Working with Signal Select Objects
Contents
1. Press any key to continue Press the F4 Cancel key to return to the container hierarchy 15 10 N30 Supervisory Controller User s Manual Deleting Input Entries from a Signal Select Object To delete Input entries from a Signal Select Object l 2 3 12 13 Browse to and highlight a Signal Select object Press Enter to open the object Press the F3 Edit key The Signal Select object attribute screen appears Figure 15 1 Move the cursor to Input List Press Enter The Signal Select object Input List appears Figure 15 2 Highlight the input to be deleted Press the F2 Del Item key Repeat Steps 6 and 7 for each input to be removed from the list Press the F4 Back key to return to the previous screen Press the F3 Save key to save the changes Check the User Assistance area of the screen to verify if the save was successful or if there were errors If errors were detected correct them and resave the entries Once the save is successful continue with Step 12 Press any key to continue Press the F4 Cancel key to return to the container hierarchy Commanding a Signal Select Object To command a Signal Select object l 2 Browse to and highlight a Signal Select object Press the F2 Command key The Signal Select Command field appears Use the spacebar and the Backspace key to cycle through the list until the desired command appears The Signal Select object supports the com2. Object Command a Signal Select Object Delete a Signal Select Object Follow These Steps Browse to and highlight the Programming container Press the F3 Add key Highlight Signal Select and press Enter Fill in the fields using Table 15 3 Move the cursor to Input List Press Enter Type in an object and attribute name Press the F3 Add Item key to add a blank entry Press F4 Back key to return to the previous screen Fill in the remaining fields using to Table 15 3 Press the F3 Save key Check the User Assistance area of the screen to verify if the save was successful or if there were errors Press any key to continue Press the F4 Cancel key to return to the container hierarchy Browse to and highlight a Signal Select object Press Enter to open the object Press the F3 Edit key Edit the fields using Table 15 3 Press the F3 Save key Check the User Assistance area of the screen to verify if the save was successful or if there were errors Press any key to continue Press the F4 Cancel key to return to the container hierarchy Browse to and highlight a Signal Select object Press Enter to open the object Press the F3 Edit key Move the cursor to Input List Press Enter Press the F3 Add Item key to add a blank entry Type in an object and attribute name Press the F4 Back key to return to the previous screen Press the F3 Save key to save the changes Check the User Assistance area of the screen to verify if th
3. as the default attribute Enter the exact object and attribute reference Present Value appears as the default attribute Use the spacebar and the Backspace key to view and select options Analog Binary Move the cursor to Input List Press Enter The Signal Select object Input List appears Figure 15 2 15 8 N30 Supervisory Controller User s Manual Dean ADMIN Mon 20 Sep 1999 14 07 CDT Input List 1 F2 Del Item F3 Add Item F4 Back Enter object and attribute name Figure 15 2 Signal Select Object Input List 7 Type in an object and attribute name 8 Press the F3 Add Item key to add a blank entry 9 Repeat Steps 7 and 8 for each input being added 10 Press the F4 Back key to return to the previous screen 11 Fill in the remaining fields using Table 15 3 12 Press the F3 Save key 13 Check the User Assistance area of the screen to verify if the save was successful or if there were errors If errors were detected correct them and resave the entries Once the save is successful continue with Step 14 14 Press any key to continue 15 Press the F4 Cancel key to return to the container hierarchy Editing a Signal Select Object To edit a Signal Select object Note To delete or add Input entries refer to the appropriate sections of this chapter 1 Browse to and highlight a Signal Select object 2 Press Enter to open the object N30 Supervisory Controller User s Manua
