How to Work with Processes > Working with the RFID Processes Group

Process Purpose

The Start/Stop Reading process is used in the “inventory” operation (asynchronous operation) to start or stop the inventory and to define a target destination, in case there is an error during the start or stop proceedings.

This process requires the device's RFID reader to be enabled.

Therefore, use the Enable/Disable process (ex: Add the Enable/Disable process to the screen's "Ready" action).

Make sure you have already created the required RFID profile(s). See Creating an RFID Profile.

Check the necessary steps to create an RFID program in To Create an RFID Program.

When you add a process, you are required to define its settings. This occurs in the process's properties window which is displayed automatically after having added the Start/Stop Reading process.

If any subsequent edition is required, double-click the process to open its properties window and enter the necessary modifications.

Fill in the following options:

RFID Reading
Start	Check this option to start the reading (ex: Create a soft trigger, meaning, associate this process to the action of a button on screen by adding the "Start/Stop Reading process to the Button's "Actions" tab).
Stop	Check this option to end the reading.
If Error
Go to	Select a target destination, in case an error occurs, from the drop-down or list. See Detail of a window below. When defining a screen as a target destination (ex: via a “Go to” process), you CANNOT use variables to specify the name of that target screen. You must select the intended screen from the available drop-down/list.

Detail of a window:

"S:Menu" is a screen included in the same program as the process.

"R:Routine_1" is a routine included in the same program as the process.

If required, click to attach any relevant notes to this process. Click it and enter your notes in the resulting text box. These notes will be displayed in the corresponding "Actions" tab or "Process" window (in the "Notes" field) and in the "Developer Report".

Click to conclude the operation.

The added process is displayed in the corresponding "Actions" tab or "Process" window.

Taking into consideration that the gathered tag data (via RFID Tag detections) will have to be handled, remember to use the “RFID" action (associated to a screen) and, if necessary, the” Decode BCD” process to organize/decode/store the incoming information.

See Actions Associated with Screens.

See Working with Decode BCD Process.

If you want to use a label as a target destination, you can use the "Auto-Label" mechanism. This alternative to the "Set Label" process allows you to create a label in the properties window of a process - specifically, in the fields used to define target destinations (ex: the "If Error..." type fields). See To Automatically Create a Label.

Use the right-click in MCL-Designer's input boxes to access some related options as well as the general "Cut", "Copy"; "Paste"; "Search" actions (active/inactive according to the current context).

Ex: If you right-click the "Variable" input box (included in a "Conversion's" properties window), you are provided with general editing/search actions and other more specific options such as "Variable Select" (see "Variable Select"); "Variable Insert" (see "Variable Insert"); "Insert Special Character" (see To Insert Special Characters into a Control's Text Input Field) and "Localization Select" (see Localization List).

If you right-click another input box, it may provide other possibilities.