MotionSuite™ MP940 Machine Controller Hardware Manual
Section 5: Communications
37
Indicators
Problem
Probable Cause
Possible Solution
MS green lit
NS green lit
Communica-
tions are
occurring but
the receive
data is not
being
refreshed
DeviceNet
master is in
idle status
Remove the cause of the idle status of the DeviceNet
master.
MS green lit
NS green lit
Communica-
tions are
occurring but
the receive
data refresh is
delayed
Excessive traf-
fic on
DeviceNet.
The communi-
cations cycle
time setting is
too low for the
I/O response
receive time.
The process-
ing load for
data exchange
with the mas-
ter is too large.
(1) Increase communications cycle time for the
DeviceNet master.
(2) Increase the baud rate.
(3) Increase the CPU scan time for the I/O allocation
SYNC setting.
Slave
Troubleshooting Slaves
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