4. N30 Supervisory Controller Users Manual 15 1 Working with Signal Select Objects Introduction The Signal Select feature allows you to create objects that either calculate the average high and low values from a set of analog points or process values from multiple zones to adjust various setpoints This chapter describes how to e adda Signal Select object e edit a Signal Select object e add input entries to a Signal Select object e delete input entries from a Signal Select object e command a Signal Select object e delete a Signal Select object November 01 2001 Johnson Controls Inc www johnsoncontrols com Code No LIT 6892150 Software Release 5 0 15 2 N30 Supervisory Controller User s Manual Key Concepts Signal Select The Signal Select feature works with either analog or binary points and in Multi Zone applications where values from multiple zones are processed and used by the Air Handling Unit AHU to adjust various setpoints With Signal Select you can e determine the highest lowest and average values of a set of analog input points e command analog points to the average highest or lowest values calculated from a set of analog input points e calculate the state of a set of binary input points using AND and OR logical operations and use the calculated value to command a binary output point Analog Signal Select For Analog point types the Signal Select object computes one or more of aver
5. age input highest input and lowest input values for use in updating an attribute value of another object This computation occurs each time the input points change value Immediately after the computation the Signal Select object commands each of up to three referenced output objects to their respective values average output highest output and lowest output If a binary type attribute is defined as an input the input value is converted to analog before each computation Any other input type forces the Signal Select object to classify the input as unreliable Binary Signal Select For Binary point types the Signal Select object computes average state logical OR state and logical AND state values for use in updating an attribute value of another object This computation occurs each time one or more of the input points changes state Immediately after the computation it commands each of up to three referenced output objects to their respective states Average Output Logical OR Output and Logical AND Output If an analog type attribute is defined as an input the input value is converted to binary before each computation Any other input type forces the Signal Select object to classify the input as unreliable Table 15 1 describes the various types of computations Attributes N30 Supervisory Controller User s Manual 15 3 Table 15 1 Computation Types for Binary Signal Select Computation Type Description Average Outpu
6. e save was successful or if there were errors Press any key to continue Press the F4 Cancel key to return to the container hierarchy Browse to and highlight a Signal Select object Press Enter to open the object Press the F3 Edit key Move the cursor to Input List Press Enter Highlight the input to be deleted and press F2 Del Item key Press the F4 Back key to return to the previous screen Press the F3 Save key to save the changes Check the User Assistance area of the screen to verify if the save was successful or if there were errors Press any key to continue Press the F4 Cancel key to return to the container hierarchy Browse to and highlight a Signal Select object Press the F2 Command key Use the spacebar and the Backspace key to cycle through the list until the desired command appears Press Enter Browse to and highlight a Signal Select object Press Enter to open the object Press the Delete key Press the Tab key to confirm the deletion 15 6 N30 Supervisory Controller User s Manual Detailed Procedures Adding a Signal Select Object To add a Signal Select object 1 Browse to and highlight the Programming container 2 Press the F3 Add key The Add Object list appears 3 Highlight Signal Select and press Enter The Signal Select object attribute screen appears Figure 15 1 Mon 20 Sep 1999 14 06 CDT Object Object Name eO Description Object Type SIGNAL SELECT Object Category HVAC Enabl
7. ed True Engineering Values Input List 0 Items Average Output High OR Low AND Point Type Analog F3 Save F4 Cancel Enter an alphanumeric string Figure 15 1 Signal Select Object Attribute Screen 4 Fill in the fields using Table 15 3 Table 15 3 Attribute Entry Requirements Screen Area Object Engineering Attribute Object Name Description Object Type Object Category Enabled Input List Required No No Yes Yes Yes Yes N30 Supervisory Controller User s Manual Default Blank Blank Signal Select HVAC True 15 7 Options Range Maximum 32 characters Invalid characters If not completed the system assigns a name Maximum 40 characters The default is preset and cannot be changed Use the spacebar and the Backspace key to view and select options HVAC Fire Security Services Administrative Use the spacebar and the Backspace key to view and select options True False Enter the exact object and attribute reference Values Average Output High OR Low AND Point Type 5 6 No No No Yes Blank Blank Blank Analog Present Value appears as the default attribute Minimum number of Inputs in list 2 Maximum number of Inputs in list 12 Enter the exact object and attribute reference Present Value appears as the default attribute Enter the exact object and attribute reference Present Value appears
