Manual

Communications Package for W INTERPRET (T3831)
30 Industrial Control Services
Troubleshooting the Guarded Peer - Link
GPL Status Information
After you use the Load, Connect and Start Network
commands of W INTERPRET to a ctivate the GPL operations in
the Regent systems, each Regent performs diagnostics on the
GPL communications. Make sure that you follow the steps
outlined in the Loading, Connecting and Starting the
Guarded Peer - Link, starting on page 21 . If you have correctly
configured and activated the Guarded Peer - Link, the
following GPL system variables will report the status of the
GPL communications.
GPLINTEMP Always on if valid GPL input templates
are loaded.
GPLOUTTEMP Always on if valid GPL output templates
are loaded.
GPLCONNECT Always on if the GPL has been Connected.
GPLMSTRSCAN Always on for a Regent with a Net Master
port in the GPL network is started.
GPLDATA xx For every configured node xx (ranging
from 01 to 31) the associated GPLDATA xx
system variable should always be on if
valid fresh data is being received from at
least one leg of the GPL network. If this
bit ever turns off for a configured node,
then there is usually a problem associated
with that node (e.g. not connected).
Th e GPL system variables contain three types of GPL fault
status information.
First, a general fault bit named GPLFLTANYBUS will turn on
if any type of GPL fault has been detected. This bit should
always be monitored because it provides a general
annunciation of any type of GPL communications error.
Second, port fault bits named GPLP x FAULT (where x is 1
through 6 for the port number) will turn on to indicate which
GPL port is not operating correctly. By monitoring these bits,