User's Manual
Table Of Contents
- TABLE OF CONTENTS
- 1 GETTING STARTED 1
- 2 MECHANICAL SPECIFICATIONS 4
- 3 POWER AND ELECTRICAL INTERFACE 14
- Power from the MUX32 bus and from an ex ter nal power sup ply 26
- 3.9 LED In di ca tors 27
- 4 SERIAL AND BUS COMMUNICATIONS 29
- 5 MENU CONFIGURATION 34
- 6 RFID INTERFACE 41
- 6.1 In tro duc tion 41
- 6.2 ABx Er ror Codes 44
- 6.3 Anticollision Com mands 47
- 6.4 ABx Stan dard Pro to col 49
- ABxS Com mand 4 (04H): Fill Tag 49
- ABxS Com mand 5 (05H): Block Read 51
- ABxS Com mand 6 (06H): Block Write 53
- ABxS Com mand 7 (07H): Read Tag Se rial Num ber 55
- ABxS Com mand 8 (08H): Tag Search 56
- ABxS Com mand D (0DH): Con tin u ous Block Read 57
- ABxS Com mand 10 (10H): Set Out put 60
- ABxS Com mand 11 (11H): In put Sta tus 62
- ABxS Com mand 84 (84H): Fill Tag All 64
- ABxS Com mand 85 (85H): Block Read All 66
- ABxS Com mand 86 (86H): Block Write All 68
- ABxS Com mand 87 (87H): Read Tag SN All 70
- ABxS Com mand 88 (88H): Tag Search All 72
- ABxS Com mand 89 (89H): EAS Set/Re set All 73
- ABxS Com mand 8A (8AH): EAS Start/Stop 75
- ABxS Com mand 8D (8DH): Con tin u ous Read All 77
- ABxS Com mand 8E (8EH): Mem ory Lock All 79
- ABxS Com mand 94 (94H): SN Fill 81
- ABxS Com mand 95 (95H): SN Block Read 83
- ABxS Com mand 96 (96H): SN Block Write 85
- ABxS Com mand 97 (97H): SN Block Read All 87
- 6.5 ABx Fast Pro to col 89
- ABx Com mand Packet Struc ture: 89
- Com mand/Re sponse Size 90
- Checksum 91
- ABxF Com mand 4 (04H): Fill Tag 92
- ABxF Com mand 5 (05H): Block Read 94
- ABxF Com mand 6 (06H): Block Write 96
- ABxF Com mand 7 (07H): Read Tag Se rial Num ber 98
- ABxF Com mand 8 (08H): Tag Search 100
- ABxF Com mand D (0DH): Con tin u ous Block Read 101
- ABxF Com mand 10 (10H): Set Out put 104
- ABxF Com mand 11 (11H): In put Sta tus 106
- ABxF Com mand 84 (84H): Fill All 108
- ABxF Com mand 85 (85H): Block Read All 110
- ABxF Com mand 86 (86H): Block Write All 112
- ABxF Com mand 87 (87H): Read Tag SN All 114
- ABxF Com mand 88 (88H): Tag Search All 116
- ABxF Com mand 89 (89H): EAS Set/Re set All 118
- ABxF Com mand 8A (8AH): EAS Start/Stop 120
- ABxF Com mand 8D (8DH): Con tin u ous Read All 123
- ABxF Com mand 8E (8EH): Mem ory Lock All 126
- ABxF Com mand 94 (94H): SN Fill 128
- ABxF Com mand 95 (95H): SN Block Read 130
- ABxF Com mand 96 (96H): SN Block Write 132
- ABxF Com mand 97 (97H): SN Block Read All 134
- 6.6 ABx ASCII Pro to col 138
ABxS Command 95 (95H): SN Block Read
DESCRIPTION
Read a block of data from a specified RFID tag.
DISCUSSION
This command is used to read segments of data from contiguous areas of tag
memory. It is capable of handling up to 48 bytes of data transferred to the
host with one command if there is no tag Family ID. The timeout value is
given in 1 msec increments and can have a value of 1EH to FFFEH (65,534
ms). When the timeout is set to 0, the LRP820 will return a syntax error.
The SN Block Read consists of Family ID and an Anticollision Index, a start
address and length, followed by a timeout value. The 8-byte serial number of
the target tag is specified. If the read length exceeds the last tag address, the
LRP820 will return error message in the status byte. It returns a response
when done or when the timeout expires.
The data read from the tag is returned in the LSB of the register, and the
MSB is always 00H. A special error packet (AAH FFH) is sent if the time-
out expires.
Field Remarks
Command Command number in hex preceded by AAH
Tag Family Tag Family ID - 00H = all tags
Anticollision index Number of tags expected
Start Address The tag address where the read will start
Read Length The numbers of tag addresses to be read
Timeout Timeout value given in 1 ms units (1EH - FFFEH)
Tag Serial Number 8-byte tag serial number
Message Terminator FFFFH
Copyright © 2000 Escort Memory Systems
LRP820-Series Long-Range Passive Reader/Writer
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