8. ists attributes of objects used in the Signal Select calculations If an analog type is added to this list but the Point Type attribute indicates binary this analog type is converted to a binary value before each computation and vice versa If one or more of the objects in the input list is disabled the output objects values are calculated using only the remaining inputs values Average Output Indicates the object attribute updated using the calculated average of all of the inputs of the Signal Select object High OR Indicates the object attribute updated using the highest input of all of the inputs in the Signal Select object for analog point types For point types specified as binary the value is updated using a logical OR condition of all inputs of the Signal Select object Low AND Indicates the object attribute updated using the lowest input of all of the inputs in the Signal Select object for point types specified as analog For point types specified as binary the value is updated using logical AND condition of all inputs of the Signal Select object Point Type Indicates the type of input values analog or binary the Signal Select monitors N30 Supervisory Controller User s Manual 15 5 Procedure Overview Table 15 2 Working with Signal Select Objects To Do This Add a Signal Select Object Edit a Signal Select Object Add Input Entries to a Signal Select Object Delete Input Entries from a Signal Select
9. l 15 9 Note Additional attributes appear Refer to the Object Dictionary 7 8 for more information Press the F3 Edit key The Signal Select object attribute screen appears Figure 15 1 Edit the fields using Table 15 3 Press the F3 Save key Check the User Assistance area of the screen to verify if the save was successful or if there were errors If errors were detected correct them and resave the entries Once the save is successful continue with Step 7 Press any key to continue Press the F4 Cancel key to return to the container hierarchy Adding Input Entries to a Signal Select Object To add Input entries to a Signal Select object 1 2 3 12 13 Browse to and highlight a desired Signal Select object Press Enter to open the object Press the F3 Edit key The Signal Select object attribute screen appears Figure 15 1 Move the cursor to Input List Press Enter The Signal Select object Input List appears Figure 15 2 Press the F3 Add Item key to add a blank entry Type in an object and attribute name Repeat Steps 6 and 7 for each input being added Press the F4 Back key to return to the previous screen Press the F3 Save key to save the changes Check the User Assistance area of the screen to verify if the save was successful or if there were errors If errors were detected correct them and resave the entries Once the save is successful continue with Step 12
10. mands described in Table 15 4 Table 15 4 Supported Commands Command Description Enable Ensures that the object reacts to any changes it may have missed while it was disabled and returns it to normal operation Disable Locks out all outputs and prevents the Signal Select functionality 4 Press Enter N30 Supervisory Controller User s Manual 15 11 Deleting a Signal Select Object To delete a Signal Select object 1 2 3 4 Browse to and highlight a Signal Select object Press Enter to open the object Press the Delete key Press the Tab key to confirm the deletion
11. t If the majority of inputs are at State 1 or the inputs are Computation evenly split between State 1 and State 0 the Average Output is commanded to State 1 If the majority of inputs are at State 0 the Average output is commanded to State 0 Logical OR If any input is at State 1 the Logical OR output is Computation commanded to State 1 If all inputs are at State 0 the Logical OR output is commanded to State 0 Logical AND If all inputs are at State 1 the AND output is Computation commanded to State 1 If any input is not at State 1 the AND output is commanded to State 0 The values of an object s attributes determine how the object operates The Signal Select object attributes described below are listed in the order that they appear on the screen Entry requirements for these attributes are in Table 15 3 For additional information about the Signal Select object and its attributes refer to the Object Dictionary Object Name Identifies the object on the user interface Description Provides optional information to further describe the object Object Type Indicates the kind of object such as Schedule N2 Analog Input or Signal Select Object Category Determines the general classification of an object to help define user access capability and message routing Enabled Indicates if the object is active and executing an operational condition 15 4 N30 Supervisory Controller User s Manual Input List L
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