I've made 3 new commands for communication between the board and HMI, e.g.: CLT, TIM and RAM. Specially made for the monitor application. The CLT command is made for measuring the cycle time. Keep in mind that also the processing of the communication with HMI is part of the loop. TIM is a command for gettting the actual time from the board, just for checking the time. RAM is another command for sending the free RAM of the sketch. By means of the command, it is possible to monitor free RAM and check the loss of RAM by for example the use of linked list in the sketch.
Press here for info.