Editing IBM 3270 (section)

====CUT vs. DFT====
There are two types of 3270 displays in respect to where the 3270 data stream terminates. For CUT (Control Unit Terminal) displays, the stream terminates in the display controller, the controller instructs the display to move the cursor, position a character, etc. EBCDIC is translated by the controller into '3270 Character Set', and keyboard scan-codes from the terminal, read by the controller through a poll, is translated by the controller into EBCDIC. For DFT (Distributed Function Terminal) type displays, most of the 3270 data stream is forwarded to the display by the controller. The display interprets the 3270 protocol itself.

In addition to passing the 3270 data stream directly to the terminal, allowing for features like EAB — Extended Attributes, Graphics, etc., DFT also enabled multi sessions (up to 5 simultaneous), featured in the 3290 and 3194 multisession displays. This feature was also widely used in 2nd generation [[3270 emulator|3270 terminal emulation]] software.

The MLT — Multiple Logical Terminals feature of the 3174 controller also enabled multiple sessions from a CUT type terminal.

{| class="wikitable sortable"
|+ CUT vs. DFT
|-
! Display Station Name !! CUT vs. DFT
|-
| 3178 — all models || CUT
|-
| 3179 — Model 1 || CUT
|-
| 3179 — Models G1, G2 || DFT
|-
| 3180 — Model 1 || CUT
|-
| 3191 — all models || CUT
|-
| 3192 — Models C, D, F, L, W || CUT
|-
| 3192 — Model G || DFT
|-
| 3193 — all models || DFT
|-
| 3194 — all models || DFT
|-
| 3277 — all models || CUT
|-
| 3278 — all models || CUT
|-
| 3279 — all models || CUT
|-
| 3290 — all models || DFT
|-
|3472 — except model G
|CUT
|-
|3472 — model G
|DFT
|-
|3482 — all models
|DFT
|}