Bradley Smoker PLC-5 Linear scan failed, Started linear scan below for more information, Responds

9-12Communicating with Devices on a DH+ Link

Status Field	Word(s)	Description
Linear scan failed	16	Number of times the station solicited every station number without getting a response. See
		started linear scan below for more information.
Token retry	13	Number of times the station had to re-transmit a token pass. The station re-transmits a token
		pass if it detects that the station it passed the token to did not receive the token. Noise can
		cause this to occur.
Solicit rotations	34	Number of times a complete solicit successor of all stations not on the link is completed.
		A solicit successor occurs during a token pass around the link. Here a station that is currently not
		on the link is solicited to see if it has been added to the link. During each token pass, a different
		station number is solicited; solicitation occurs sequentially. A station can only join the link when
		it is solicited into it.
Started linear scan	15	Number of times the station has attempted to pass the token to everyone in its active node table
		and no one has responded.
		The station will then start a linear scan where it solicits every station number until a station
		responds.
New successor	12	Number of times the station found a new successor for the token.
		A new successor occurs when the station detects that a new station with a station number
		between its and a the station it was passing the token to was added to the link. The station now
		must past the token to the newly added station.
Token failed	14	Number of times station could not pass token to its listed successor. This usually occurs due to:
		the station being removed from the network
		noise or cabling problems

Estimating DH+ Link Performance

Many factors affect the performance of your DH+ link, including:

•nodes

•size and number of messages

•message destination

•internal processing time

Publication 1785-UM012D-EN-P - July 2005