AI4100 Portable AEI Reader
39
March 2, 2015
6
Vehicle initial (reporting marks) Four
alpha
characters
The field is filled with spaces if the
vehicle initial is less than four
characters
7
Vehicle number
One to six digits
8
Side indicator
Left or Right
9
Length in decimeters
1 to 4 digits
10
Number of axles
1 to 2 digits
11
Bearing code
1 digit from 0 to 7
(see AAR Specification S-918 for
codes)
12
Platform code (for railcars only)
1 to 2 digits from 0 to 15
(see AAR Specification S-918 for
codes)
The following are examples of records created when tags are read:
01/16/2006 10:58,0001,"51",”1”,"5","NS ","1526","Left","183","4","1"
01/16/2006 10:58,0002"51",”1",”19","UP ","123456","Left","161","4","1","0"
01/16/2006 10:58,0003"51",”1”,"19","CSX ","987654","Right","193","6","1","0"
01/16/2006 10:58,0004"51","1”,”19","DEFX","112344","Left","185","4","1","0"
You can specify if the portable reader must receive an acknowledgement message from your
device before deleting the AEI tag data message in the portable reader. If this option is
selected and it does not receive an acknowledgement message, it will continue to try to send
the AEI tag data message until an acknowledgement is received.
The following table is the layout of the acknowledgement message:
Field Description
Values
1 ACK
ACK
2
Sequence Number of the message
being Acknowledged
Numeric 4 digits
The sequence number of the file from 0
to 9999. This sequence number is
incremented each time a new file is
created. When it reached 10,000, it is
reset to 0
The following is example of an acknowledgement record:
ACK,0001