%KW1217+16*xx
WORD
100 ~ 65,535
Flag name
Address
IEC type address
Unit
Scope
_PIDxx_K_p
(PID xx Loop proportional constant)
K1218+16*xx
%KD609+20*xx
REAL
Real number
Flag name
Address
IEC type address
Unit
Scope
_PIDxx_T_i
(PID xx Loop integral time)
K1220+16*xx
%KD610+20*xx
REAL
Real number