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TP 2240

TMC-2240​

  • Input Voltage: 12V-36V
  • Maximum Current: 3.0A
  • Suitable for: Marlin/Klipper/RRF firmware
  • Drive Mode Support: TMC: SPI
  • Step/Direction interface with microPlyer support
  • Maximum resolution: 256 microsteps
  • Supports stealthChop2 silent operation and smooth motion
  • Supports resonance suppression at medium frequencies
  • Supports spreadCycle high dynamic motor control chopper
  • Supports dcStep load-related speed control
  • Supports stallGuard2 high precision sensorless motor load detection
  • Supports coolStep current control, up to 75% energy saving

TP2240 Reference Configuration​

dangerous
  • The driver sampling resistor is rref: 12300, please do not set it incorrectly
  • Only one of spi_bus and spi_software can be selected

SPI Mode Reference Configuration​

[tmc2240 stepper_x]
cs_pin: 
spi_bus: 
# spi_software_mosi_pin:
# spi_software_miso_pin:
# spi_software_sclk_pin: 
run_current: 0.65                   # Motor running current value
interpolate: False                  # Whether to enable 256 microstep interpolation (not recommended to enable)
rref: 12300
stealthchop_threshold: 0           # Silence threshold (if silence is not needed, change the value to 0)

Infinite Endstop Usage Instructions​

Infinite Position Usage Tips
  • Infinite position usage requires occupying a limit port; normally, the first drive position uses IO1, the second drive position uses IO2, and so on.
  • When using infinite positions, please ensure not to connect anything to the corresponding limit port.
  • For some FLY mainboards that are directly connected to the drive port, please check if DIAG is directly connected to the corresponding pin.
Infinite Endstop Usage Tips
  • To use the infinite endstop of TP2240, the motherboard's DIAG jumper must be connected
  • The original endstop_pin: needs to be disabled or deleted, and add endstop_pin: tmc5160_stepper_x:virtual_endstop
  • After configuring diag1_pin:, the limit status should be untriggered
  • For driver_SGT:, a suitable value needs to be tested manually
  • Reference configuration
[stepper_x]
# endstop_pin:PF3
endstop_pin: tmc2240_stepper_x:virtual_endstop
homing_retract_dist: 0        # Retract distance cannot be changed to 0, otherwise homing may fail

[tmc2240 stepper_x]
diag1_pin: ^!
driver_SGT: 1

#   After configuration, ensure that the limit status is untriggered
#   This pin usually uses "^" prefix to enable internal pull-up
#   Sensitivity is related to belt tension and needs to be adjusted manually
#  (Make sure to set driver_SGTHRS to a suitable sensitivity at the same time)