10
|
ni.com
|
NI 9144 User Guide and Specifications
Figure 10 shows the Run Mode transition.
Figure 10.
EtherCAT Modes
Single-Flash
SAFE-OP
(Safe
Operational)
Inputs are
functional,
outputs drive
constant safe
values
Unsolicited
State Change
Backplane or
module
emergency
condition
Double-Flash
—
—
Application
Watchdog
Timeout
Slave did not
receive a
scheduled
EtherCAT
telegram
On
Operational
Inputs and
outputs are
functional
PDI (Process
Data
Interface)
Watchdog
Timeout
Slave failed to
transfer I/O
data in
scheduled
time
Flickering
Bootstrap
Firmware update
Booting Error
Corrupt
firmware or
hardware error
Table 1.
RUN and ERR LED Indications (Continued)
LED
Behavior
RUN LED
ERR LED
Run Mode
Description
Error Mode
Description
Oper
a
tion
a
l
INIT
Boot
s
tr
a
p
PRE-OP
S
AFE-OP
L
ab
VIEW
Active Mode
L
ab
VIEW
Config
u
r
a
tion
Mode