# "Unable to read tmc uart 'stepper\_x' register IFCNT" Issue **URL:** \ **Category:** General Discussion\ **Created:** [May 1, 2024, 10:09am UTC](https://klipper.discourse.group/t/unable-to-read-tmc-uart-stepper-x-register-ifcnt-issue/16176 "2024-05-01T10:09:45Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![ZJ1](https://avatars.discourse-cdn.com/v4/letter/z/65b543/32.png) [@ZJ1](https://klipper.discourse.group/u/ZJ1)\ **Post date:** [May 1, 2024, 10:09am UTC](https://klipper.discourse.group/t/unable-to-read-tmc-uart-stepper-x-register-ifcnt-issue/16176/1 "2024-05-01T10:09:45Z")
Printer Model: CR-10 MCU / Printerboard: SKR V1.3 Host / SBC: Pi3b+ Hi all, appreciate it if you guys could help me with an issue regarding an error from Klipper (“Unable to read tmc uart ‘stepper\_x’ register IFCNT”) I am facing an issue which Klipper shows me “Unable to read tmc uart ‘stepper\_x’ register IFCNT” (Which I guess all other stepper drives will have this issue too) I have done the following: - Jumpers are installed for UART function (XUART, YUART, ZUART and EUART) - Refer to the attached picture - SKR 1.3 - Standalone pins are removed for the drivers - Powered up the board using power supply - Even tried connecting another 12V line to the port next to the X-axis stepper motor port - Tried swapping the drivers Thank you. [printer.cfg](https://klipper.discourse.group/uploads/short-url/sf17ThonJstXVEXk1r32Ivw5UvY.cfg) (4.2 KB) ---
**Author:** ![ZJ1](https://avatars.discourse-cdn.com/v4/letter/z/65b543/32.png) [@ZJ1](https://klipper.discourse.group/u/ZJ1)\ **Post date:** [May 1, 2024, 10:11am UTC](https://klipper.discourse.group/t/unable-to-read-tmc-uart-stepper-x-register-ifcnt-issue/16176/2 "2024-05-01T10:11:25Z")
Sorry. I had to reply a few times to add the pictures as I am a new user ![SKR 1.3](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/2/2ae6c1dff9aacf27554d1f03ac44dd2460b86b13.jpeg) ---
**Author:** ![ZJ1](https://avatars.discourse-cdn.com/v4/letter/z/65b543/32.png) [@ZJ1](https://klipper.discourse.group/u/ZJ1)\ **Post date:** [May 1, 2024, 10:12am UTC](https://klipper.discourse.group/t/unable-to-read-tmc-uart-stepper-x-register-ifcnt-issue/16176/3 "2024-05-01T10:12:17Z")
Sorry. I had to reply a few times to add the pictures as I am a new user ![TMC 2209](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/6/6f813d341102c64b73294c59899626ed1844dbe6.png) ---
**Author:** ![hcet14](https://avatars.discourse-cdn.com/v4/letter/h/ecd19e/32.png) [@hcet14](https://klipper.discourse.group/u/hcet14)\ **Post date:** [May 1, 2024, 11:16am UTC](https://klipper.discourse.group/t/unable-to-read-tmc-uart-stepper-x-register-ifcnt-issue/16176/4 "2024-05-01T11:16:32Z")
Welcome ZJ1, never forget to post your klippy.log! Good luck, hcet14 ---
**Author:** ![ZJ1](https://avatars.discourse-cdn.com/v4/letter/z/65b543/32.png) [@ZJ1](https://klipper.discourse.group/u/ZJ1)\ **Post date:** [May 1, 2024, 11:33am UTC](https://klipper.discourse.group/t/unable-to-read-tmc-uart-stepper-x-register-ifcnt-issue/16176/5 "2024-05-01T11:33:46Z")
Hi all, I have solved the issue. Thank you! The issue was that the TMC 2209 wasn’t in UART mode, so I got to solder two pads together. After soldering those two pads together, it solved the issue. ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [May 1, 2024, 11:59am UTC](https://klipper.discourse.group/t/unable-to-read-tmc-uart-stepper-x-register-ifcnt-issue/16176/6 "2024-05-01T11:59:23Z")
Great! Would you mind sharing your solution? ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [May 3, 2024, 8:43pm UTC](https://klipper.discourse.group/t/unable-to-read-tmc-uart-stepper-x-register-ifcnt-issue/16176/7 "2024-05-03T20:43:18Z")