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NE1A-series Controller Operating Modes Section 10-1
10-1-4 Operating Mode Setting at Startup
The user can select the NE1A-series Controller’s operating mode from the fol-
lowing two modes at startup, after the normal completion of configuration.
IMPORTANT When the power supply is interrupted in IDLE Mode, the NE1A-series Control-
ler will not start in RUN Mode at the next startup even though Automatic Exe-
cution Mode is set and the configuration is locked. Make sure to turn OFF the
power supply in RUN Mode.
10-1-5 Operating Mode Changes
NE1A-series Controller operating modes can be changed using the Network
Configurator.
A password may be required to change the operating mode.
• IDLE Mode → RUN Mode
• RUN Mode → IDLE Mode
10-1-6 Program Execution Delay
When the NE1A-series Controller starts safety I/O communications in RUN
Mode, it must establish safety connections in order with each safety slave that
has been registered. Safety I/O communications are thus delay by a few sec-
onds or tens of seconds over program execution. During this time, safety I/O
data will be OFF, possibly causing logic errors if safety I/O data is used for
dual-channel complementary inputs to function blocks or the EDM feedback
input to an EDM function block.
With unit version 2.0 or later (including Controllers that support EtherNet/IP),
program execution can be delayed to help prevent logic errors. If the program
execution delay, program execution will be delayed until safety I/O communi-
cations have started.
Operating mode
on startup
Description
Normal Mode The NE1A-series Controller starts in IDLE Mode after configuration has been
completed. To switch to RUN Mode, use the Network Configurator to change the
mode at every startup.
Automatic
Execution Mode
When this mode is selected and the following operations are performed, the
NE1A-series Controller starts up in RUN Mode thereafter.
• Configuration lock
• Power supply interruptions after switching to RUN Mode.
IDLE RUNCONFIGURING
Configuring
Download completed normally.
Mode change
Mode change
Configuring
Unit Ver. 2.0 or Later
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