Orientalmotor aSTEP AZ Series, User Manual, Page: 154 / 180

Detection of communication errors
154
6 T
roubleshooting
1 Detection of communication errors
This chapter explains functions to detect that an error occurred in PROFINET.
1-1 Communication timeout
If communication is interrupted due to disconnection of the PROFINET communication cable or other reasons, the
communication timeout is detected.
When the communication timeout is detected, the NS LED on the driver blinks in red.
When connection is established with the host controller again, the communication timeout is automatically cleared,
and the NS LED on the driver is lit in green.
If the communication timeout is detected, check the following points.
• Is the PROFINET communication cable disconnected?
• Is the power supply for the host controller is turned on?
1-2 Error of communication settings
If the communication settings of PROFINET have not been made or the stored communication setting data is
damaged, an error of communication settings is detected.
When an error of communication settings is detected, the MS LED on the driver blinks in green or red. Refer to the
table for details.
If the reset method in the table is performed and the communication settings are completed, the MS LED on the
driver is lit in green.
Description of error MS LED status How to reset
The communication settings have
not been made in the driver.
Blinking green
Make the communication settings using the configuration
tool of the host controller.
The data for the communication
settings stored in the driver was
damaged.
Blinking red
Execute either of the following, and turn on the control
power supply again. After that, make the communication
settings again using the configuration tool of the host
controller.

Initialize the communication settings using the
configuration tool of the host controller. (Only the
communication settings can be initialized.)

Execute [Reset] under the [Communication] menu of the
MEXE02 . (All parameters including the communication
settings are initialized.)