BIS M-62_ MANUAL
130
9
(See the
Green
changes below)
Output Buffer
Input Buffer
Byte #
Value
Byte #
Value
00:
80
Output Buffer Control Byte
(OBCB)
7 6 5 4 3 2 1 0
[1] [0] [0] [0] [0] [0] [0] [0]
00
80
Input Buffer Control Byte
(IBCB)
7 6 5 4 3 2 1 0
[1] [0] [0] [0] [0] [0] [0] [0]
01:
00
(Always 0)
01:
00
02:
0C
(Packet length in bytes)
02:
00
03:
04:
05:
06:
07:
08:
09:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
..
30:
00
06
AA
07
00
01
03
E8
00
00
00
00
00
00
00
00
00
00
..
00
(CBx Command word length MSB)
(CBx Command word length LSB)
Minimum of 6 words
(CBx Command Type)
Always AA
(CBx Command Opcode)
0x07 = Read Tag ID
(CBx Command, byte not used)
(CBx Command “Node ID”)
(CBx Command Timeout MSB)
(CBx Command Timeout LSB)
0xE8 = 1000 ms timeout
(CBx Command Not Used)
(CBx Command Not Used)
(CBx Command Not Used)
(CBx Command Not Used)
03:
04:
05:
06:
07:
08:
09:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
..
30:
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
..
00
31:
80
Data Consistency Byte (OBDCB)
31:
80
Data Consistency Byte (IBDCB)
Now that the command is in the Output Buffer, The Master alerts the Slave that the
command is ready. It does this by toggling
Bit 1
of the
Output Buffer Control Byte
(the
OBCB
) and then also toggling the same bit in the
Output Buffer Data Consistence Byte
(the
OBDCB
).
NOTE
This bit is a toggle. So if it is 0, it is toggled to 1 to indicate a new command.
If it is 1, it is toggled to 0 to indicate a new command. If the bit is 1, setting it
to 0, and then back to 1 will cause the command to be issued twice.
Содержание BIS M-62 Series
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Страница 188: ...RFID OPERATING PRINCIPLES 181 11...
Страница 198: ...RFID OPERATING PRINCIPLES 12 No 896 712 726 EN Edition A17 Subject to modification Replaces edition L14...