Microscan Quadrus EZ, Руководство пользователя, Страница: 271 / 366

Quadrus EZ Reader User’s Manual
12-19
Utilities
Reader Status Requests
<?> Reader Status Byte
The reader responds to a status request <?> with a two character hex value, for example
<?/22> . To determine the status:
1. Look up the binary conversion in the hex-to-binary table.
For example, the first 2 in binary would be 0 0 1 0 as read from binary digits 3
through 0; the second 2 the binary digits 7 through 4 which is also 0 0 1 0 .
2. Next, enter your binary values in the “Reader Status”
table in the “Binary” column next to the appropriate bit.
3. 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 indicating
that the “Reader is in a read cycle.”
<?1 > Extended Status
The reader responds to an extended status request <?1> with
several fields.
These represent, in order: the status byte as discussed
above, the boot part number, application part number, FPGA
part number, Flash checksum, and Flash parameter checksum.
<K?> Configuration Command Status
Returns the current status of all configuration commands.
Quadrus EZ Status
Bit Binary Reader Status
0 0 Command error detected
1 1 Command received
2 0 Communication error detected
3 0 Flash sector unprotect failure
4 0 Host/Aux port buffer overflow
5 1 Reader is in a read cycle
6 0 Software Watch dog reset
7 0 Hardware Watch dog reset
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