High Speed Counters (HSC) Hardware Software Versions

High Speed Counters (HSC) High Speed Counters (HSC) Hardware Software Versions Used to Develop This Guide Windows XP, Service Pack 3 Connected Components Workbench (CCW) Release 1 0 0 62 software Mi.

High Speed Counters (HSC) Hardware & Software Versions Used to Develop This Guide • Windows XP, Service Pack • Connected Components Workbench (CCW) Release 1.0.0.62 software • Micro830 controller (2080-24QBB) • 845T-DZ33ACR encoder References: • Micro830 User Manual (2080-UM002A-EN-E) • RATube: How to use HSC instruction (http://ratube.ra.rockwell.com/watch_video.php? v=2921AA35SSBR) Building a High Speed Counter HSC Project This guide will show you how to create a HSC function block and set the correct parameters 1) Start CCW and open a new project From the Catalog windows, choose the correct controller by double clicking on it or dragging and dropping it onto the Project Organizer windows 2) Right click on programs (under Project manager) and click on new ladder diagram to create a new ladder logic windows 3) On the rung, add a direct contact and assign it to input (further on this guide you will learn which input to choose for your specific controller or application) To the right of the contact, add a function block and choose HSC from the options given in the Instruction Block Selector You could a search by typing HSC on the NAME box Your windows should now look as follows: 4) In the Project Organizer window, double click Local Variables to bring up the variables window Add the following variables with its corresponding data type: NAME MyCommand MyAppData MyInfo MyPLS MyStatus DATA TYPE USINT HSCAPP HSCSTS PLS UINT The variable windows should look as follows: 5) Now, we want to add values into the variables we just created While still on the variables window, click on the box under the Initial Value tab which is assigned to the MyCommand variable (you could drag and drop the Initial Value tab to the right of the Data Type tab for ease of use) and set the value to for a list of commands refer to the table below: 6) Next we will assign values to the MyAppData variable Click on the + sign next to the MyAppData variable to expand it and reveal the sub-variables Set the initial values same to those shown in the diagram below as well as the dimension value of the MyPLS variable: MyAppData variable has many sub-variables which determines the settings of the counter, it is crucial to know each one in order to determine how the counter will perform MyAppData.PlsEnable allows the user to either enable or disable the PLS settings It should be set to FALSE (disabled) if the MyAppData variable is to be used MyAppData.HsID allows the user to specify which embedded inputs will be used depending on the MODE and the type of application The table below shows the different IDs that can be used as well as the embedded inputs and its characteristics: If ID is used, ID cannot be used on the same controller since the inputs are being used by the Reset and Hold For a list of the amount of HSC that can be used per controller, refer to the Micro830 user guide (2080-UM002A-EN-E) page 91 MyAppData.HscMode allows the user to specify the type of operation in which the HSC will count Please see the table below for a list of MODES available: Modes 1, 3, 5, 7, and will only work when an ID of 0, 2, or is set due to the fact that these modes use reset and hold Modes 0, 2, 4, 6, and will work on any ID Modes 6-9 will only work when an encoder is connected to the controller Use the HSC ID chart as a reference to wire the encoder to the controller MyAppData.HPSetting, MyAppData.LPSettign, MyAppData.OFSetting, and MyAppData.UFSettign are all user defined variables which represent the counting range of the HSC The diagram below gives an example of a range of values that can be set for these variables: MyAppData.OutputMask along with MyAppData.HPOutput and MyAppData.LPOutput allows the user to specify which embedded outputs can be turned on when a High Preset or Low Preset is reached These variables use a combination of decimals and binary numbers to specify the embedded outputs that are able to turn on/off Thus in our example, we first set the Output Mask to a decimal value of which when converted to binary is equal to 0011 This means that now outputs O0 and O1 are allowed to turn on/off Now, we set the HPOutput to a decimal value of 1, which when converted to binary is equal to 0001 This means that when a High Preset is reached, output O0 will turn on and stay on until the HSC is reset or the counter counts back down to a Low Preset The LPOutput works same way as the HPOutput except an output will be turned on when a Low Preset is reached 7) Go back to the ladder diagram and assign the variables to the corresponding blocks of the HSC function block The HSC function block should look as follows: 8) Next, click on the Micro830 controller under the Project Organizer windows to bring up the Micro830 windows In it, click on the Embedded I/O option and set the input filters to a correct value depending on the characteristics of the encoder 9) Make sure that your encoder is connected to the Micro830 then power on the Micro830 and connect it to your PC Build the program in CCW and Download it to the controller Running the High Speed Counter HSC 10) To test the program, go into debug mode by either clicking on Debug option on the upper left corner of the screen then choosing start debug, or by clicking on the green play button on the top middle of the screen, or simply hitting the F5 windows key Now that we are on debug mode we can see the values of the HSC output The HSC function block has two outputs, one is the STS (MyStatus) and the other is the HSCSTS (MyInfo) 11) Double click on the direct contact labeled _IO_EM_DI_05 to bring up the Variable Monitoring window Click on the I/O-Micro830 tab, and then click on the _IO_EM_DI_05 boxes to check the Lock then Logical Value options so that this input will stay in the ON position 12) Click on the Local Variables tab to see any real time changes being made to the variables Click on the + sign next to MyAppData and MyInfo to expand these variables You can now turn the encoder to see the counter count up/down; the value will be displayed on MyInfo.Accumulator MyStatus variable should display a Logical Value of meaning that the HSC is running For this example; once the Accumulator reaches a High Preset value of 40, output will be turned on and the HPReached flag will be turned on Once the Accumulator reaches a Low Preset value of -40, output will be turned on and the LPReached flag will be turned on as well Using the Programmable Limit Switch (PLS) Function The Programmable Limit Switch function allows you to configure the High-Speed Counter to operate as a PLS (programmable limit switch) or rotary cam switch 1) Start a new project and follow the same guidelines as the previous project The only difference is that the values in the variables will be different The main difference is that within HSCAPP the PlsEnable variable should now be set to TRUE and you need to set a value only for UFSetting and OFSetting (OutputMask is optional depending if an output is to be set or not) So your new variable values should look something like this: On this example the PLS variable was give a dimension of [1 4] This means that the HSC could have different High Presets and different Low Preset Once again, your High Presets should be set lower than the OFSetting and the Low Preset should be greater than the UFSetting The HscHPOutPut and HscLPOutPut values will determine which outputs will be turned on when a High Preset or Low Preset is reached 2) You can now build and download the program into the controller then debug and test it The counter will keep counting until an Over Flow or Under Flow is reached then starts again from either the lowest or highest value depending on which direction the counter is counting  ...Building a High Speed Counter HSC Project This guide will show you how to create a HSC function block and set... connect it to your PC Build the program in CCW and Download it to the controller Running the High Speed Counter HSC 10) To test the program, go into debug mode by either clicking on Debug option... Limit Switch (PLS) Function The Programmable Limit Switch function allows you to configure the High- Speed Counter to operate as a PLS (programmable limit switch) or rotary cam switch 1) Start a