The serial essernet Interface redundant (SEI2red) connects ESSER fire alarm control panels to management systems, other essernet sub-networks or to an essernet backbone.
Up to 31 devices @ 500 kBd (SEI1, SEI2, FACP FlexES Control) can be configured in the backbone according to the known network rules, this means max. 10 SEI2 + 21 FACP’s @ 500 kBd (backbone) and up to 300 panels in ten subnets (each with max. 30 panels / and one SEI2/SEI2red – 31 essernet nodes), Total system = 321 panels (backbone and subnets)The SEI2 of the backbone must be configured as sub-control panels.Together with the up to 10 subnets, a hierarchical system is formed, as statuses can be sent from the subnet to the backbone and commands can be sent from the backbone to the subnet.Commands for primary lines (from the backbone to the subnet) must be blocked with command filters depending on the system.Statuses (messages) in the backbone which are sent to the router must also be blocked with filters.The transmission of statuses and commands from one subnet to another is not possible. The subnets are subordinate, and their information is sent to the higher level backbone. In the backbone, this information is evaluated according to the known network rules, logged and linked.
