Laser LS8000-3 manual UDP Discovery Beacon, Discovery Beacon Format, Byte Description

LaserSpeed 8000-3 Instruction Handbook

Ethernet Communication

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

0The 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	Each byte specifies the identifier of a value that
14+n	should be returned in the beacon response.

Part No. 93463 / Drawing No. 0921-01561 Page 176 of 221 Revision A (Sep 2007)