I'm looking for set of manuals for Markem Smart Date Coder -Model Smart Date 31 or 3i,S/N 05749447.

See page 29 of user manual. It says default TCP port is 9100 by default. RAW TCP is the default print protocol for most print devices.
See page 24 troubleshooting section of user manual. You can download user manual from following website.

https://www.markem-imaje.com/userdocumentation-display/file-download?fileName=2200-Instruction-Manual-A43126-EN.pdf

RTM at
Markem?
or ask them, not sure me what computer this is posted to same.
what is it , tell that first.
is it a printer, (wild guess)

ask them yet,

https://www.markem-imaje.us/

or find the manual find the word RESET , in the manual.?

The Manual option should allow you to set time manually.

Try This

1. If your screen is dim, tap the screen to wake up the watch.
2. Swipe down from the top of the screen.
3. Tap Settings System Date & time. If you don't see Settings right away, swipe left.
4. Tap Automatic date & time.

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it is quite simple but i admit i had to break my head in the begining. i spent hours looking for a user manual for this model online but didn't find one so i'm posting this solution hoping to help someone who need it as well. all u have to do is when the watch is in normal time mode, press the SET button and hold it till u see the seconds flashing. after a few seconds the hour and minute on the main display will start flashing too. u can adjust the time here by pressing the ADJ button. once ur time is set follow the same procedure and set the date too. remember to hold the SET button till u arrive to the date mode which appears after the time mode on the main display. there u go:)

Hey Mat,

You can find your product manual here:

http://www.samsungcamera.com/popup/download.asp?prol_uid=4148&prj_uid=733

You'll find once you download the manual's pdf, it'll be on page 20 of the pdf manual. The sample is below, but it's much clearer on the pdf manual. Best of Luck!

When Using the Camera for the First Time : Setting up the Date / Time and Language
When the camera is turned on for the first time, a menu will be displayed
in the LCD monitor to set date, time and language. This menu will not be
displayed again after setting up the date, time and language. Set up the
date, time and language before using this camera.
■ Setting up the language
1. Press the [Language] menu button.
2. Select a desired language by pressing the
vertical smart button.
■ Setting up the date, time and date type
1. Press the [Date & Time] menu button.
2. Select a desired date type by pressing the
vertical smart button.
3. To change the date, select the [2008/01/01]
menu and press the vertical smart button.
4. To select Year / Month / Day and Hour :
Minute, press the horizontal smart button.
To change the numbers, press the vertical
smart button.London
● You can select any one of 22 languages. These are listed below :
- English, Korean, French, German, Spanish, Italian, S.Chinese,
T.Chinese, Japanese, Russian, Portuguese, Dutch, Danish,
Swedish, Finnish, Thai, Bahasa (Malay / Indonesian), Arabic,
Polish, Hungarian, Czech and Turkish.
● Even if the camera is restarted, the language setting will be
maintained.