What Should i pay attention when change the mode ?

What Should i pay attention when change the mode to aviod a lager change of volt?
for example positon control change to press control

If both position and pressure are tuned well, the Control Output voltage change should be minimal. However, the Enter Pressure/Force control commands all have an Integral Preload parameter that can be used to minimize and Control Output change if it occurs. The Integral Preload amount (as given in percent) will be added to the PFID output. The PFID output is in percentage (-100% to +100%), and it is then converted to the Control Output volts. Most systems do not need any Integral Preload, but if it is needed, it is usually small, such as 5 or less.