User's Manual

MPR series User’s Manual: Draft version 0.95 11/4/04 page 47

1.6.7.2.3.3 Class0 Plus INIT Subcommand (02

)

Performs a Class 0 Plus (Impinj/ZUMA) INIT command. If a filter is supplied, tags are first singulated

then processed. If no filter is supplied, the global mode is used for processing.

Request Packet

Opcode

0x18

Command Data

Antenna

1 byte

0x00: Ant A

0x01: Ant B

RF Power Level

1 byte

0x01 (min) – 0xFF (max)

Singulation

(Negotiation

Page) Field

1 byte

0x00 (ID0)

0x01 (ID1)

0x02 (ID2)

Subcommand

1 byte

0x02

Lock Flag

1 byte

0x00 (Do Not Lock)

0x01 (Lock)

Filter Bit Count

1 byte

0-64 or 0-96

Filter Bits

0-12 bytes

Tag ID filter bits are left justified in bytes, MSByte is sent first

Note: Any tag that processes this command MUST then complete a power cycle.

Note: Singulation Fields ID0 & ID1 are not implemented yet.

Response Packet

Status

0x00 (Complete)

Total Tags reported

2 bytes

Under-run error count

2 bytes

Tag CRC error count

2 bytes