Chapter 2 — Connecting and Configuring the SR61T
24 SR61T Tethered Scanner User’s Guide
To configure the ENQ parameter
• To enable ENQ, scan the following bar codes
\60\02\48\45\00\02\40
• To disable ENQ, scan the following bar code
To configure the ACK parameter
• To enable ACK, scan the following bar code:
\60\02\48\47\00\02\40
• To disable ACK, scan the following bar code
NAK The scanner sends data to the host. If the host does
not like the data then the host must send a NAK
before the hw/sw timeout period expires. If the
scanner receives a NAK from the host then the
scanner resends the data. The scanner resends the
data three times.
LRC The scanner appends the Longitudinal Redundancy
Check , which is two characters, to the end of the
data. The LRC characters are calculated by XOR’ing
the hex values of the first two ASCII characters, and
then XOR’ing the results with the next character.
This pattern is repeated for all data characters.
Configurable RS-232 Protocol Features (continued)
Parameter Description (When Enabled)
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