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Technical Note: TNXE220Q001

Subject: One or more keys are not working properly under VT220 Emulation

VT220 Terminal Emulators from different vendors may not have standard key mappings.

For each key that does not work please verify that the escape sequence programmed in your terminal emulator matches the table below. Most of the emulators (the program running on your RF device, client PC or terminal) provide the capability to edit the escape sequence sent when a specific key is pressed.

 The table below shows the escape sequences that the GSW Telnet Server expects to receive from the terminal running the VT220 emulation.

Table in printable PDF Format  Get Free Adobe Reader    

Georgia SoftWorks Telnet Server

www.georgiasoftworks.com

 Industry Standard VT220 Key Mapping

  Key Code Action   Key Code Action
  ESC [ D Cursor left   ESC O P F1
  ESC O D Cursor left   ESC O Q F2
  ESC [ B Cursor down   ESC O R F3
  ESC O B Cursor down   ESC O S F4
           
  ESC [ A Cursor up   ESC [ M F5
  ESC O A Cursor up   ESC [ 1 5 ~ F5
  ESC [ C Cursor right   ESC [ 1 7 ~ F6
  ESC O C Cursor right   ESC [ 1 8 ~ F7
           
  ESC O l Keypad STAR   ESC [ 1 9 ~ F8
  ESC O m Keypad MINUS   ESC [ 2 0 ~ F9
  ESC O M Keypad ENTER   ESC [ 2 1 ~ F10
  ESC O n Keypad DELETE   ESC [ 2 3 ~ F11
        ESC [ 2 4 ~ F12
           
  ESC O p Keypad 0_INS   ESC [ 2 5 ~ SHIFT-F1
  ESC O q Keypad 1_END   ESC [ 2 6 ~ SHIFT-F2
  ESC O r Keypad 2_DOWN   ESC [ 2 7 ~ SHIFT-F3
  ESC O s Keypad 3_PAGEDOWN   ESC [ 2 8 ~ SHIFT-F4
           
  ESC O t Keypad 4_LEFT   ESC [ K SHIFT-F5
  ESC O u Keypad 5   ESC [ 3 1 ~ SHIFT-F6
  ESC O v Keypad 6_RIGHT   ESC [ 3 2 ~ SHIFT-F7
  ESC O w Keypad 7_HOME   ESC [ 3 3 ~ SHIFT-F8
           
  ESC O x Keypad 8_UP   ESC [ 3 4 ~ SHIFT-F9
  ESC O y Keypad 9_PAGEUP   ESC [ 3 5 ~ SHIFT-F10
  ESC [ U Page down   ESC [ 3 6 ~ SHIFT-F11
  ESC [ 6 ~ Page down   ESC [ 3 7 ~ SHIFT-F12
           
  ESC [ H Home      
  ESC [ 1 ~ Home      
  ESC [ V Page up      
  ESC [ 5 ~ Page up      
  ESC [ 2 ~ Insert      
  ESC [ 3 ~ Delete      
  ESC [ 4 ~ End      
  ESC [ Z ~ Tab Backward      

 

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Last modified: April 27, 2004