Omron NX-series User Manual page 41

Descriptions of Status of NX Units Managed by the NX Bus Func-
tion Module as the NX Bus Master
Name
NX Unit Registration Status
NX Unit Message Enabled Sta-
tus
NX Unit I/O Data Active Status
NX-series Communication Control Unit Built-in Function User's Manual (Z396)
3 Management Functions for NX Units
This status tells whether the NX Units are registered in the Unit configuration.
Each bit has the following meaning.
TRUE: Registered
FALSE: Not registered
If the Unit configuration information is registered, the status is TRUE for each
Unit that is registered.
If the Unit configuration information was automatically created (with only the
actual Unit configuration information and no registered information), the sta-
tus is FALSE for all Units.
The status is TRUE for NX Units that are set as unmounted Units.
Each bit is updated at the following times.
•
If the Unit Configuration Information Is Registered:
The status changes to TRUE when the system is started.
The status changes to FALSE when the configuration information is
cleared.
•
If the Unit Configuration Information Is Automatically Created:
The status changes to TRUE when the configuration information is con-
firmed.
The status is always FALSE if the Unit configuration information is auto-
matically created.
This status tells whether the NX Units can process message communica-
tions.
Each bit has the following meaning.
TRUE: Message communications possible.
FALSE: Message communications not possible.
The status says that message communications are enabled for NX Units that
meet the following conditions.
•
The comparison shows no differences (only if the Unit configuration infor-
mation is registered).
•
The NX Unit does not have a WDT error.
The status is FALSE for NX Units that are set as unmounted Units.
Each bit is updated when the message communications status changes on
the corresponding NX Unit.
This status tells whether the NX Units can process I/O data communications.
Each bit has the following meaning.
TRUE: The I/O data in the NX Unit can be used for control.
FALSE: The I/O data in the NX Unit cannot be used for control.
The status is FALSE for NX Units that are set as unmounted Units.
Each bit is updated when the operating status changes on the corresponding
NX Unit.
If both of NX Unit Registration Status and NX Unit I/O Data Active Status are
TRUE, the target NX Units operate normally.
Description
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