The PID control scheduling is shown in the flowchart below. This provides a more detailed description of the "PID control"
tasks in the CPU scan flow chart. Pointer "I" and pointer "J" correspond to PID control with delays (> 2 seconds) and speeds
(
≦
2 seconds), respectively. If you specify some fast control there, the flow chart uses the J pointer for the increment from
PID control 1 to the last PID control. The I pointer increases once per scan, and the slow PID control is updated. Except for
different rates, both the I and J pointers circulate at the highest number of loops from 1. Their combined operations continue
to update all PID controls properly.
PID
ループタスク終了
ループサンプル時間≦
2
秒：
ループサンプル時間
> 2
秒
PID
ループタスクの開始
いいえ
ループ
J
のサンプル
レート≦
2
秒？
はい
いいえ
ループ
J
は時間切れか？
はい
ループ
J
の
PID
演算
J >
ループ合計か？
いいえ
はい
J
＝
J
＋
1
J
＝
0
ループ
I
は時間切れか？
いいえ
はい
ループ
I
の
PID
演算
I
＝
I
＋
1
I >
選択した
ループ合計？
いいえ
はい
I
＝
0
Loop sample time
≦
2 sec
Loop sample time
＞
2 sec
Start of PID loop tasks
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
Loop J sample
rate
≦
2 sec?
Is Loop J timeout?
Loop J PID
calculation
Loop total?
Is Loop I timeout?
Loop I PID
calculation
I > selected
loop total?
End of PID loop task
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: ......
