NOTE: The full TM88v manual can be found at https://files.support.epson.com/pdf/pos/bulk/tm-t88v_hwum_en_02.pdf

Cable Selection

A 9 pin female to 25 pin male serial cable is required for connecting to a Epson TM88v. The correct choice of serial cable is a factor for a successful print. 

If the print fails and all is set up as below try swapping the cable for another make or brand.

A Serial to USB converter is also required, the Connector only has USB ports directly available. 

Please speak to your K3 Consultant if you need further advice on this.

Baud Speed - Hardware Setting

To physically set the DIP switches you will need a cross head screwdriver. 

Switch off the TM88v and unplug for the mains supply.

Locate the metal cover on the underside of the TM88v

Set the switches 7 and 8 to the On position on DSW1, the other switches across both banks can be left.

Replace the metal cover, turn the TM88v back over and restore the power supply. Power on the TM88v.











Baud Speed - Software Setting

Set the TM88v baud rate to 38400. This needs doing via the hardware dip switches as above. It is advised that the steps below are checked even if the self-test/Firmware Version print out (step 2 below) states the baud speed is already set to 38400, it has been found that the self-test/Firmware Version print out values can be displayed incorrectly.

  1. Power off the TM88v, press and hold the Feed button whilst powering on the TM88V
  2. Release the Feed button once the Firmware Version page has printed
    • This page will show both Baud Rate and DIP Switch settings. This information needs to be checked using the remaining steps here
  3. Press the Feed button for 1 second or more, the Mode Selection page is printed
  4. Press the Feed button 3 times quickly then press and hold the Feed button to show the Customise Value Settings page
  5. Press the Feed button 3 times quickly then press and hold the Feed button to show the Baud Rate page
  6. Check the default and current set values match the port settings i.e. 38400bps
  7. To change the Current Set Value, press the Feed button 5 times (38400bps) quickly then press the Feed button for more then 1 second. The new baud rate will be shown as Saved
  8. Turn off the TM88v then turn back on without pressing or holding the Feed button


Below is an excerpt of the Serial Interface settings for the DIP switches. Highlighted are the relevant parts for setting the Baud speed to 38400.