Yaskawa MP940 Hardware Manual - Manual (Page 37)

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