Write multiple blocks, Example routine – Rockwell Automation 56RF RFID System User Manual User Manual

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

Chapter 11

MicroLogix 1400 Code Examples

• 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.

• Rung 0002:

Write Output Image. Double-click the MSG box to enter the

Setup Screen. Output Size is 124 bytes (62 Words). Click on the
MultiHop tab to set up an EtherNet/IP Device.

• Rung 0003:

The Tag Present bit will be highlighted in green when a tag is

present. When a tag is present, clear the command value.

• Rung 0004:

When the command value has been cleared, load in the

instruction parameters contained in N102 (Read Multiple Blocks).

• Rung 0005:

Wait for the read command to run. The Read in Progress bit

will be highlighted in green when the command is running. When the
command has completed, the Read in Progress bit will return to its original
state. When the command has been executed and completed, copy the data
read into N100.

• Rung 0006:

If there was an error with the operation, then N100:0 will

contain the error code.

Write Multiple Blocks

The Write Multiple Blocks command (value = 11) writes multiple blocks of user
data to an FRAM tag.

Note:

This command will only work on FRAM tags. Unless a UUID is specified,

this command will operate 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”.