Last Item Sequence Number
The Last Item Sequence Number is written with the Item Sequence Number by the Originator (PLC) to acknowledge the
receipt of the Item Data. If fragmentation is used, this value is not written until the complete message is received.
Output Bits
The Output Bits attribute is a bitmap used to control the state of the eight discrete outputs to the ABR reader.
Last Fragment Sequence Number
The Last Fragment Sequence Number is written with the Fragment Sequence Number by the EtherNet /IP Originator (PLC)
to acknowledge the receipt of an individual fragment. If fragmentation is not used, this value does not need to be written.
Outputs from the Sensor (Inputs to the PLC)
PLC Assembly Instance 100 (0×65) - 138 Registers (Sensor Outputs/PLC Inputs) T > O
Data transfer direction: Target (ABR) to Originator (PLC). Assembly instance 100 is the data sent back to the PLC to give the
result of the last reading attempt, and the result message string if any.
WORD #
WORD NAME
DATA TYPE
0
Item Sequence Number
8-bit integer
1–2
Item Status
16-bit integer
3–4
Item Data Size
16-bit integer
5
Input Bits
8-bit integer
6
Failure Code
8-bit integer
7
Fragment Sequence Number
8-bit integer
8–9
Fragment Data Size
16-bit integer
10–137
Fragment Data
128 character string
Item Sequence Number
The Item Sequence Number is incremented by one on every new Item Data production. The Item Sequence Number is set
to zero at power up. Once an Item Data packet is ready to transmit, the Item Sequence Number is set to one. This number
does not increment again until the Originator (PLC) reports that it received the item by putting the matching Item Sequence
Number into its Last Item Sequence Number register.
Item Status
The Item Status Code is the status of the last reading attempt and is always updated live regardless of whether the PLC has
finished receiving all the fragments of the previous message. The following table shows the status codes and their
meanings.
Item Status Code
Item Status Name
0×0000
Good Read
0×0001
Complete, No Read
0×0002
Partial Read
0×0003
Multiple Read
0×0004
Wrong Read
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