i was searching for possibility to deactivate servo, to prevent damage (overheat) it in my case, and finally I have found a solution. You have to set "!" in front of pin name and then again any M280. "!" changes polarity of output and next M280 command results in sending unreliable data to servo so it deactivates.
Like in example bellow.
Of course then before any M280 command you should put M950.
M950 S1 C"pinname"
M280 P1 S180
M950 S1 C"!pinname"
M280 P1 S180
i was searching for possibility to deactivate servo, to prevent damage (overheat) it in my case, and finally I have found a solution. You have to set "!" in front of pin name and then again any M280. "!" changes polarity of output and next M280 command results in sending unreliable data to servo so it deactivates.
Like in example bellow.
Of course then before any M280 command you should put M950.
M950 S1 C"pinname"
M280 P1 S180
M950 S1 C"!pinname"
M280 P1 S180
@dariusz So I have tried with several TFT25 firmware including first one which has config_rrf.ini from march 2021. No change, still no continuous communication with duet2 wifi board.
@jay_s_uk I was trying also other numbers. It works with 2 also, the same way.
@jay_s_uk Unfortunately, didn't help 
I would like to use TFT24 V1.1 display with DUET 2 WiFi board. I have PanelDue displays 5 and 7 in other projects. For this one I needed small display and Duet 3D documentation claims, it should work fine. But there is problem with communication, wich is not continuous but only on power up, error messages, and display mode change. I have opened bug issue on BIGTREETECH-TouchScreenFirmware GitHub, https://github.com/bigtreetech/BIGTREETECH-TouchScreenFirmware/issues/2475. However they claim its Duet 3D board related. May someone help me to solve this problem. There is also Video with description to better understand the issue.
