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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 10 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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