Microscan MS-710, Руководство пользователя

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Chapter 9 Utilities
MS-710 Scanner User’s Manual
9-17
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Scanner Status Requests
<?> Scanner Status Byte
The scanner responds to a status request <?> with a single ASCII character, for exam-
ple a symbol F .
To determine the status:
1. Look up the hex conversion in an ASCII to hex table, Table A-8, “ASCII Table
with Control Characters,” on page A-17
. The ASCII
F
character corresponds
to 46 in hex.
2. Look up the binary conversion for 46 in table 9-2 .
For example, the 4 in binary would be 0 1 0 0 as read from binary digits 3
through 0; the
6
the binary digits 7 through 4 which is
0 1 1 0
. Note that for this
example, the binary bits are read from left to right.
3. Next, enter your binary values in
table 9-3
in the
“Binary” column next to the appropriate bit.
4. Under “Binary,” interpret 1 s as true and the 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 indi-
cating that the “Scanner is in a read cycle.”
<?1 > Extended Status
The scanner responds to an extended status request <?1>
with several fields, for example: <p><35-337010-
33,9986,9986,51,51>.
These represent: the status byte
<p>, the application part number (<35-337010-
33), the checksum (9986,9986), current RAM parameter checksum (51,51>).
<K?> Configuration Command Status
Returns the current status of all configuration commands.
Table 9-3 Scanner Status
Bit Binary Scanner Status
0 0 Command error detected
1 1 Command received
2 0 Communication error detected
3 0 Flash sector unprotect failure
4 0 Scan motor or reading disable
5 1 Scanner is in a read cycle
6 1 Always 1
7 0 Always 0
Table 9-2 Hex
Value to Binary
Conversion
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