Balluff BIS U-4A7-082-01C-07-S4 Betriebsanleitung Seite 149

BIS U-4A7-082- _1C-07-S4
Industrial RFID system - Read/write head
8
System integration (continued)
3. Read 62 bytes at read/write head, start
address 10, problem while reading
If a problem occurs after data sending has
started, the AF bit is delivered instead of the AE
bit with the corresponding status number. The
AF status message is dominant. It is not
possible to specify which data is not correct.
Setting the AF bit cancels the assignment and
declares it as finished.
Controller
1. Process output buffer
(note sequence):
0x01 Command recognition 0x01
0x02 Start address 0x0A
0x03 Start address 0x00
0x04 Number of bytes 0x3E
0x05 Number of bytes 0x00
0x00/0x1F Set AV bit
3. Process input buffer:
0x01...0x1E Copy first 30 bytes
Process output buffer:
0x00/0x1F Invert TI bit
5. Process input buffer:
0x01 Copy status number
Process output buffer:
0x00/0x1F Reset AV bit
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Identification system
2. Process input buffer
(note sequence):
0x00/0x1F Set AA bit
0x01...0x1E Enter first 30 bytes
0x00/0x1F Invert TO bit
0x00/0x1F Set AE bit
4. Process input buffer:
When problem has occurred!
0x01 Enter status number
0x00/0x1F Set AF bit
6. Process input buffer:
0x00/0x1F Reset AA and AF bits
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