Siemens FS20 - Guidelines for Extended Networking

Planning the networking of the stations
Guidelines
8
130 | 242
Building Technologies
008843_v_en_
--
Fire Safety
2015
-
12
-
15
Parameters FCnet/SAFEDLINK FCnet/Ethernet (sub-net)
Maximum number of repeaters between two
stations
1 –
Max. number of repeaters 32 –
Max. length of line between interface module and
stations
100 m –
Maximum number of interface modules between
two stations
1 pair –
Max. number of interface modules 32 pairs –
Max. length of line of all electrical connections
(copper cables) in the optical network
1000 m –
Maximum number of fiber optic cable network
modules between two stations
1 –
Maximum number of fiber optic cable network
modules
32 –
Table 32: Parameters of the SAFEDLINK networking types
1
Even when using an external LWL network module (SM/MM), the maximum
length of the electric FCnet between the stations must not be longer than 1000 m.
8.16.3 Guidelines for extended networking
Please observe the following guidelines for ↑ extended networking via FCnet/LAN
with an Ethernet switch:
● Ethernet switch (MM) FN2008-A1 may be used in stations ≥MP3.
● Ethernet switch (modular) FN2012-A1 may only be used in stations ≥MP6.
● Mixed operation with both Ethernet switches is not permitted.
● Sub-nets with more than 512 fire detectors must be coupled to the FCnet/LAN
redundantly using two Ethernet switches (EN 54).
● Sub-nets with superordinate functions (remote transmissions, alarming
devices, master operation) must be coupled to the FCnet/LAN redundantly
using two Ethernet switches (various country-specific 'Codes of Practice').
● Sub-nets monitoring areas larger than 12000 m
2
must be coupled to the
FCnet/LAN redundantly using two Ethernet switches (VDE 0833-2).
● Redundant lines should be routed on separate sections to rule out the
possibility of damage by the same event.
The following table shows the most important parameters.
Parameters FCnet/LAN
Max. length of line between the ↑ stations 3000 m
Max. number of stations in entire network (all sub-networks) 64
Max. number of stations per ↑ SAFEDLINK sub-net 16
Max. number of SAFEDLINK sub-networks 14
Max. number of Ethernet sub-networks per SAFEDLINK sub-network Not admissible
FCnet/LAN cabling:
Multimode fiber optic cable (ST connection)
● 50/125 µm
● 62.5/125 µm
Table 33: Networking parameters