Kodak DryView 8150 Safety Manual page 47

September 2002
Special Read Block Command (0F
hex
Reads blocks of data from a Tag-it HF transponder. The address flag should not be
used. The data section contains a single byte detailing the blocks to be read. Each bit
of this byte represents a block of data (bit 0 = block 0 etc) if a bit is set then that block
is read. If the data byte is zero then only the SID is returned. The SID is always
retrieved first and then used to read the selected blocks in addressed mode.
Example
Read blocks 0, 3 & 4 of a Tag-it HF transponder (data byte = 00011001
Request packet
01 0A 00 00 00 00 0F 19 1D E2
The data section of the response packet contains:
The SID address (LSbyte first),
Block 0 data (if selected) followed by a single byte indicating the lock status and then
another single byte containing the block address,
Block 1 data (if selected) followed by a single byte indicating the lock status and then
another single byte containing the block address,
Block 7 data (if selected) followed by a single byte indicating the lock status and then
another single byte containing the block address,
(The two LSB's of the lock status bytes reflect the blocks two lock bits in the
transponder.)
Example
Response packet
01 1F 00 00 00 00 0F 23 4F 10 00 EF CD AB 89 00 00 33 22 11 00 00 03
67 45 23 01 00 04 6A 95
00104F23 SID
hex
89ABCDEF read from unlocked block 0 of a Tag-it HF transponder.
hex
00112233 read from unlocked block 3 of a Tag-it HF transponder.
hex
01234567 read from unlocked block 4 of a Tag-it HF transponder.
hex
S6350 Midrange Reader Module - Reference Guide
)
hex
hex
21
= 19 )
bin hex