Rockwell Automation 1757-FFLDC4 FOUNDATION Fieldbus System User Manual - Manual (Page 125)

Rockwell Automation Publication 1757-UM012A-EN-P - July 2011 125
Chapter
9
Diagnostic Web Pages
Introduction This chapter describes the diagnostic web pages of the linking device.
H1 Live List The H1 Live List page is a list of devices on the linking device’s H1 ports. Each
port on the linking device is listed as a separate network and the linking device
appears as a device on each network list.
A device remains in this Live List as long as it responds properly to the token sent
from the Link Active Scheduler (LAS). The LAS will remove a device from the
Live List if the device does not use the token or immediately return it to the LAS
after three successive tries. The LAS periodically sends messages to the addresses
of devices not in the Live List. If a device returns a message, the LAS adds the
device to the Live List.
Topic Page
H1 Live List 125
VCR Pages 127
Ethernet Pages 129
Diagnostic Log Files 132