Magtek MICRSafe, Техническое справочное руководство

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Section 5. USB Communications
27
Property ID is a one-byte field that contains a value that identifies the property. The following
table lists all the current property ID values:
Value Property ID Description
0x00 (0)
Software ID
The device’s software identifier
0x01 (1) Serial Num The device’s serial number
0x02 (2)
Polling Interval
The interrupt pipe’s polling interval
0x04 (4) Track Data Send Flags Track data send flags
0x0F (15)
ASCII To Keypress Conversion Type
Type of conversion performed when
converting ASCII data to key strokes
0x11 (17)
Active Keymap
Selects which key map to use
0x1A (26) Convert From Char A Selects character to use when converting to
string A
0x1B (27) Convert To String A Selects string to use when converting from
char A
0x1C (28)
Convert From Char B
Selects character to use when converting to
string B
0x1D (29)
Convert To String B
Selects string to use when converting from
char B
Property Value
is a multiple-byte field that contains the value of the property. The number of
bytes in this field depends on the type of property and the length of the property. The following
table lists all of the property types and describes them.
Property Type Description
Byte This is a one-byte value. The valid values depend on the property.
String This is a multiple byte ASCII string. Its length can range from zero to
a maximum length that depends on the property. The value and
length of the string does not include a terminating NUL character.
SOFTWARE ID PROPERTY
Property ID:
0
Property Type: String
Length: Fixed at 11 bytes
Get Property: Yes
Set Property: No
Description: This is an 11 byte read only property that identifies the software part number
and version for the device’s USB CPU. The first 8 bytes represent the part
number and the last 3 bytes represent the version. For example this string
might be “22827021A01”. Examples follow:
Example Get
Software ID property Request (Hex):
Cmd Num Data Len Prp ID
00 01 00
Example Get
Software ID property Response (Hex):
Result Code Data Len Prp Value
00 01 32 32 38 32 37 30 32 31 41 30 31