Creates compound object configured as three-way valve.
After connecting the
variables of this object by the "
PP - Data binding to Pma object property" data binding to the configured variables of the
PmaData object, the real status of such device is indicated.
The
Status and
Mode variables are used for such purpose. The value of the
Mode variable defines the working mode of the device and is preset as follows:
1 = automated regulation mode
2 = manual regulation mode
3 = manually ON
4 = manually OFF
5 = disabled (for pump)
Any other value causes error signal.
The
Status variable represents the device status and the default (preconfigured) meaning of individual bits of this variable is apparent based on the information present at the beginning of the "
Draw" tab script of the
PmgCanvas object.
All these variables in the
Pmg object are read only.
Displayed symbols and values
Symbols A, M, E, X - indicate the status of the device (A = AUTO, M = MANUAL, E = ERROR, X = SHUT DOWN) and also differ in background color.
The value CurrVal - is located to the left or to the right of the symbol and represents the real current signalized position (or velocity).
The value ReqM - is located above or below the symbol and represents manually defined desired value (can be written)
The value ReqA - is the last value and represents the value requested by the device from regulation
The
devId parameter serves as device identifier.
The mode change control is executed by means of the
onMenuFill and
onMenuSelect events. It is supposed in the event that the
panel method DeviceCmd exists with paramaters
devId and
mode that commands the control system based on user request to change the device mode. There is an example script present in the event that emulates the reaction of the control system.
These configurators can be set before the preconfiguration is created:
| Object name | Name (identifier) of the Pmg object. It is used to obtain the Pmg object by the PmgObject.Items method.
This configurator sets the initial value of the Name property.
The maximum name length is 30 characters. This is a system name, so it must contain only alphanumeric and must not contain any diacritics, empty string, spaces and the first character must not be a number. |
|---|
| Device identifier | Technical name (identifier) of the device |
|---|
| Analog value (percentage) of open/close | Percentage of analog value which defines whether the device is considered open or closed. |
|---|
| Emulation of control system command | Emulation of control system command for device status change |
|---|