USB COM PARAMETERS
PRODUCT REFERENCE GUIDE
149
ACK NAK Options
This enables/disables the ability of the scanner to support the ACK/NAK protocol. When
configured, the scanner and/or host sends an “ACK” when it receives data properly, and
sends “NAK” when the data is in error.
Options are:
• Disable
• Enable for label transmission — The scanner expects an ACK/NAK response from
the host when a label is sent
• Enable for host-command acknowledge — The scanner will respond with ACK/
NAK when the host sends a command
• Enable for label transmission and host-command acknowledge
ACK Character
This setting specifies an ASCII character or hex value to be used as the ACK character.
ASCII characters or any hex value from 0 to 0xFF can be selected.
1. Determine the desired character or value.
2. Use the ASCII Chart on
page 204 to find the hex equivalent for the desired charac-
ter/value.
3. Scan ENTER/EXIT PROGRAMMING MODE to enter Programming Mode.
4. Scan the bar code: SELECT ACK CHARACTER SETTING.
5. Scan the appropriate two alphanumeric characters from the keypad in
Appendix D,
that represent the desired character/value determined above. The second charac-
ter will cause a two-beep indication.
6. Scan the ENTER/EXIT PROGRAMMING MODE bar code to exit.
See the table below for examples of how to set this feature.
Table 2 - ACK Character Setting Examples
NOTE: Setting to previously defined characters such as XON, XOFF, or host
commands conflicts with normal operation of these characters.
STEP ACTION EXAMPLES
1 Desired Character/Value
ACK $ @ >
2
Hex equivalent from ASCII Chart
on
page 204
0x06 0x24 0x40 0x3E
3 Scan ENTER/EXIT PROGRAMMING MODE
4 Scan SELECT ACK CHARACTER SETTING
5
Scan two characters from
Appendix D
‘0’ and ‘6’ ‘2’ and ‘4’ ‘4’ and ‘0’ ‘3’ AND ‘E’
6 Scan ENTER/EXIT PROGRAMMING MODE
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