Rockwell-automation 56RF RFID System User Manual User Manual download pdf (Page 122)

122 Rockwell Automation Publication 56RF-UM001A-EN-P - October 2011

Chapter 12 RFID Tag Speed

Mode Overview

1. Mode 0

The interface waits for the delay time, sends out a read, obtains data, and returns

that data back to the PLC. This cycle repeats until a Stop Continuous Read

command is issued.

2. Mode 1

The interface waits for input point 0 to turn ON, waits for the delay timer to

expire then sends out a read, obtains data, and returns that data back to the PLC.

This cycle repeats until a Stop Continuous Read command is issued.

3. Mode 2

The interface waits for input point 1 to turn ON, waits for the delay timer to

expire then sends out a read, obtains data, and returns that data back to the PLC.

This cycle repeats until a Stop Continuous Read command is issued.

4. Mode 3

The interface waits for both input point 0 and 1 to turn ON, waits for the delay

timer to expire then sends out a read, obtains data, and returns that data back to

the PLC. This cycle repeats until a Stop Continuous Read command is issued.

Command Structure

a. xx:O.Channel[0].Reset =0

b. xx:O.Channel[0].Command = 5

c. xx:O.Channel[0].BlockSize = Bytes per Block in the tag

d. xx:O.Channel[0].Address = Starting Block

e. xx:O.Channel[0].Length = Number of blocks to read

f. xx:O.Channel[0].Timeout = Delay time between sending commands

g. xx:O.Channel[0].UIDLow = 0

h. xx:O.Channel[0].UIDHi = 0

i. xx:O.Channel[0].Data[0] = Mode x

j. xx:O.Channel[0].Data[1] = Option Flag

Address – Block within the tag to start read operations from.

BlockSize – Size in bytes per block of the tag.

Length – Number of blocks to read

Timeout – Delay time between sending command attempts in Mode 0.

Delay time after input condition is true before sending commands in Mode 1-3.

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Rockwell-automation 56RF RFID System User Manual User Manual Page 122