Status commands – Rockwell Automation 2755 AtomScan Bar Code Reader User Manual
Page 91
6–6
Hardware Operation
Publication 2755-6.9
Status Commands
•
Display Software Part Number,
[<#>]
. Displays software part
number.
•
Display Checksum of EPROM,
[<!>]
. Displays a four-digit hex
number (corresponding to a given firmware version) used to
verify a reader’s EPROM.
•
Show Scanner Status,
[<?>]
. This command is used to display
certain operating parameters (NOVRAM, command, and
operation status). After sending this command, the reader
immediately responds with <X>, where “X” is an ASCII
character. Refer to appendix C for the ASCII table.
To check the reader’s status:
A. Locate the ASCII character’s Hex value in the ASCII table.
For example, the ASCII character “M” has a hex. value of
4D.
B. Compare the hex value to the binary equivalent in the table
below. The binary equivalent of 4D is 01001101. The 0100
is the binary equivalent of the 4 and 1101 is the binary
equivalent of the D.
Hex. Value
Binary Bit Digits
00
0
0
0
0
01
0
0
0
1
02
0
0
1
0
03
0
0
1
1
04
0
1
0
0
05
0
1
0
1
06
0
1
1
0
07
0
1
1
1
08
1
0
0
0
09
1
0
0
1
0A
1
0
1
0
0B
1
0
1
1
0C
1
1
0
0
0D
1
1
0
1
0E
1
1
1
0
0F
1
1
1
1