MKS 651C - How to Determine and Change the Control Mode

Chapter Six: Remote Operation How To Determine and Chan
g
e the Control Mode
65
How To Determine and Change the Control Mode
The 651 controller is initially configured for PID control. Follow the steps below to change the
control mode setting.
1. To determine which control mode is currently selected, issue the request:
R51
ENTER
The 651 controller will return the following response:
V
value
where
value
is:
0 = Self-Tuning control
1 = PID control
2. To change the control mode, issue one of the following two commands.
For Self-Tuning control:
V0
ENTER
For PID control:
V1
ENTER
3. If you choose Self-Tuning control, issue the following command to learn the system:
L
ENTER
The 651 unit will “learn” the characteristics of your system.
Caution
During the learn process, the 651 controller moves the valve from the
opened to the closed position. Be sure your system is set up to allow
the valve to move from full open to full closed.