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11
NI 9144 User Guide and Specifications
Figure 10 shows the Run Mode transition.
Figure 10. EtherCAT Modes
Double-Flash
—
—
Application
Watchdog
Timeout
Watchdog
Timeout
Slave did not
receive a
scheduled
EtherCAT
telegram
receive a
scheduled
EtherCAT
telegram
On
Operational
Inputs and Outputs
are functional
are functional
PDI (Process
Data Interface)
Watchdog
Timeout
Data Interface)
Watchdog
Timeout
Slave failed to
transfer I/O data in
scheduled time
transfer I/O data in
scheduled time
Flickering
Bootstrap
Firmware Update
Booting Error
Corrupt firmware
or hardware error
or hardware error
Table 1. RUN and ERR LED Indications (Continued)
LED
Behavior
RUN LED
ERR LED
Run Mode
Description
Error Mode
Description
Operational
INIT
Bootstrap
PRE-OP
SAFE-OP