Omron NX701-17 Series User Manual page 104

5 Setting Up EtherCAT Communications with the Sysmac Studio
 Relation between Changes in the Enable/Disable Setting and I/O Operations
The I/O operations that occur for changes in the enable/disable settings of an EtherCAT slave are
given in the following table.
Change in status
Disabled slaves
after turning ON
the power supply
or transferring the
EtherCAT network
configuration infor-
mation
Slaves changed
from disabled to
enabled
Slaves changed
from enabled to
disabled
Precautions for Correct Use Precautions for Correct Use
For a slave that changed from enabled to disabled, the values of the device variables from
before the change are retained.
Use the following processing to confirm if a slave is enabled or disabled.
(1) Confirm that the slave is enabled before you access the device variables of the input
device.
_EC_DisableSlavTbl
[node_address_of_input
_device] system-defined
_EC_DisableSlavTbl
[node_address_of_input
_device] system-defined
5-22
Inputs
Input refresh values
Input refreshing is 0 or FALSE
performed but not
applied to the
device variables.
Input refreshing is Input refresh val-
performed. ues are applied.
Input refreshing is The values from
performed but not before the status of
applied to the the slave was
device variables. changed are
retained.
Device variable
variable
of input device
Device variable
of input device
variable
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (W505)
Device variable Device variable
values values
Depends on results
of user program
execution.
Depends on results
of user program exe-
cution.
Depends on results
of user program
execution.
Process A when input signal is ON
Process B when input signal is ON
Outputs
Output refresh val-
ues
Output refreshing
is not performed.
The values of the
device variables
are output.
Depends on the set-
tings of the slave
and on slave mod-
els.
With GX-series
EtherCAT Slaves,
a value is output
according to the
Error Mode Output
setting on each
slave.