Operator Manual SCADA Procedures OPERATOR MANUAL SCADA 73152-482-00001 A Page 1 of 39
Original Instructions Disclaimer It is essential that you understand the information in this document. This document is not a substitute for common sense, nor a substitute for employee training. Vanderlande appeals upon all of its customers, professional users and service providers to demonstrate responsible behaviour and responsibility to the highest standards. Warning DO NOT CARRY OUT ANY WORK UNTIL YOU HAVE READ AND UNDERSTOOD THE CONTENT OF THIS DOCUMENT IN GENERAL AND THE SAFETY NOTICES IN PARTICULAR! FAILURE MAY RESULT IN SERIOUS INJURY OR DEATH! 73152-482-00001 A Page 2 of 39
Table of contents Operator Manual... 1 SCADA Procedures... 1 Original Instructions... 2 1 Introduction... 7 1.1 Target audience... 7 1.2 Symbol definitions... 7 1.3 Release history... 7 1.4 References... 7 1.5 Layout drawings... 7 1.6 Glossary of terminology... 8 2 Objective of this document... 9 3 General system description... 10 3.1 SCADA functionality... 10 3.2 SCADA... 10 3.3 Hardware... 10 3.4 Software... 10 4 Graphical user interface framework... 12 4.1 Screen layout... 12 4.2 Navigation principles... 13 4.3 Basic understanding of status representation + help screen... 14 4.3.1 General status representation... 14 4.3.2 Detailed status representation... 15 4.3.3 Objects and Labels... 16 4.3.3.1 Object/Zone/Cabinet General Status Representation... 16 4.3.3.2 Zone level Representation... 18 4.3.4 Help Screen... 19 5 Event screen + event panel... 20 5.1 Events screen... 20 5.1.1 Active Alarms... 20 5.1.2 Historic Alarms... 20 5.1.3 User Events... 22 5.2 Events panel... 23 5.3 Functionalities of event screen... 24 5.3.1 Filter alarms... 24 5.3.2 Export Historic Alarms... 25 5.3.3 Process and display active alarms... 26 5.3.4 Hidden alarms... 27 5.3.5 Event Time Stamps... 27 5.3.6 Event Types... 27 5.3.7 Event Groups... 28 5.3.8 Event Link... 28 5.3.9 Events Priority... 29 5.3.10 Events Colours... 29 5.3.11 Acknowledge events... 30 6 System screen... 32 6.1 System total overview screen... 33 73152-482-00001 A Page 3 of 39
6.2 Detailed status screen... 34 6.3 Control, settings and monitoring boxes... 35 6.3.1 Control box: Start, stop and reset For individial area... 35 6.3.2 Control box: Check In Buttons... 35 7 Communication screen... 36 8 User authorization level... 37 8.1 Log in... 37 8.2 User levels... 38 Appendix A... 39 73152-482-00001 A Page 4 of 39
Table of figures Figure 4-1 Example of SCADA screen layout... 12 Figure 4-2 Example of screen navigation... 13 Figure 4-3 Example of detailed state box... 15 Figure 4-4 Example for Object/Label option... 16 Figure 4-5 Example of object status... 16 Figure 4-6 Example of zone status... 17 Figure 4-7 Example of cabinet status... 17 Figure 4-8 Example of zone representation... 18 Figure 4-10 Help screen... 19 Figure 5-1 Example of active alarm screen... 20 Figure 5-2 Example of historic alarm screen... 21 Figure 5-3 Example of user events... 22 Figure 5-4 Example of events panel... 23 Figure 5-5 Example of filter alarms... 24 Figure 5-6 Export of alarms... 25 Figure 5-7 Save exported alarms... 25 Figure 5-8 Example of process and display... 26 Figure 5-9 Hidden alarm indication... 27 Figure 5-10 Hidden alarms display and restore... 27 Figure 5-11 "Link" to navigate to problem area... 28 Figure 5-12 Example of event screen with colors... 29 Figure 5-13 Example of acknowledging alarm... 30 Figure 6-2 Example of total overview screen... 33 Figure 6-3 Example of detailed screen... 34 Figure 6-5 Control box - Start/Stop/Reset for area screen... 35 Figure 6-4 Control box Check In buttons... 35 Figure 7-1 Communication status screen... 36 Figure 8-1 Change user... 37 Figure 8-2 User log-in... 37 Figure 8-3 Footer section with username... 37 Figure 8-4 User credentials... 38 Figure 8-5 User management... 39 Figure 8-6 Add new user... 39 73152-482-00001 A Page 5 of 39
List of tables Table 4-1 General status colours... 15 Table 5-1 Event colours... 29 Table 6-1 System screens... 32 Table 6-2 General status of area box and system tabs... 33 Table 8-1 User levels and access... 38 73152-482-00001 A Page 6 of 39
1 Introduction This document describes the procedures for the SCADA Operator at the SCADA position. 1.1 Target audience The target audience of this document is the SCADA Operator. 1.2 Symbol definitions Attention Risk of damage to equipment or property. Note Additional relevant information. 1.3 Release history Version Version Author Description A 07-06-2016 Invkam Review 1.4 References Reference Type Document ID Description [Compliancy Matrix] Document 73152-420-91000-EN A SCADA Compliancy Matrix [Design Doc] Document 73152-455-00001-EN-A Design Document 1.5 Layout drawings Reference Document ID Description Mechanical Layout 73152-330-EN D01 Total Layout Standard Overall BHS system layout 73152-482-00001 A Page 7 of 39
