Newland NL-PP60, User Manual

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4.2.2 Command Description
Choose the designated operational directory. The purpose of directory partition is for
insolating different applications. Each sensitive service operation is done in its own
subdirectory, so it is controlled by its subdirectory’s authentication KEY. This command is
for choosing current directory for all further operations. When current directory has been
selected, it won’t be changed until user chooses other directory or using the reset command.
4.3 UID setting
4.3.1 Command Interface
Sending data
CMD LEN DATA EDC
0x94 0x16 UID(16 bytes) Verification
UID: User ID, 16-bytes in plaintext, which is used for identifying the PINPAD and
generating authentication code. Once it has been set, no change is allowed.
Responding data package:
Finish the UID setting correctly, responding data package:
CMD LEN EDC
0x94 0x00 Verification
If setting wrong, the responding data package is:
CMD LEN DATA EDC
0x14 0x01 Error Code Verification
Error Code:
0x01 Sending Data Length Field Error
0x0d EDC error
0xe1 UID have been set already
0xff Exception