User's Manual Part 3

Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology
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6
RS 485/232 Communication Protocol
6.4.2.2. R_Status Field Structure
The READER's STATUS field is 4 bytes.
Byte A Byte B Byte C Byte D
Byte A represents the status of the main motherboard MCU.
The other bytes represent the RF modems' status.
In a general Reader response the R-Status reply contains
bytes A&B only.
In a GET Status command, the reply contains all the R-Status
bytes.
Byte A:
7 6 5 4 3 2 1 0
LCK 485 PCR PER VCCERR VBERR PMC EDC
Where:
LCK
485
PCR
If the response shows 0, the READER's parameters
are locked.
If the response is 1, the READER's parameters
are unlocked.
If the response is 0, the READER is using RS-232
mode for communication.
If the response shows 1, the READER is using
RS-485 mode for communication.
If the response shows 0, the parameters in the MCU's
2
E ROM are OK.
If the reponse is 1, parameters were corrupted and
successfully restored.