Nk823X: Modbus Gateway Configuration For Fs20/Fs720/Stt20 - Siemens DMS8000 Application & Planning

Automation level configurations

3.2.14 NK823x: Modbus Gateway configuration for FS20/FS720/STT20

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Building Technologies
CPS Fire Safety
Fig. 34 NK823x: Modbus Gateway configuration for FS20/FS720/STT20 example
System architecture
The NK823x Modbus Gateway functionality allows for integration of FS20/FS720 and
STT20 fire detection systems into 3rd party Modbus head-end/automation systems on
LAN or over a serial line. It provides for bi-directional Modbus RTU and TCP/IP con-
nectivity to Sinteso or Cerberus PRO and STT20 fire detection systems.
Communication/connection
The FS20/FS720/STT20 is connected via Ethernet and BACnet/IP protocol to the
NK823x.
On the upstream side the NK823x is connected to MM8000 and/or MK8000 via
Ethernet and BACnet/IP or CMSDL/IP protocol. The 3
nected either via Ethernet and TCP/IP Modbus protocol or via RS-232/RS-485 and
Modbus RTU protocol to the NK823x.
In addition, NK823x can be configured as a BACnet Foreign Device or act as BBMD
(BACnet Broadcast Management Device).
NK823x has an integrated firewall and router supporting the dynamic routing protocol
Open Shortest Path First (OSPF).
The built in NK823x Web Server can be used for monitoring and diagnostic purposes.
® For supported downstream configurations/protocols of NK823x please refer to the
NK8232/NK8235/NK8237 Ethernet Port Datasheets.
To learn how to obtain these documents, see the Documentation resource informa-
tion section on page 5.
049_DMS_DMS8000_Application_Specification_Planning_MP4.81_A6V10063710_a_en.doc
rd
party Modbus device is con-
09.2016