Omron NX701-17 Series User Manual page 196

9 Troubleshooting
Attached Error Details: 0000 hex: Too many slaves, 0001 hex: Incorrect connections, such as a ring connection
information
Precautions/ Operation
Remarks
Master:
• The following applies if fail-soft operation is set to Fail-soft, the event was detected when the power supply was
turned ON or the Controller was reset, and the error details in the attached information is 0000 hex: The maximum
number of slaves from the beginning will enter the Operational state and continue to operate. The slaves past the
maximum number of slaves will remain in Init state and communications will stop.
• The following applies if fail-soft operation is set to Stop, the event was detected when the power supply was turned
ON or the Controller was reset, and the error details in the attached information is 0000 hex: The maximum number
of slaves from the beginning will enter the Pre-operational state and only message communications will continue.
The slaves past the maximum number of slaves will remain in Init state and communications will stop.
• The following applies if the event was detected when the power supply was turned ON or the Controller was reset,
and the error details in the attached information is 0001 hex: All slaves will remain in the Init state and communica-
tions will stop.
• The following applies if fail-soft operation is set to Fail-soft, the event was detected during communications, and the
error details in the attached information is 0000 hex: The maximum number of slaves from the beginning will enter
the Operational state and continue to operate. The slaves past the maximum number of slaves will remain in Init
state and communications will stop.
• The following applies if fail-soft operation is set to Stop, the event was detected during communications, and the error
details in the attached information is 0000 hex: The maximum number of slaves from the beginning will enter the Pre-
operational state and communications will stop. The slaves past the maximum number of slaves will remain in Init
state and communications will stop.
• The following applies if fail-soft operation is set to Fail-soft, the event was detected during communications, and the
error details in the attached information is 0001 hex: The slaves that are normal continue to operate. If you are using
distributed clocks to synchronize the slaves, a Synchronization Error may occur between the slaves.
Slave:
• No error occurred.
• The following applies if fail-soft operation is set to Fail-soft, the event was detected when the power supply was
turned ON or the Controller was reset, and the error details in the attached information is 0000 hex: The maximum
number of slaves from the beginning will enter the Operational state, it will be possible to set parameters, and pro-
cess data communications will continue. The slaves past the maximum number of slaves will remain in the Init state
and it will not be possible to set parameters or perform process data communications for them.
• The following applies if fail-soft operation is set to Stop, the event was detected when the power supply was turned
ON or the Controller was reset, and the error details in the attached information is 0000 hex: The maximum number
of slaves from the beginning will enter the Pre-operational state, it will be possible to set parameters, but process
data communications will not be possible. The slaves past the maximum number of slaves will remain in the Init state
and it will not be possible to set parameters or perform process data communications for them.
• The following applies if the event was detected when the power supply was turned ON or the Controller was reset,
and the error details in the attached information is 0001 hex: All slaves will remain in the Init state and it will not be
possible to set parameters or perform process data communications.
• The following applies if fail-soft operation is set to Fail-soft, the event was detected during communications, and the
error details in the attached information is 0000 hex: The slaves before the node where the error occurred will enter
the Operational state, it will be possible to set parameters, and process data communications will continue. For the
slave where the error occurred and all slaves after it, it will not be possible to set parameters or perform process data
communications.
• The following applies if fail-soft operation is set to Stop, the event was detected during communications, and the error
details in the attached information is 0000 hex: It will be possible to set parameters but it will not be possible to per-
form process data communications for all slaves in the Pre-operational state. It will not be possible to set parameters
or perform process data communications for all slaves in the Init state.
• The following applies if fail-soft operation is set to Fail-soft, the event was detected during communications, and the
error details in the attached information is 0001 hex: Process data communications will be possible for all slaves that
are operating normally. If you are using distributed clocks to synchronize the slaves and a Synchronization Error is
detected, only input refreshing is enabled. It will be possible to set parameters.
There are restrictions on the number of slave node addresses, and not on the number of slaves per se. This is because
there are slaves, such as Junction Slaves, that use more than one node. Also, if the maximum number of slaves are
connected and an attempt is made to make a ring connection, a Too Many Slaves error (0000 hex) occurs.
9-26
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