Delta DVP-SS2 User Manual

DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
3-296
Device
No.
Function Setup Range Explanation
S
3
+9:
Lower bound of
integral value
-32,768~32,767
Ex: if S
3
+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.
S
3
+10,
11:
Accumulated
integral value
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.
S
3
+12: The previous PV -32,768~32,767
The previous PV is usually for
reference. Users can clear or modify it
according to specific needs.
S
3
+13
~
S
3
+19
For system use only..
5. For S
3
+1~3, when parameter setting exceeds its range, the upper / lower bound will be
selected as the set value.
6. If the direction setting (Forward / Reverse) exceeds its range, it will be set to 0
.
7. PID instruction can be used in interruption subroutines, step ladders and CJ instruction.
8. The maximum error of sampling time T
S
= - (1 scan time + 1ms) ~ + (1 scan time). When the
error affects the output, please fix the scan time or execute PID instruction in timer interrupt.
9. PV of PID instruction has to be stable before PID operation executes. If users need to take
the value input from AIO modules for PID operation, care should be taken on the A/D
conversion time of these modules
10. For 32-bit instruction, S
3
occupies 21 registers. In the program example above, the area
designated in S
3
will be D100 ~ D120. Before the execution of PID instruction, users have to
transmit the parameters to the designated register area by MOV instruction. If the designated
registers are latched, use MOVP instruction to transmit all parameters only once.
11. Parameter table of 32-bit S
3
:
Device No.
Function
Set-point range
Explanation
S
3
Sampling time (T
S
)
1~2,000
(unit: 10ms)
Time interval between PID
calculations and updates of MV.
If T
S
= 0, PID instruction will not
be enabled. If T
S
is less than 1
program scan time, PID
instruction sets S
3
as 1 program
scan time, i.e. the minimum T
S
has to be longer than the
program scan time.

Delta DVP-SS2 Specifications

General

Brand	Delta
Model	DVP-SS2
Category	Controller
Language	English