User's Manual

CHAPTER 2
14
Communications Protocol
Chapter 2: Communications Protocol
This chapter describes the protocol that you need to use to send instructions from
your PC to the micro-reader. It also describes the protocol that the micro-reader uses
to respond to the PC.
Topic Page
2.1 Protocol PC to Micro-reader .....................................................................15
2.1.1 Start Mark.............................................................................................15
2.1.2 Length ..................................................................................................15
2.1.3 Command Field....................................................................................16
2.1.4 Data Field.............................................................................................17
2.1.5 BCC......................................................................................................18
2.2 Protocol Micro-reader to PC .....................................................................18
2.2.1 Start Mark.............................................................................................18
2.2.2 Length ..................................................................................................18
2.2.3 Status...................................................................................................19
2.2.4 Data Field.............................................................................................19
2.2.5 BCC......................................................................................................19