Magtek eDynamo - Page 90

8 - Commands
eDynamo| Secure Card Reader Authenticator | Programmer’s Manual (COMMANDS)
Page 90 of 245 (D998200115-17)
Table 8-33 - Response Data for Command 0x49 - Send Extended Command Packet (Extended Commands
Only)
Offset
Field Name
Description
0..1
Extended Data
Offset
This field is in big endian format. It indicates the byte offset position of this
packet’s Extended Data field, relative to the complete extended data field
being sent as multiple packets. The first byte is offset zero.
1..2
Extended
Result Code
This field is in big endian format. For one-byte result codes, the high byte is
set to zero.
4..5
Complete
Extended Data
Length
This field is in big endian format and gives the total length of the extended
data field the host is sending as multiple packets.
6..n
Extended Data
This field contains either part or all of the complete Extended Data response
the device is sending to the host. The size of this Extended Data field can be
determined by subtracting the Extended Data field’s offset within the response
(6) from the response’s total data length (N). In most cases the response’s
complete data payload can have a maximum length of 58 (for example see
section 2.1.2 How to Send Commands On the USB Connection), so this
field can have a maximum length of 58 - 6 = 52 bytes.
Result Codes:
See command description.
Example Request (Hex)
Cmd Num
Data Len
Data
49
06
00 00 03 0D 00 00 [Extended Command
0x030D - Read Date and Time]
Example Response (Hex)
Result Code
Data Len
Data
0A
0D
00 00 00 00 00 07 06 14 11 00 00 00 01
(6/20/2009 5:00pm)