A combined recipe is a combination of a recipe, up to two set point Also known as SP. The desired value of a process variable. Setpoint (SP) is an analog point parameter, and the value is entered by the operator. The setpoint can be changed any number of times during a single process. The setpoint is represented in engineering units. See SP in the Control Builder Parameter Reference. See also: analog point, parameter, process variable. profiles, and a list of Compatible Destinations.
Each combined recipe can be associated with a number of destinations, any one of which can be selected by the operator as a target for the combined recipe. Each destination includes an HC900 Hybrid controller. or UMC800 controller Also known as remote terminal unit, RTU. A generic term for a device that is used to control and monitor one or more processes in field equipment. The most common control and monitoring device in an access control and security system is an access control panel. Other devices include security monitoring panels, elevator controllers, and fire monitoring devices. Controllers include programmable logic controllers (PLCs), loop controllers, bar code readers, and scientific analyzers. See also: C200 controller, control processor, CPM, hybrid controller, network node controller, PLC., a set point programmer for each profile in the combined recipe, and an optional variable suffix. This suffix is appended to every variable in the recipe component of a combined recipe, before it is sent to a controller. This allows the same recipe to be used for more than one set of variables in a single HC900 or UMC800 controller if the controller is used to control multiple, similar processes. It is up to the user to configure the Variable tag names with the proper suffixes in the controller configuration so that the recipe with values for the Variables with these suffixes can be loaded from the server The computer on which the Experion database software and server utilities run. See also: Experion server TPS. database. An error is posted if these Variable tag names are not found on download.
When a combined recipe is loaded to a controller, the SPP Setpoint in percent. See also: setpoint parameter. profiles are loaded into the specified programmers and the recipe is loaded to the controller's configuration.
Up to 1,000 combined recipes can be created and maintained using the Station Experion's main operator interface. Station presents information using a series of displays. See also: display. HC900/UMC800 Combined Recipe Configuration displays.
To configure a combined recipe
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In Station, select Configure>Applications>HC900/UMC800>Combined Recipes. The Combined Recipe Selection display opens.
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Select the combined recipe that you want to configure or modify, or click a blank slot to create a new combined recipe.
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Click on its name to load the combined recipe.
The Combined Recipe Configuration display allows combined recipes to be configured and stored in the server database. Changes made to configuration are applied immediately to the stored combined recipe, but do not have any immediate effect on profiles or variable values currently loaded in HC900 or UMC800 controllers.
There are three optional components to a combined recipe. The first is a recipe selected from the 1,000 recipes stored in the server database (see the topic titled "Configuring a recipe" for information on recipes). The remaining components are up to two SP The setpoint parameter of an analog point. The desired value of a process variable. Setpoint (SP) is an analog pointparameter, and the value is entered by the operator. The setpoint can be changed any number of times during a single process. The setpoint is represented in engineering units. See SP in the Control Builder Parameter Reference. See also: analog point, parameter, process variable. profiles, selected from the 1,000 profiles stored in the server database (see the topic titled "Configuring an SP profile" for information on SP profiles). A combined recipe may include any, some, or none, of these components.
Destination list
Each combined recipe may be configured with up to 20 Compatible Destinations. This allows a single combined recipe to drive a number of processes in a given plant. For example, the same combined recipe may be used to operate three furnaces – where a different SP programmer in a controller, and a different set of variables, control each furnace. The recipe Variable suffix allows the same Combined Recipe to be directed to another set of Variables with the same function for a similar process in the controller.
Name
Each destination may be given a name to more easily identify the process it drives.
Controller
Each destination has a controller to which each component of the combined recipe is downloaded.
Prog A & B
These identify the SP programmers in the destination controller to which profiles A and B will be downloaded.
Var. Suffix
Identifies a short string that will be appended to every variable name in the recipe component of a combined recipe before it is downloaded. This allows the same recipe to be loaded to a number of subsets of variables within the same controller.
For example, assume the recipe contains the variables TEMP, VOLUME, and PRESS.
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If destination FURNACE1 has a variable suffix of 1 and destination FURNACE2 has a variable suffix of 2, then when the combined recipe is downloaded to FURNACE2, the variables updated will be TEMP2, VOLUME2, and PRESS2.
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If the destination had been FURNACE1, then TEMP1, VOLUME1, and PRESS1 would have been updated.
Download
See the topic titled "Downloading a combined recipe" for information on downloading a combined recipe.