PID (94)
PID (94)
ID 94
|
Application: |
PLC |
SIM |
Group: MATH
Short description:
The function performs the operation of the PID controller.
Inputs (5):
|
no. |
type |
impulse |
mark |
notes |
|
1 |
I |
no |
IN |
Real type input |
| 2 | R | no | propg | Proportional gain |
| 3 | R | no | intg | Integral gain |
| 4 | R | no | derivg | Derivative gain |
| 5 | B | no | intreset | Signal resetting the integral value |
Outputs (1):
|
no. |
type |
impulse |
mark |
notes |
|
1 |
R |
no |
OUT |
Function output value |
Settings:
|
no. |
type |
mark |
notes |
|
1 |
R |
MAX_INT |
Maximum integral value |
| 2 | R | MIN_INT | Minimum integral value |
Function operation:
The PID function performs the operation of the PID controller. When creating a function block, the value range of the integral is set with the variables MAX_INT and MIN_INT. The PID controller parameters are assumed on the inputs of the propg, intg, derivg functions, the value of proportional gain, integral and derivative, respectively. The INTRESET input is used to reset the value of the current integral. At the IN input, the function accepts an input signal, on the basis of which the PID controller response is then generated, returned by the function block at the OUT output.
R registers and M markers used:
|
no. |
name |
description |
R - read, W - write |
|
R3600 |
_Control_Loop_Frequency |
Main control loop frequency | R |