Rockwell Automation 56RF RFID System User Manual - Manual (Page 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
Toggle Bit
.
• 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.