Rockwell-automation 56RF RFID System User Manual Manual do Utilizador descarregar pdf (Página 113)

Rockwell Automation Publication 56RF-UM001A-EN-P - October 2011 113

Chapter 11

MicroLogix 1400 Code Examples

Read Byte

The Read Byte command (value =4) reads a user-specified number of bytes from

a tag, starting at a user-specified address. Additionally, an Option Flag can be set

to return the UUID of the tag.

•Option Flag 0 – Returns the specified user data

•Option Flag 1 – Returns the UUID of the tag and the specified user data

Note: This command operates only on the first tag in the field.

Example Routine

• Rung 0000: Place RFID interface into the Run Mode. The bit should be

highlighted in green. If the bit is not green, right-click it and click

To gg l e B it .

• Rung 0001: Read Input Image. Double-click the MSG box to enter the

setup screen. Input size is 116 bytes (58 words). Click on the MultiHop

tab to set up an EtherNet/IP Device.

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Rockwell-automation 56RF RFID System User Manual Manual do Utilizador Página 113