List of Control Codes

ASCII Code

Abbreviation

Description

1

SOH

Start of Heading

2

STX

Start of Text

3

ETX

End of Text

4

EOT

End of Transmission

5

ENQ

Inquiry

6

ACK

Acknowledgment

7

BEL

Bell

8

BS

Back Space

9

HT

Horizontal Tab

10

LF

Line Feed

11

VT

Vertical Tab

12

FF

Form Feed

13

CR

Carriage Return

14

SO

Shift Out

15

SI

Shift In

16

DLE

Data Link Escape

17

DC1

XON - Device Control 1

18

DC2

Device Control 2

19

DC3

XOFF - Device Control 3

20

DC4

Device Control 4

21

NAK

Negative Acknowledgment

22

SYN

Synchronous Idle

23

ETB

End Transmission Block

24

CAN

Cancel

25

EM

End of Medium

26

SUB

Substitute

27

ESC

Escape

28

FS

File Separator

29

GS

Group Separator

30

RS

Record Separator

31

US

Unit Separator

188

FNC1

Function Code 1

189

FNC2

Function Code 2

190

FNC3

Function Code 3

191

FNC4

Function Code 4