Laser beta lasermike LS8000-3 - Manual (Page 176)

LaserSpeed 8000-3 Instruction Handbook
Ethernet Communication
Part No. 93463 / Drawing No. 0921-01561 Page 176 of 221 Revision A (Sep 2007)
UDP Discovery Beacon
The LS8000-3 supports a protocol that allows a host to find all LaserSpeed
gauges connected to a network. This protocol is initiated by a host sending a
UDP broadcast message, referred to as a Discovery Beacon. Each
LaserSpeed that receives the message will respond to it.
The discovery beacon has a configurable format that specifies what
information should be in the response message. The message is composed
of a list of identifiers, each one specifying a value that is being requested. The
LaserSpeed's response consists of a list of values, each one giving the value
of a requested parameter. The values listed in the response are in the same
order as the identifiers are listed in the discovery beacon. If an identifier in the
discovery beacon is not recognized, then it is omitted from the response. If an
identifier is sent out in the beacon, but a gauge omits it from its response, it
should be assumed that the gauge does not recognize the identifier.
Discovery Beacon Format
Protocol: UDP Broadcast
Host Port: Any
Destination Port: 10003
Byte Description
0
The length of the protocol version. This byte should
always be 12.
1-12
The protocol version string. This string should be
set to "blmfind_v1.0"
13 n specifies the number of identifiers in the list.
14 to
14+n
Each byte specifies the identifier of a value that
should be returned in the beacon response.