Rockwell Automation 1747-SCNR SLC ControlNet Scanner Module Installation Instructions - Manual (Page 16)

16 SLC ControlNet Scanner Module
Publication 1747-IN059C-EN-P - September 2001
Sequence OK
Indicator
Alpanumeric
Display Module Status
Word (M1 file) Description Probable
Cause Recommended
Action
Run time Flashing
Green I/O
I/O
I/O
I/O
0x22
0x23
0x24
0x25
Connections
are configured
but no
connections
are
established.
Connections
are configured
but only
25% are
successfully
established.
50%
75%
View the
Connection
Status screen
in RSNetWorx
for ControlNet
to see why
the
connections
are not
established. Check to see if
the 1747-SCNR
and the remote
devices are
correctly
connected to
the ControlNet
network.
Module
bandwidth is
exceeded. Reduce the
number of
scheduled
connections by:
- using a
discrete rack
connection
instead of
multiple
discrete module
connections
- combining
multiple I/O
racks into a
single I/O rack
- combining
multiple
peer-to-peer
messages into
one message.
Increase your
Network Update
Time and/or
increase the
Requested
Packet Intervals
for scheduled
data transfers.
Increase your
SLC 500 ladder
program scan
by adding more
logic.