Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual - Manual (Page 212)

Chapter
16
16-1
EAF Process Control Instructions
This chapter describes the EAF Process Control instructions, which are a
feature of the Mini-PLC-2/17 processor only.
Table 16.A
EAF Function Numbers
If you want to perform
an operation of this type
Use this
function number
Only the MiniĆPLCĆ2/17 can perform these functions
PID
Averaging
Standard Deviation
Set Clock
Set Date
Set Leap Year and Day of the Week
Read Clock
Read Date
Read Leap Year and Day of the Week
(06)
(07)
(27)
(10)
(11)
(12)
(15)
(16)
(17)
The PID EAF instruction lets the Mini-PLC-2/17 processor control
regulating process loops for such quantities as pressure, temperature, flow
rate, or fluid level (Figure 16.1). You configure your PID control
instructions by selecting the desired features.
Figure 16.1
Closed Loop Control
PV
SP
E PID
Equation
FFWD
or
Bias
P
r
o
c
e
s
s
10371-I
Σ Σ
Chapter Objectives
PID Control