Omron V440-F, User Manual

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Appendices
M-12 V440-F C-Mount Code Reader User Manual
M-8 Reader Status Requests
The reader responds to a status request
<?>
with a two character hex value, such as
<?/22>
. To deter-
mine status:
1
Look up the binary conversion in the table below.
For example, the first hex
2
would be
0 0 1 0
in binary, as read from binary digits
3
through
0
;
the second hex
2
is also
0 0 1 0
as read from binary digits
7
through
4
.
2
Next, enter your binary values from the table below in the “Binary” column next to the
appropriate bit.
3
Under “Binary,” interpret
1
s as true and
0
s as not true. For example, bit 1 has a
1
in the “Binary”
column, indicating “Command Received”. Bit 5 is also a
1
, indicating that the “Reader is in a
read cycle”.
This is the fastest way to learn the reader’s current configuration. Sending this request will return the
current settings of all commands, starting with the lowest K command value and ending with the highest
K command value.
This request will return all current descriptors for every K command, starting with the lowest K com-
mand value and ending with the highest K command value.
M-8-1 <?> Status Byte
Bit Binary Reader Status
0 0 Command error detected
1 1 Command received
2 0 Communication error detected
3 0 Reserved
4 0 Host port buffer overflow
5 1 Reader is in a read cycle
M-8-2 <K?> All Status Request
M-8-3 <K??> All Descriptor Status Request
Hex
Value
Binary
Bit Digits
7 6 5 4
3 2 1 0
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1