
4.BUILDING A SAFE SYSTEM OPERATION B-62924EN/04
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Table 4-1 Processing Related to Building a Safe System (2/2)
Processing performed by the FANUC master function
Communication state
Diagnose data for the
relevant slave station
DI/DO data exchanged with
the relevant slave station
Processing to be performed
by the user on the FANUC
master station
After system operation
starts, the power to the
relevant slave station is
turned off or the slave
station is disconnected.
Station_Non_Existent : ON
(STATION STATUS 1.0)
DI data:
The DI signals from the
relevant slave station are
cleared to 0.
DO data:
The DO signals in the PMC
area are not output to the
relevant slave station.
When stopping of the system
is determined to be necessary
from the establishment status
of communication with other
slave stations, set the system
execution signal to be sent to
the slave stations to 0 to notify
them of the stop of system
operation.
After system operation
starts, communication with
the relevant slave station is
established, but the power
to another slave station is
off or the station is
disconnected.
Station_Non_Existent : OFF
(STATION STATUS 1.0)
and
Station_Not_Ready : OFF
(STATION STATUS 1.1)
DI data:
The DI signals from the
relevant slave station are
input to the PMC area.
DO data:
The DO signals in the PMC
area are output to the
relevant slave station.
When stopping of the system
is determined to be necessary
from the establishment status
of communication with other
slave stations, set the system
execution signal to be sent to
the slave stations to 0 to notify
them of the stop of system
operation.
After system operation
starts, the relevant slave
station sends back an
invalid response (such as a
damaged packet).
Invalid_Slave_Response : ON
(STATION STATUS 1.5)
DI data:
The DI signals from the
relevant slave station are
cleared to 0.
DO data:
The DO signals in the PMC
area are not output to the
relevant slave station.
When stopping of the system
is determined to be necessary
from the establishment status
of communication with other
slave stations, set the system
execution signal to be sent to
the slave stations to 0 to notify
them of the stop of system
operation.
After system operation
starts, communication with
the relevant slave station is
established, but another
slave station sends back
an invalid response (such
as a damaged packet).
Station_Non_Existent : OFF
(STATION STATUS 1.0)
and
Station_Not_Ready : OFF
(STATION STATUS 1.1)
DI data:
The DI signals from the
relevant slave station are
input to the PMC area.
DO data:
The DO signals in the PMC
area are output to the
relevant slave station.
When stopping of the system
is determined to be necessary
from the establishment status
of communication with other
slave stations, set the system
execution signal to be sent to
the slave stations to 0 to notify
them of the stop of system
operation.