[BUG] Z2 current independent from Z1 with TMC2208

[sn4k3]

Description

After install second Z on E1 with TMC2208 UART, it works, but current is independent from Z1. My test is:

1. M906 Z10 ; Set to 10mAh
2. Move Z by 50mm
3. Touch or light grab Z1 skips step / stop motor but heavy grab Z2 shaft keeps rotating and skip my fingers, also can't rotate it when is holding while Z1 i can easy rotate just by touch with such current. I tried to send M906 I1 Z10 but nothing change. And i tried multiple configurations

My connections are like image below, except UART for E on that picture goes to Z2 driver:

Board: MKS GEN L Drivers:

#define X_DRIVER_TYPE  TMC2208
#define Y_DRIVER_TYPE  TMC2208
#define Z_DRIVER_TYPE  TMC2208
//#define X2_DRIVER_TYPE TMC2208
//#define Y2_DRIVER_TYPE TMC2208
#define Z2_DRIVER_TYPE TMC2208
#define E0_DRIVER_TYPE LV8729
//#define E1_DRIVER_TYPE TMC2208
//#define E2_DRIVER_TYPE LV8729
//#define E3_DRIVER_TYPE LV8729
//#define E4_DRIVER_TYPE LV8729

Pins:

#define Z_SERIAL_TX_PIN    42
#define Z_SERIAL_RX_PIN    65
#define Z2_SERIAL_TX_PIN   44
#define Z2_SERIAL_RX_PIN   66

#define E0_SERIAL_TX_PIN   44
#define E0_SERIAL_RX_PIN   66
#define E1_SERIAL_TX_PIN   44
#define E1_SERIAL_RX_PIN   66

What i'm doing wrong?

[teemuatlut]

Have you verified you have successful communication with the drivers?

Paste the M906 output after sending a command.

[sn4k3]

Send: M906 Recv: X driver current: 600 Recv: Y driver current: 600 Recv: Z driver current: 800 Recv: ok

Send: M906 Z10 Recv: ok Send: M906 Recv: X driver current: 600 Recv: Y driver current: 600 Recv: Z driver current: 10 Recv: ok

Send: M122 Recv: X Y Z Recv: Enabled false false false Recv: Set current 600 600 10 Recv: RMS current 1049 1049 55 Recv: MAX current 1479 1479 78 Recv: Run current 18/31 18/31 0/31 Recv: Hold current 9/31 9/31 0/31 Recv: CS actual 0/31 0/31 0/31 Recv: PWM scale 0 0 0 Recv: vsense 0=.325 0=.325 0=.325 Recv: stealthChop false false false Recv: msteps 256 256 256 Recv: tstep 0 0 0 Recv: pwm Recv: threshold 0 0 0 Recv: [mm/s] - - - Recv: OT prewarn false false false Recv: OT prewarn has Recv: been triggered false false false Recv: off time 0 0 0 Recv: blank time 16 16 16 Recv: hysteresis Recv: -end -3 -3 -3 Recv: -start 1 1 1 Recv: Stallguard thrs Recv: DRVSTATUS X Y Z Recv: stst Recv: olb Recv: ola Recv: s2gb Recv: s2ga Recv: otpw Recv: ot Recv: 157C Recv: 150C Recv: 143C Recv: 120C Recv: s2vsa Recv: s2vsb Recv: Driver registers: X = 0x00:00:00:00 Recv: Y = 0x00:00:00:00 Recv: Z = 0x00:00:00:00

Should Z2 show on that debug?

Configuration_adv.zip

[teemuatlut]

You have a connection issue that likely prevents your settings from applying. See the TMC troubleshooting section http://marlinfw.org/docs/hardware/tmc_drivers.html#troubleshooting

[sn4k3]

You have a connection issue that likely prevents your settings from applying. See the TMC troubleshooting section http://marlinfw.org/docs/hardware/tmc_drivers.html#troubleshooting

Settings apply to all axis, except Z2. I will take a look at the link

[teemuatlut]

Have you enabled Z_DUAL_STEPPER_DRIVERS?

[sn4k3]

Have you enabled Z_DUAL_STEPPER_DRIVERS?

Yes, i have attached my config files if anyone want take a look. As i said second Z motor works, but current not set equal like primary z

[teemuatlut]

Yes, i have attached my config files if anyone want take a look.

I'm checking now.

As i said second Z motor works, but current not set equal like primary z

TMC2208 has build in defaults that allow it to "work" even if you can't connect to it.

[teemuatlut]

I assume you're using 1.1.9? Try either one of the bugfix branches.

[sn4k3]

I tried now to exchange cable, I move the jumpers 42/65 from Z1 to 44/66 pins, send M906 Z10, it still apply in debug but motor current not set, so not a cable problem nor driver, it look likes it's ignoring something... As i understand when you use Dual Motor and send X, Y or Z current marlin apply to both Z1 and Z2 motor without the need set current for 1 and 2 individual right?

I assume you're using 1.1.9? Try either one of the bugfix branches.

Yes' im using lastest release. I will look at branches and search for bugfixes or related notes

[wesk-ms]

@teemuatlut if it helps, I can repro this issue with TMC5160s connected over SPI. I'm using bugfix-2.0.x that I downloaded and built yesterday. M122 output shows a connection to all Trinamic drivers with no unexpected register values.

M906 Z2500 Z22500 results in only Z being set to 2.5A.

M906 Z2500 results in only Z being set to 2.5A.

The printer prints fine and both Z motors work correctly, just can't set the current on Z2 from the console.

[teemuatlut]

See the syntax for controlling secondary drivers on an axis. http://marlinfw.org/docs/gcode/M906.html

[sn4k3]

@teemuatlut if it helps, I can repro this issue with TMC5160s connected over SPI. I'm using bugfix-2.0.x that I downloaded and built yesterday. M122 output shows a connection to all Trinamic drivers with no unexpected register values.

M906 Z2500 Z22500 results in only Z being set to 2.5A.

M906 Z2500 results in only Z being set to 2.5A.

The printer prints fine and both Z motors work correctly, just can't set the current on Z2 from the console.

Can you try with M906 I1 Z10 ? Mine doesn't work either Also does Z2 shows on console?

[sn4k3]

After use bugfix2.0 it start work as expected

[teemuatlut]

Please always remember to close the issue when a successful solution has been found =)

[github-actions[bot]]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.