User's Manual

DRAFT TrimTrac 1.5 Technical Manual v0.3ab 107
alphanumeric password of up to eight characters while the TrimTrac 1.5 is
connected to a Provisioning Module.
The TrimTrac 1.5 checks all incoming messages for a Security Password and all
incoming message must include a Security Password. If the Security Password
included in a message sent to TrimTrac 1.5 does not match the Security Password
configured in the TrimTrac 1.5, then the message is ignored.
Unit ID
The Unit ID must be used in all communications with the TrimTrac 1.5. The
TrimTrac 1.5 may be assigned an UPPERCASE alphanumeric Unit ID of eight
characters only while the TrimTrac 1.5 is connected to a Provisioning Module
(available separately). The default Unit ID is set to 00000000.
The TrimTrac 1.5 checks all incoming messages for a Unit ID and all incoming
message must include a Unit ID. If the Unit ID included in a message sent to
TrimTrac 1.5 does not match the Unit ID configured in the TrimTrac 1.5, then the
message is ignored.
Checksum
The checksum field is always required and provides for a two-digit hexadecimal
checksum value, which is computed by XOR’ing all characters from the
beginning of the message up to and including the * character. See Table 45,
Sample XOR Checksum Source Code. The checksum is always the last element
of the message before the end-of-message delimiter.