This application is responsible for the integration and configuration with external devices. All WTM suite of products that use external devices need to have the WTM3IOT installed on the same machine.
For example, WTM3VS users who need to print something must first use the WTM3IOT to configure the printer and test its use.
Once you have made the setting is no longer necessary to enter the WTM3IOT application except to subsequent adjustments of equipment.