MotionSuite™ MP940 Machine Controller Hardware Manual Section 5: Communications
34
Indicators Problem Probable Cause Possible Solution
MS green lit
NS green lit
(cont.)
MSG - SND
function
terminated due to
error (during
DeviceNet
communications)
Parameter
setting error
(1) Verify the MSG - SND function parameter settings are
correct.
•Data address
•Data size
MS green lit
NS green
flashing
EM allocations
not made
(1) Set the EM allocation under “I/O Allocations.”
MS green lit
NS red lit
I/O
communications
error
Remove the cause of the I/O error.
MS green lit
NS green lit
MSG - SND
function remains
BUSY and does
not end
MSG - SND
function
parameter
setting error
(1) Verify the MSG - SND function parameter settings are
correct.
•Remote station #
Excessive traffic
on DeviceNet
(Cannot send
Explicit request
message)
(1) Set longer communications cycle time.
(2) For multi-master configuration, increase the
communications cycle time for the other master.
Troubleshooting the Master
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