1.6 Glossary of terminology CCC CCTV GUI HMI LCC MFD PEC PLC PPI SCADA VI Central control cabinet (PLC Cabinet) Close Circuit Television (Cameras) Graphical user interface Human machine interface Local control cabinet (Field Cabinets) Material Flow Diagram Photo Electric Cell. Programmable Logic Controller. In this system a PLC is used to control the conveyor system. Pulse Position Indicator; a device that is used to measure belt movement. Supervisory Control And Data Acquisition Visualization system.. Vanderlande Industries 73152-482-00001 A Page 8 of 39
2 Objective of this document The objective of the user manual is to give the users of the baggage handling system the required information about the functionality and the use of the SCADA system, so that they are capable to use it in a correct and safe way. 73152-482-00001 A Page 9 of 39
3 General system description 3.1 SCADA functionality SCADA is the abbreviation for Supervisory Control and Data Acquisition. It is generally used for providing a user interface with automated systems by means of a PC. The main functions of SCADA systems are: Displaying a graphical visualization of the technical processes and the ability to interact with these processes by issuing control commands. Event handling: Status values in the monitored systems are constantly checked and when these values meet certain criteria, events are raised. These events are presented to the users of the SCADA system in a clear and concise manner so that the problem and required action is clear. 3.2 SCADA SCADA forms an essential part in the operation of the total BHS system. It is the main system for monitoring the operation of the physical equipment (conveyors, sorters, etc.) and overseeing the baggage flow and operations via visual work station with GUI. 3.3 Hardware There are two rack mounted SCADA server one is operational and another one is hot standby. The hardware specification for server machine includes: CPU 12 Core 2.40 GHZ Intel Xeon(R) E5-2620 V3 Memory- 24448 MB SCADA is developed using a screen resolution of 1920x1200 pixels and in 32 bits true colour. 3.4 Software The software elements of the SCADA system consist of a standard SCADA package with a project specific application package; Microsoft Windows Server 2012 R2 Standard Edition (Operating System for the SCADA server) Internet Explorer version 11.0. WEBfactory 2010 3.6 SP 8 (this is the standard SCADA Software package on SCADA Server) INAT OPC Server Version 4.11.00 - used for setting up network connections to the SCADA partners (PLC). 73152-482-00001 A Page 10 of 39
Note The project specific application package is developed by Vanderlande Industries. Attention Do not perform a Windows update or install another version of Internet Explorer. It is not allowed to install software on the SCADA clients or the SCADA server without consulting the VI SCADA engineer or when the software is not for direct use of the SCADA application. 73152-482-00001 A Page 11 of 39
4 Graphical user interface framework 4.1 Screen layout The screen comprises a set of graphical bars and panels arranged in a pre-configured layout. The layout is fixed and cannot be changed. The layout has the following graphical bars and panels: Header bar: Shows customer name and logo and Vanderlande Logo. Tab-row: Layered tab-row structure helps for quick and easy navigation. It also displays the current date and time. General SCADA view: this is the main panel of the screen layout. The details according to the selected tab are shown in this view. Layer/Enable Option: This option will show or hide Objects. When the objects are hidden they will appear only in case of a problem. This results in a less crowded screen. Login: Log in to the SCADA server using the user account. To log in with the user account no password is necessary. Event Panel: shows filtered and prioritized top 5 events according to their occurrence. The layout of the screen is shown in below figure Header with Customer name Tab-row structure for quick and easy navigation General SCADA View Layer/Enable Option Login Last 5 events with description and hyperlink to detailed screen Footer displays uder level,time and date and Template version Type the following URL in Internet Explorer http://localhost/vi_wf2010_template17/ Figure 4-1 Example of SCADA screen layout 73152-482-00001 A Page 12 of 39
to view the SCADA application on any client machine connected to the SCADA server on the network. 4.2 Navigation principles You can open the screens in one of the following ways: Press shortcut keys Click the area tab Click the area box Click the alarm link in the small event panel Click the navigation arrows to navigate between two detailed screens. Area tab navigation to detailed screen through short cut keys Area box to detailed navigation screen Total overview screen Detailed screen. Figure 4-2 Example of screen navigation 73152-482-00001 A Page 13 of 39
