DL06 Micro PLC User Manual, 3rd Edition, Rev. E
xii
Table of Contents
Bumpless Transfer ..................................................................................................8–13
Loop Alarms ...........................................................................................................8–13
Loop Operating Modes ..........................................................................................8–14
Special Loop Calculations .......................................................................................8–14
Ten Steps to Successful Process Control.................................................................8–16
PID Loop Setup ........................................................................................................8–18
Some Things to Do and Know Before Starting .......................................................8–18
PID Error Flags ........................................................................................................8–18
Establishing the Loop Table Size and Location .......................................................8–18
Loop Table Word Definitions ..................................................................................8–20
PID Mode Setting 1 Bit Descriptions (Addr + 00) ...................................................8–21
PID Mode Setting 2 Bit Descriptions (Addr + 01) ...................................................8–22
Mode/Alarm Monitoring Word (Addr + 06) ...........................................................8–23
Ramp/Soak Table Flags (Addr + 33) .......................................................................8–23
Ramp/Soak Table Location (Addr + 34) ..................................................................8–24
Ramp/Soak Table Programming Error Flags (Addr + 35).........................................8–24
Configure the PID Loop..........................................................................................8–25
PID Loop Tuning ......................................................................................................8–40
Open-Loop Test .....................................................................................................8–40
Manual Tuning Procedure ......................................................................................8–41
Alternative Manual Tuning Procedures by Others ...................................................8–44
Tuning PID Controllers ...........................................................................................8–44
Auto Tuning Procedure ..........................................................................................8–45
Use DirectSOFT 5 Data View with PID View ...........................................................8–49
Open a New Data View Window ............................................................................8–49
Open PID View .......................................................................................................8–50
Using the Special PID Features ...............................................................................8–53
How to Change Loop Modes .................................................................................8–53
Operator Panel Control of PID Modes ....................................................................8–54
PLC Modes Effect on Loop Modes ..........................................................................8–54
Loop Mode Override ..............................................................................................8–54
PV Analog Filter ......................................................................................................8–55
Creating an Analog Filter in Ladder Logic ...............................................................8–56
Use the
Direct
SOFT Filter Intelligent Box Instructions ............................................. 8-57
FilterB Example ....................................................................................................... 8-57
Ramp/Soak Generator .............................................................................................8–58
