Delta DVP-ES2/EX2/SS2/SA2/SX2/SE y In this control mode, PID operation can be selected as Automatic, Forward, Reverse and

3. Instruction Set
3-245
Device
No. Function Set-point range Explanation
S3+9,
10: Lower bound of output
value (MV) , 32-bit
-2,147,483,648
~
2,147,483,647
Ex: if S3+7 is set as -1,000, MV will
be -1,000 when it is smaller than
-1,000.
S3+11,
12: Upper bound of integral
value, 32-bit
-2,147,483,648
~
2,147,483,647
Ex: if S3+8 is set as 1,000, the
integral value will be 1,000 when it
is bigger than 1,000 and the
integration will stop. S3+8 has to
be bigger or equal S3 +9;
otherwise the upper bound and
lower bound value will switch.
S3+13,
14: Lower bound of integral
value, 32-bit
-2,147,483,648
~
2,147,483,647
Ex: if S3+9 is set as -1,000, the
integral value will be -1,000 when
it is smaller than -1,000 and the
integration will stop.
S3+15,
16: Accumulated integral
value, 32-bit
Available range
of 32-bit floating
point
The accumulated integral value is
usually for reference. Users can
clear or modify it (in 32-bit floating
point) according to specific needs.
S3+17,
18: The previous PV, 32-bit -2,147,483,648
~2,147,483,647
The previous PV is usually for
reference. Users can clear or
modify it according to specific
needs.
S3+19,
20 For system use only.
12. The explanation of 32-bit S3 and 16-bit S3 are almost the same. The difference is the capacity
of S3+5 ~ S3+20.
PID Equations:
1. When control mode (S3+4) is selected as K0, K1, K2 and K5:
y In this control mode, PID operation can be selected as Automatic, Forward, Reverse and
Automatic with MV upper/lower bound control modes. Forward / Reverse direction is
designated in S3+4. Other relevant settings of PID operation are set by the registers
designated in S3 ~ S3+5.