4.3 Basic understanding of status representation + help screen Two types of status can be distinguished: General status: Information concerning the state of equipment Detailed status: Information concerning the reason for the state of equipment. You can also show or hide objects and labels. Objects and Labels: Visibility of Objects/Labels can be enable and disabled on screens. 4.3.1 General status representation The status of an area total overview, detailed screen or section will be shown as a general status, which can be extended with detailed status. There are several general states defined. Only one of these states, the one with the highest priority, can be active at any one time. The status of an area and a detailed screen represent the states of the sections concerned. Not every section can make all of the General States available. Sections not directly controlled by the conveyor control system will only display (on the SCADA) the general states of: started stopped error and warning To determine the exact status (for example in the event of an error) of any of the above sections, the operator must consult the relevant equipment control panel and examine the data displayed on the local operator panel. Every General Status is represented by a non-unique colour in a tag. All possible General States are given in descending priority: no. Type Colour indication 1 Safety stop 2 Offline 3 Error 4 Warning 5 Stopped 6 Energy saving 7 Die back 8 Full 9 Started 73152-482-00001 A Page 14 of 39
Table 4-1 General status colours A safety stop is indicated by a blinking safety stop sign. When there is no safety stop active this sign is not visible and can also not be made visible. 4.3.2 Detailed status representation Various detailed states are defined. The detailed status gives additional information about the General Status. More than one detailed status can be active at any one time. Detailed States are shown in the small and the big event panels. They are displayed as text in the panel where they can be acknowledged. The following examples are given to indicate the meaning of some detailed states (these detailed states could belong to the General Status Error ): LMS not healthy Photocell blocked Error pulse position indicator Clicking on any zone/section/object symbol, will do a query on the alarm with the tool tip mark code. It will show the general status of the equipment and the available alarms. Active alarms will be highlighted with the circle in the front. 1 2 3 Figure 4-3 Example of detailed state box 1. Status of conveyor in system. 2. Active detailed status in system 3. Possible alarms in detailed status box of conveyor 73152-482-00001 A Page 15 of 39
4.3.3 Objects and Labels Visibility of Objects/Labels can be enabled and disabled on screens. This option will show or hide Objects/ Labels. When the objects/ labels are hidden they will appear only in case of a problem. This results in a less crowded screen. Figure 4-4 Example for Object/Label option 4.3.3.1 Object/Zone/Cabinet General Status Representation When and object is in stopped, offline, error, warning or stopped status it will highlighted with Grey, Red, Aqua, Orange border respectively indicating the status of object. Object status: Figure 4-5 Example of object status 73152-482-00001 A Page 16 of 39
Zone status: Figure 4-6 Example of zone status Cabinet Status Figure 4-7 Example of cabinet status 73152-482-00001 A Page 17 of 39
4.3.3.2 Zone level Representation When any particular zone symbol is selected, related components are also selected on screen. Figure 4-8 Example of zone representation 73152-482-00001 A Page 18 of 39
4.3.4 Help Screen The help screen shows the description of all the colours and the symbols used in BHS SCADA. Figure 4-9 Help screen 73152-482-00001 A Page 19 of 39
5 Event screen + event panel Events are represented in two different screens: Event screen Event panel, small 5.1 Events screen Main Event screen is further divided into sub tabs: Active Alarms Historic Alarms User Events 5.1.1 Active Alarms The active alarms screen displays a list of active events from the monitored system; the range of events shown is preconfigured in the project specific application software. Each event is displayed with the Active, Acknowledged and Gone timestamps. Each event is also of one of the pre-defined alarm types. The events are sorted as per the priority and then the occurrence. The events can be acknowledged (single or multiple) and comments can be added from this screen. Figure 5-1 Example of active alarm screen 5.1.2 Historic Alarms The historic alarms screen gives access to a total overview of all the events that occurred in the last 31 days. The system offers several filters to select certain events from the list. 73152-482-00001 A Page 20 of 39
