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Datalogic Gryphon I GFS4100 Manual

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RS-232 Parameters
Product Reference Guide
235
ACK NAK Options
This enables/disables the ability of the reader to support the RS-232 ACK/NAK protocol.
When configured, the reader 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 reader expects an ACK/NAK response from the host
when a
label is sent.
•
Enable for host-command acknowledge — The reader will respond with ACK/NAK
when t
he host sends a command.
• Enable for label transmission and host-command acknowledge
The ACK/NAK Characters must be different and must not contain reserved
characters (see
Appendix E, Reserved Characters
).
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.
Setting to previously defined characters such as XON, XOFF, or host com-
mands conflicts with normal operation of these char
acters. 8-bit data is not
recognized when the option
Data Bits
has been set as 7 Data Bits.
1. Determine the desired character or value. Use the ASCII Chart on the inside back cover of
this manual to find the hex equivalent for the desired character/value.
2. Go to page 29 and scan ENTER/EXIT PROGRAMMING MODE to enter Program-
ming Mode.
3. Scan the barcode: SELECT ACK CHARACTER SETTING.
4. Scan the appropriate two alpha-numeric charac
ters from the keypad in Appendix D, Key-
pad, that represent the desired character/value in step 1 above. The second character will
cause a two-beep indication.
5. Scan the ENTER/EXIT PROGRAMMING MODE barcode to exit.
Table 25. ACK Character Setting Examples
STEP ACTION EXAMPLES
1 Desired Character/Value
ACK $ @ >
2
Hex equivalent from
ASCII
Chart
0x06 0x24 0x40 0x3E
3 Scan ENTER/EXIT PROGRAMMING MODE
4 Scan SELECT ACK CHARACTER SETTING
5
Scan Two Characters from
Appendix D, Keypad
‘0’ and ‘6’ ‘2’ and ‘4’ ‘4’ and ‘0’ ‘3’ AND ‘E’
6 Scan ENTER/EXIT PROGRAMMING MODE
… 237 …


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