D-17
Appendices
V440-F C-Mount Code Reader User Manual
D-10
LRC (
L
o
ngi
tud
inal R
edu
nda
ncy Ch
eck)
S
tatu
s
D
D
-8-6
TCP Port
2
D-10 LRC (Longitudinal Redundancy
Check) Status
Usage:
Used when extra data integrity is required.
Definition:
An error-checking routine that verifies the accuracy of transmissions. It is
the exclusive OR of all characters following the
STX
(start of text) up to and
including the
ETX
(end of text). What this means is that the binary representation
of all the characters in a transmission are cumulatively added in a column
and each resulting odd integer is assigned a 1 and each even integer a 0
(two 1s = 0, two 0s = 0, a 1 and a 0 = 1). The extra LRC character is then
appended to the transmission, and the receiver (usually the host) performs
the same addition and compares the results.
Serial Cmd:
<
K145,
status
>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled
Summary of Contents for V440-F
Page 1: ...Z452 E 01 84 9000440 02 Rev A V440 F C Mount Code Reader User Manual...
Page 31: ...1 Overview of WebLink Interface 1 16 V440 F C Mount Code Reader User Manual...
Page 139: ...4 Setup 4 76 V440 F C Mount Code Reader User Manual...
Page 183: ...7 Terminal 7 6 V440 F C Mount Code Reader User Manual...
Page 243: ...Appendices A 22 V440 F C Mount Code Reader User Manual...
Page 249: ...Appendices C 4 V440 F C Mount Code Reader User Manual...
Page 283: ...Appendices E 10 V440 F C Mount Code Reader User Manual...
Page 399: ...Appendices I 18 V440 F C Mount Code Reader User Manual...
Page 423: ...Appendices K 14 V440 F C Mount Code Reader User Manual...
Page 437: ...Appendices L 14 V440 F C Mount Code Reader User Manual...
Page 471: ...Appendices N 18 V440 F C Mount Code Reader User Manual...
Page 481: ...Appendices O 10 V440 F C Mount Code Reader User Manual...
Page 493: ...Appendices R 8 V440 F C Mount Code Reader User Manual...
Page 499: ...Appendices S 6 V440 F C Mount Code Reader User Manual...