You want all of your DeltaV Smart Switches to have consistent behavior. To assist that goal, DeltaV software includes two control module classes from which switch modules are created:
The switch module classes hold common switch setup information and hardware alarm behavior configuration for Smart Switches. You can modify parameter settings of the classes to tailor them to your needs.
The Network Device Command Center detects which DeltaV ACN or DeltaV Remote network a switch is on and creates a switch module instance named the same as the switch from the appropriate module class when commissioning a switch.
During commissioning of a switch, Network Device Command Center (NDCC) only detects the primary and secondary network for the DeltaV ACN and DeltaV Remote networks. For all other networks, it uses the SWITCH_STDCFG_$X module.
Classes are provided for both primary and secondary networks because you may need to have different values for the following parameters:
It is recommended that you set these addresses in the switch module class or make the class configurable at the instance.
NDCC only detects the primary and secondary network for the DeltaV ACN and DeltaV Remote networks. For all other networks, it uses the SWITCH_STDCFG_$X module.
Therefore, if you need to have any parameters set for these other networks, you must set the module class to allow for the instance to be configured, and you must set the correct IP addresses for things such as the SYSLOG or NTP servers for those networks (that is, the subnets must be appropriate for the switch's network).
It is recommended that you do not add any other parameters or logic in these module classes. Any additions to the classes may not be preserved when upgrading to future versions of DeltaV software.
The control module classes are in the configuration library at: DeltaV _System/Library/Advanced Definitions/Control Module Classes/Switches. If the module classes have been deleted or renamed, you cannot commission switches.
It is not recommended to assign the smart switch module to a member of an Application Station pair because the standby Application Station is not communicating with the switch, it is getting all updates from the active Application Station. The smart switch module (in the active Application Station) is communicating to the switch through Network Device Command Center SNMP processes that are not redundant.