The Process functions

Description

The 'Process' function monitors during the active status the status of an adjustable function. This is the conditional function. Depending on the status of the conditional function an adjustable function is switched. This is the active function.
Since the 'Process' function continuously monitors the status of the conditional function, the 'process' function can be called an automating function.

Parameters

Name

Introduce here a short and clear name for the 'process' function which is being generated.

Select function to be monitored

Select the function here that has to be monitored during the active status of the 'process' function. This is the conditional function. Depending on the selected functions some function specific parameters have to be specified. Consult for this matter the description of the selected function..

Status value of the conditional function

See the ‘Condition’ function

Select the function to be executed

Select here the function which has to be switched depending on the status of the conditional function. Depending on the selected function some function specific parameters have to be put in. Consult for this matter the description of the selected function.

Operation if Activated

This parameter determines in which way manual control stays possible, next to the process function. Here 3 possibilities can be selected:

1. Continuous monitoring (ON and OFF)

the 'Process' function switches the status of the active function always equal to the wanted status of the conditional function. Manual control to execute the function is here NOT possible.

2. Continuously on if TRUE

the 'Process' function switches the status of the active function only when the status of the function to guard is equal to the set status. Manual control is possible when the guarding function is NOT true.

3. ON if TRUE & OFF if NOT TRUE (all edges)

In this case the active function can be switched at any moment independent of the status of the conditional function. The 'Process' function however will switch 'ON' the status of the active function automatically if the conditional function becomes 'TRUE' or switch 'off' if the conditional function becomes 'NOT TRUE'.

Action taken when switching off the process function

this parameter determines what has to happen with the function which has to be executed, when the 'Process' function is switched off. Here 2 settings are possible:

1. switch off output

this setting switches off the connected function.

2. not change the output

this setting conserves the status of the connected function when the 'Process' function is switched off.

Function behaviour when used on an interface

'Short

With a short push on the button the 'Process' function is switched on. From that moment on the conditional function will be monitored. Depending on the status the active function will be switched in accordance with preset parameters.

When switched off (again a short push) the process function will be switched off. The conditional function will not be monitored any more. The status of the active function will be switched off depending on the setting and is no longer monitored by the 'process' function.

Long

The operation is the same as described under 'Short'.

Operation in another function

The 'Process' function is selected in another function. Depending on the pr set target value the operation will be as follows:

On

The 'Process' function is switched on. The conditional function is being monitored continuously and the active function is switched in accordance with selected settings.

Off

The 'Process' function is switched off. The conditional function is no longer monitored. The active function is switched off, if it was preset, and is no longer controlled by the 'Process' function.

On/Off

When the other function is activated the 'Process' function is switched on. When the other function is switched off the 'Process' function is switched off.

Off/Off

When the other function is activated the 'Process' function is switched off. When the other function is switched off the 'Process' function remains switched off.

Example: protect sun blinds against wind damage when manual control stays possible.

To protect sun blinds against wind damage, a process function can be set. As 'guarding function' you can set a 'condition (e.g. named 'lot of wind') where the measured results of an anemometer are checked.
When there is too much wind, the process function will raise all the sun blinds. When using the option 'continue control (on&off)', the process function will drop the sun blinds when there is less wind. This is not wanted. We want to have the choice ourselves to decide when the sun blinds will drop.
Therefore we use the option 'continue on when 'TRUE'! When there isn't a lot of wind, the process function won't execute any action and the sun blinds can be controlled manually.