Datalogic Gryphon I GFE4500, Product Reference Manual

Page: 235 / 312

RS-232/USB COM PARAMETERS
PRODUCT REFERENCE GUIDE
221
NAK Character
This setting specifies an ASCII character or hex value to be used as the NAK character.
ASCII characters or any hex value from 0 to 0xFF can be selected.
To set this feature:
1. Determine the desired character or value.
2. Use the ASCII Chart on
page 294
to find the hex equivalent for the desired charac -
ter/value.
3. Scan the ENTER/EXIT PROGRAMMING MODE bar code to enter Programming
Mode.
4. Scan the bar code: SELECT NAK CHARACTER SETTING.
5. Scan the appropriate two alpha-numeric characters from the keypad in
Appendix E
, that represent the desired character/value determined above. The
second character will cause a two-beep indication.
6. Scan the ENTER/EXIT PROGRAMMING MODE bar code to exit Programming Mode.
This completes the procedure. See the table below for examples of how to set this fea -
ture.
Table 5 - NAK Character Setting Examples
NOTE: Setting to previously defined characters such as XON, XOFF, or host
commands conflicts with normal operation of these characters. 8-bit data
is not recognized when the option Data Bits on
page 27
has been set as 7
Data Bits.
STEP ACTION EXAMPLES
1 Desired Character/Value NAK $ @ >
2 Hex equivalent
0x15 0x24 0x40 0x3E
3 Scan ENTER/EXIT PROGRAMMING MODE
4 Scan SELECT NAK CHARACTER SETTING
5
Scan two characters from
Appendix E
‘1’ and ‘5’ ‘2’ and ‘4’ ‘4’ and ‘0’ ‘3’ and ‘E’
6 Scan ENTER/EXIT PROGRAMMING MODE