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Remote I/O Allocations Section 4-3
4-3-2 Remote I/O Area Attributes
Remote I/O Area Attributes
The NE1A-series Controller’s remote I/O area has the following attributes.
All values in the safety remote I/O area will be cleared if the operating mode is
changed. If a communications error occurs, all data for the connection for
which the error occurred will be cleared.
Note Refer to Section 8 Operating Modes and Power Supply Interruptions for
details on each operating mode.
Slave I/O Area Hold Setting
Mode change Communications
error
Power ON
RUN
to Idle
RUN or Idle to
Configuration
Safety remote I/O
area (DeviceNet
Safety)
Cleared
(safety state)
Cleared
(safety state)
Cleared for con-
nection (safety
state)
Cleared
(safety state)
Standard remote
I/O area
(DeviceNet)
Depends on
Slave I/O area
hold setting.
Cleared Depends on Slave
I/O area hold set-
ting.
Cleared
Setting Description Default Validity
Clear The slave output area (inputs to a user application program) is
cleared when a communications (connection) error occurs.
The slave input area (outputs to a Standard Master) is cleared
when the operating mode is changed to IDLE Mode.
Clear When power
supply is cycled
Hold The last data in the slave output area (inputs to a user application
program) is held when a communications (connection) error
occurs.
The last data in the slave input area (outputs to a Standard
Master) is held when the operating mode is changed to IDLE
Mode.
Values are cleared, however, when a critical error or abort occurs
or when the power supply is turned ON again.
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