Magtek DynaPro Mini Programmer's Manual page 57

3 - Command Set
The value of DFDF44 is always encrypted under the data variant of the MSR DUKPT key.
If an error occurs, the device will terminate the command and report the error in ACKSTS of Command
0x01 - Response ACK. For a full list of error codes, see Appendix C Status and Message Table, Table
3-76.
Table 3-43 - Usage Table for Command 0x31
Bit 7
Byte 0 0x31
Byte 1 Display Time in seconds, (1 - 255; 0 = 256 seconds)
DynaPro Mini| PIN Encryption Device | Programmer's Manual (Commands)
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