W appears in gcode in terminal

What is the problem?

There is this W that appears in the gcode in terminal
T:102.95 /0.00 B:74.43 /80.00 @:0 B@:127 W:?

I recently upgraded from marlin 2.0 to 2.1, both bugfix versions
I just want to know what W stands for, as it never appeared when running marlin 2.0

What did you already try to solve it?

I researched on google for an explanation for W, but was unsuccessful

Have you tried running in safe mode?


Did running in safe mode solve the problem?


Systeminfo Bundle

You can download this in OctoPrint's System Information dialog ... no bundle, no support!)
OK, downloaded and unzipped, now what?

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

browser.user_agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
connectivity.connection_ok: True
connectivity.enabled: True
connectivity.online: True
connectivity.resolution_check: octoprint.org
connectivity.resolution_ok: True
env.hardware.cores: 4
env.hardware.freq: 1500.0
env.hardware.ram: 1909063680
env.os.bits: 32
env.os.id: linux
env.os.platform: linux
env.plugins.pi_support.model: Raspberry Pi 4 Model B Rev 1.1
env.plugins.pi_support.octopi_version: 0.18.0
env.plugins.pi_support.throttle_check_enabled: True
env.plugins.pi_support.throttle_check_functional: True
env.plugins.pi_support.throttle_state: 0x0
env.python.pip: 20.3.3
env.python.version: 3.7.3
env.python.virtualenv: True
octoprint.last_safe_mode.date: 2023-08-22T08:48:22Z
octoprint.last_safe_mode.reason: incomplete_startup
octoprint.safe_mode: False
octoprint.version: 1.9.2
printer.firmware: Marlin bugfix-2.1.x (Sep 2 2023 15:45:43)
systeminfo.generated: 2023-09-03T10:27:41Z
systeminfo.generator: zipapi

Hello @XL777 !

No, Download from OctoPrint and upload here (The complete zip-file).

Could be helpful to know what printer you use.

The W is not in the Gcode, it's a report from the printer firmware.
As you already noted, it came with Marlin 2.1. Maybe the guys at Marlin know more.

octoprint-systeminfo-20230903112741.zip (453.9 KB)
My Printer is a TRONXY X5S CoreXY from 2018. The board has been replaced with a BTT SKR Pro V1.2

Thanks for the info. I will give marlin groups a go.

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The W part of the temperature line becomes a countdown. When you tell the printer to heat up on a blocking command (eg. M109 or M190), as normal at the start of the print, it waits for the temperature to stabilise. This W number becomes a countdown when it is close to finishing as an estimate for how many seconds it is going to wait before confirming the temperature.

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Iirc that stands for wait.
This is the time the printer waits for the temperature to settle.

For example if you set the bed temperature with M190 it shows you a countdown once the temperature reached the target temperature - just to make sure it doesn't start to fluctuate again.

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