Figure 5-2 Example of historic alarm screen 73152-482-00001 A Page 21 of 39
5.1.3 User Events The user events screen shows the events triggered by the users. For example, log in and log out. 1 2 3 4 Figure 5-3 Example of user events This tab displays information about Login/logout event by Users 1. Logged in /logged out activity of user. 2. Time instance when event has occurred. 3. Description about event occurred. 4. Username which was used for login. 73152-482-00001 A Page 22 of 39
5.2 Events panel On every screen small even panel is displayed at the bottom. This panel shows top 5 alarms filtered on the respective alarm group related to the displayed page and sorted by priority and active timestamp. Filter by Alarm Group Event Panel Sorted by priority and Active timestamp Figure 5-4 Example of events panel 73152-482-00001 A Page 23 of 39
5.3 Functionalities of event screen 5.3.1 Filter alarms The system offers several filters to select certain events. 1 2 4 5 3 Figure 5-5 Example of filter alarms Select the event Group filter 1. Select Active alarms (1) tab 2. Select Groups (2) 3. In the pop-up window select the desired group(s) 4. Select OK Select the event start and end time 1. Select start and end time (3) Select the event Type filter 1. Select Active alarms (1) tab 2. Select Types (4) 3. In the pop-up window select the desired type(s) 4. Select OK Select the text filter 1. Type any part of the alarm text to be filtered. (5) 73152-482-00001 A Page 24 of 39
5.3.2 Export Historic Alarms In Historic alarms, you can export the alarms to.xml format. 1. Click on Events tab, 2. Click on Historic Alarms tab 3. Login as Administrator or Supervisor 4. Click on Export button and type the name of file. 1 2 4 3 Figure 5-6 Export of alarms Figure 5-7 Save exported alarms 73152-482-00001 A Page 25 of 39
5.3.3 Process and display active alarms In events screen, under Active tab, you can enable or disable the processing and displaying of alarms. Options available are: Figure 5-8 Example of process and display Option Process and display Process but do not display Display but do not process Do not process and do not display Description All the alarms will be processed in SCADA and will be displayed in events screen Alarm will be processed but will not be displayed; it will be hidden from events screen Alarm will be displayed in events screen, but will not be processed. Alarm will neither be processed nor be displayed on SCADA. 73152-482-00001 A Page 26 of 39
5.3.4 Hidden alarms The alarms which are selected for hiding by choosing not to display or not to process, are called hidden alarms. When there is at least one alarm selected as hidden alarm, Hidden alarm indication becomes active as shown in below figure. Figure 5-9 Hidden alarm indication Click Hidden alarms to show a list of hidden alarms. You can restore the setting. Figure 5-10 Hidden alarms display and restore 5.3.5 Event Time Stamps Each event is displayed along with the following time/date stamps: Event Active Acknowledged Gone Description Time/date of the event occurring Time/date of the event being acknowledged Time/date of the event being reset 5.3.6 Event Types The type of event can be: Communication error: Any kind of communication loss. Emergency stop: Emergency stop is active 73152-482-00001 A Page 27 of 39
Error: An event in the system that stops or affects the functionality of any BHS equipment. Eg PEC Blockage Warning: An event in the system which doesn t stop the functionality but warns the attention to avoid from becoming the potential problem, i.e Error. Eg. Successive no read Informational: Just an informational event. Eg. Shutter opened. 5.3.7 Event Groups Depending on the area an event is related to, it is categorised in particular group. All events are part of any of the following groups depending on the area they are related to. Departure 01 Departure 02 5.3.8 Event Link To go to the location of the equipment, select go to in the column Location Link. Figure 5-11 "Link" to navigate to problem area 73152-482-00001 A Page 28 of 39
5.3.9 Events Priority There is a priority in displaying the events. Events with a higher priority will always be shown above events with a lower priority. Priority in events: Communication Error priority 100 (High) Emergency stop priority 95 Error priority 90 Warning priority 85 Informational priority 80 (Low) Events with the same priority are shown in order of occurrence. 5.3.10 Events Colours An event line has a certain text colour to define the status of the event. All states are shown in table below. Event status Active errors Non active errors, not acknowledged Acknowledged active errors Active warnings Non active warnings Acknowledged active warnings Table 5-1 Event colours Text Colour Red Green Blue Orange Green Blue Figure 5-12 Example of event screen with colors 73152-482-00001 A Page 29 of 39
