forum.cncdrive.com

Hello,
we are facing some random modbus connection hickups,
our client ( a wemos D1mini) connected via usb cable, sends random values in a modbus cell (master_life_reg) every 500ms ( we also tried to send the random value at every single loop with similar results).
On the UCCNC side there is a macro that checks if the cell value has changed every 2 seconds (modbus loop is set at 100ms)
Every now and then we receive a modbus error but we cant understand why.

attached a stripped down version of the macro involved.
thanks
giorgio

Hello Giorgio,

Can you assume that if the communication works then the D1 works? Because there are some functions in the Modbus plugin that can help you. Here are 2 macros which use these functions. As I see your macros you don't need too much description, but feel free to ask if anything is not clear.