28 FUNCTIONS
28.14 External Input/Output Forced On/Off Function
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Reflection to external outputs of the standby system
The forced on/off is reflected to output devices of the standby system regardless of the operation mode and settings.
However, for external outputs of the standby system, the reflection is as follows depending on the operation mode and the
output setting of the standby system.
*1 Since cyclic data of the network module is not sent on the standby system, forced on/off is reflected only to the modules mounted on the
main base unit. (Forced on/off is not reflected to external outputs of the remote I/O module regardless of the standby system output
setting.)
Input/output behavior in forced on/off registration
The reflection of forced on/off does not differ depending on the system or operation mode.
■Forced on/off of input devices
Forced on/off is reflected to input devices when the END processing is executed. The following table lists the behavior of the
input devices within the refresh range or the input devices specified in the tracking transfer setting.
■Forced on/off of output devices
Forced on/off is reflected to output devices when the END processing is executed. The following table lists the behavior of the
output devices within the refresh range or the output devices specified in the tracking transfer setting.
Operation mode Standby system output
setting
Reflection to output devices of
the standby system
Reflection to external outputs of
the standby system
Backup mode Disable Reflected Not reflected
Enable Reflected
*1
Separate mode Disable
Enable
Item Behavior
Input devices within the refresh range Forced on/off is reflected to the input devices after the data is refreshed from the module.
Input devices specified in the tracking
transfer setting
Forced on/off is reflected to output devices after the transferred device data is reflected to the standby system.
Item Behavior
Output devices within the refresh range After forced on/off is reflected to the output devices, data is refreshed to the module.
Output devices specified in the tracking
transfer setting
Forced on/off is reflected to the output devices on both systems after the device data transferred from the
standby system is reflected.
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