5.3.11 Acknowledge events In the event screen the events can be acknowledged. An acknowledged event will change its colour. An event that is acknowledged and no longer active will disappear from the screen. It is also possible to acknowledge all active visible events at the same time (only possible from the main events panel). Events that are not acknowledged will stay on the list. Inactive and unacknowledged events will also remain on the list but the time that the alarm became inactive will be shown in the Gone column. When an event is acknowledged, a comment can be added giving additional information about the event. These comments are logged with the respective events, see Historic alarms. A warning disappears when it is no longer active. An error which is no longer active must always be acknowledged before it disappears. Events that are not acknowledged will stay on the list. Acknowledge single event Figure 5-13 Example of acknowledging alarm Go to the Actions column in the event Right click and Select the option to acknowledge event in the Action column An acknowledged event will disappear from the list if the alarm is not active. Acknowledge all events on displayed event page Go to the Action column in the event screen (this cannot be done from the event panel, small) Right click and Select the option to acknowledge event in the Action column Acknowledged events will disappear from the list if the alarms are not active. 73152-482-00001 A Page 30 of 39
Acknowledge single event with comment for logging Go to the Action column in the event Select Acknowledge(+Comments) in the Action column Right click and Select the option to acknowledge event in the Action column Write required comment. Click Save. Event will be acknowledged and comment is visible in Acknowledge comment column User level is mentioned in Actions column Note An acknowledged event will disappear from the list if the alarm is not active. Warnings and Informational alarm type will be acknowledged automatically Note Error events that are not acknowledged will stay in the list. In the small event panel field, acknowledged events will go to the bottom of the alarm list. 73152-482-00001 A Page 31 of 39
6 System screen Screen no Tab name Contains Alarm group Controller Screen 1 Total Overview 3D layout of the system Top 5 alarms None Screen 2 Departure 01 Check in, Screening Departure 01 PLC01 Screen 3 Arrival 01 Makeup Carousel,Shutter Arrival 01 PLC02 Objetct Screen 4 Arrival 02 Makeup Carousel,Shutter Objetct Table 6-1 System screens Arrival 02 PLC02 73152-482-00001 A Page 32 of 39
6.1 System total overview screen The System total overview screen shows a graphical presentation of the total material handling system in 3D. Each area is tagged and represents a general status (grouped status of all section statuses of that area). An example of a total overview screen is shown in following figure. Figure 6-1 Example of total overview screen These area boxes will change colour if the status of that area changes. The navigation bar area tabs will change colour to red dot whenever there is an error in area and blue dot when area is in offline state in the affected area. Area box and System tabs will show Started,Error,Offline,Stopped Status no. Type Colour indication 1 Safety stop 2 Offline 3 Error 4 Stopped 5 Started Table 6-2 General status of area box and system tabs 73152-482-00001 A Page 33 of 39
6.2 Detailed status screen A detailed status screen shows an area layout with colored tags that represent the general status of each individual section in that area. An example of detailed screen is shown in following figure. Area Start/Stop/ Reset control Detailed status screen General status of section depicted by colour Text information of conveyor/section Template Version Figure 6-2 Example of detailed screen The control cabinets (CCC, LCC etc.) are positioned according to the physical position. When pointing to the cabinet with the mouse-pointer a tooltip will pop-up, showing the name of the control cabinet. When an error is reported (Table 6-2 General status of area box and system tabs) Emergency stops are also positioned according to the physical position and have a tooltip for the extra information. These emergency stops are only shown in the detailed screen when actively pressed to stop the material handling system. If an emergency stop is pressed, this can be identified in SCADA by a blinking emergency stop symbol is shown in the detailed area screen where the emergency stop is located. Each section (equipment) is represented by a symbol with tooltip. The symbol represents the general status of the section (equipment) by changing the color as described in Table 6-2 General status of area box and system tabs Status Color. When there is an error for any section or emergency stop is active or