Datalogic AV7000 - IO Messaging Ladder Logic Example

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I/O CONTROLLOGIX MESSAGING EXAMPLE

PRODUCT REFERENCE GUIDE

447

Discrete Input Word

Bit

0 Unused

1 Unused

2 Unused

3 Unused

4 Unused

5 Unused

6 Unused

7 Unused

8-15 Unused

Reader:O Output Data

Tag Name Value Description

Reader:O.Data[0] Discrete Output Word See bit definitions.

Reader:O.Data[1]

Last Barcode Sequence Num-

ber Received

This field must be updated to

match the Bar Code Sequence

mber each time the bar

code data has been processed.

Discrete Output Word

Bit Bit = 0 Bit = 1

0* Trigger Off Trigger On

1 – 7 Unused Unused

8* Reader Relay #1 Off Reader Relay #1 On

9* Reader Relay #2 Off Reader Relay #2 On

10* Reader Relay #3 Off Reader Relay #3 On

11* Reader Relay #4 Off Reader Relay #4 On

12-15 Unused Unused

I/O Messaging Ladder Logic Example

The rung of ladder logic below shows an example of how to update the Output data reg-

ister “Last Barcode Sequence Number Received” after new barcode data is present.

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