5-8
PID algorithm
The PID algorithm is widely used in process controls. Regardless of whether the components of the (CPU) are analog or digital, the
PID control method adapts well to electronic solutions. SJ-Ether CPU digitally carries out the PID equation by solving the basic
equation of the software. The input/output module is useful for converting electronic signals to digital format (or vice versa).
There are two types of PID control in the SJ-Ether. "Position" and "Speed" are usually used in motion control. Here, however, they are
used in different senses.
The control output is calculated according to the PID position algorithm SP minus PV (deviation).
The PID velocity algorithm control output is calculated to represent the rate of change (speed) of the PV so that it is equal
to SP.
Most applications use the position shape of the PID equation. If you have not determined which algorithm to use, try the position
algorithm first. Use the PID Monitor Settings dialog box for KPP to select the algorithm you want. Also, use bit 5 of PID mode setting
1 R +00 as shown below to select the algorithm.
Note :
Since the PID algorithm selection is the most basic setting for control operation, it is recommended to avoid changing
the settings after you have configured PID control.
Note: DirectSOFT4 and DirectSOFT5 are not supported.
Be sure to use KPP Ver1. 5.0.0 or higher.
+
-
0
1
3
4
5
6
7
8
9
10
11
12
13
14
15
2
Bit
0
1
セットポイント
偏差
ループ演算
制御出力
プロセス変数
位置アルゴリズム
速度アルゴリズム
PID
モード
1
設定ワード：
R
＋
00
位置
/
速度アルゴリズムの選択
ビット
Loop calculation
Control
output
Bit
PID mode 1 setting word
Set point
Process variable
Deviation
Selection of Position / Velocity algorithm
Position algorithm
Velocity algorithm
Summary of Contents for Kostac SJ-Ether Series
Page 1: ...English version of the KOSTAC SJ Ether series user s manual SJ ETHER USER M...
Page 12: ......
Page 13: ...1...
Page 14: ......
Page 88: ......
Page 89: ......
Page 113: ...3 24 Note Refer to 6 3 3 Module Assembly for connections and locks between modules...
Page 153: ......
Page 156: ...flashing OFF Not sent H W RX Green flashing Receiving H W OFF Not received H W...
Page 161: ...4 8...
Page 221: ......
Page 310: ...Chapter 7 Maintenance...
Page 311: ......
