The Trident Time Machine sends only one type of tag data message. For data stream and logged via the FILTERED TCP/IP port the read type being FS (First Seen), LS(Last Seen) or BS(Best seen) is attached to the tag data message. The tag data message consists of 40 alphanumeric characters as detailed below:
| SYMBOL | LEN | DESCRIPTION |
|---|---|---|
| aa | 2 | Prefix for all tag read data messages |
| R | 1 | Reader ID: Can be A to Z or a to z giving 52 possible reader ID’s |
| 1 | 1 | Receiver ID: Corresponds to the receiver/mat that detected the tag. 1=RX1, 2=RX2 etc. |
| 222222222222 | 12 | Tag ID: The unique serial number programmed into each tag |
| 3333 | 4 | Contiguous Counter: The number of times this tag was read since the last tag timeout. |
| 444444 | 6 | Date: The date the tag was seen, in format YYMMDD |
| 555555 | 6 | Time: The time the tag was seen, in format HHMMSS |
| HH | 2 | Hundredths: Hexadecimal representation of the tag seen time hundredths of a second. eg. 10 represents 16/100 of a second, 63=99/100 of a second. |
| 77 | 2 | Padding characters, always 00 |
| TT | 2 | Record Type: FS=FirstSeen, LS=LastSeen, BS=BestSeen, RR=RawRecord. Please note RR messages are not sent across the |
| SS | 2 | Signal Strength: Hexadecimal representation of the signal level received from the tag. |