any cabinet has any error then: The general status of the section is error the rectangle becomes red. If cabinet is in error then the symbol becomes red. If emergency stop is active then its symbols starts blinking. The detailed area tab in the lower tab-bar is displayed with red dot eg Departure 01 The Total Overview tab and the sub-system tab (eg Total overview ) in system,-bar are displayed with red dot. The detailed area status box changes to red on the Total Overview screen. The System tab is displayed with red dot in the upper tab-bar to indicate error in system tab, since operator might be have any other application tab selected/active,. The textual event is reported in the small and the main event panels. With navigation arrows the operator can switch to the upstream or downstream areas, if applicable. The arrow indicates the product flow. 73152-482-00001 A Page 34 of 39
6.3 Control, settings and monitoring boxes 6.3.1 Control box: Start, stop and reset For individial area Starting, stopping, and Resetting the area can be done by the control boxes on the area screen. Status of system started or stopped will be reported to SCADA Figure 6-3 Control box - Start/Stop/Reset for area screen Each detailed screen can have one or many such controls boxes controlling the specific areas. Commands can be issued only by the user with specific rights to do so. 6.3.2 Control box: Check In Buttons This is used to overruled weighing scale unit Figure 6-4 Control box Check In buttons 73152-482-00001 A Page 35 of 39
7 Communication screen The TCP/IP connections between SCADA and the low level system controllers (PLC s) are monitored. The following communication status of the low level controls is shown: Communication between PLC and SCADA There are two statuses possible for each connection - online (green) or offline (red). In addition to this, the status of the SCADA server application is also shown as - running (green) or stopped (red). The communication in the Application tab-bar contains red dot if any one of the connection is offline or SCADA server is stopped. Figure 7-1 Communication status screen Attention When the communication with a PLC is offline all tags status gets freezed. Communication tab gets red underlined. After clicking on communication tab, respective connection status is shown as offline with red background. This should be reported to maintenance team for immediate attention. 73152-482-00001 A Page 36 of 39
8 User authorization level 8.1 Log in To login, user has to click on the log-in icon. Figure 8-1 Change user The WEBfactory2010 Log in screen will appear as below: Figure 8-2 User log-in If the Log in is successful the footer section will show the user name and the user level. Figure 8-3 Footer section with username When an operator is logged in, his name will appear in the footer of the SCADA layout, also his function will be visible here on this particular SCADA station. When nobody is logged in the active user level will always be Viewer. All SCADA stations show the name and user level of the operator that is logged into that particular SCADA station. 73152-482-00001 A Page 37 of 39
8.2 User levels There are three user levels: Username Administrator Supervisor Viewer Password vi!admin supervisor viewe Figure 8-4 User credentials The administrator (Level 1): Has full access to all functions with the additional option to add users. The supervisor(level 2): Has access for controlling the system and can acknowledge the alarms. The viewer (Level 3): Can only see system status. View System View Detailed Screens View Events Acknowledging events Acknowledge with comment Start / stop / reset system or areas Select modes/ BHS Settings View / filter / print / exporting History Administrator + + + + + + Manage Users Supervisor + + + + + Viewer + Table 8-1 User levels and access 73152-482-00001 A Page 38 of 39
APPENDIX A User Administration If the user s level is Administrator, the user management tab will be shown. Clicking this tab will allow the Administrative user to create other users. Here we can find a total overview of the available users Figure 8-5 User management To add a new user select New WEBfactory User to add a new Web factory user Figure 8-6 Add new user Give an appropriate name Check the box: Active Fill in the user level Check the box: Multiple logons Fill in an auto log off interval when required Fill in a maximum number off failed logons to disable the user. When this is reached the administrator can reset the failed logons Log activities when required Check privileged writing when required Check the box Password expires if required Finally set the authorization group Select Save to add the new user Attention When adding or changing users: Level 1 is used for Administrators Level 2 is used for Supervisors Level 3 is used for Viewers 73152-482-00001 A Page 39 of 39