Siemens NK8237 MP4.40 - Introduction; NK8237 system overview

Introduction
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Building Technologies 048_DMS_NK8237_ICC_MP4.40_A6V10316241_a_en.doc
Fire Safety & Security Products 06.2011
2 Introduction
This section provides a general description of the NK8237 gateway.
2.1 NK8237 system overview
The NK8237 acts as gateway between Sinteso FS20/Cerberus PRO FS720 fire
detection systems and Modbus head-end/automation systems connected via LAN
or over a serial line. It provides for bi-directional Modbus RTU and TCP/IP connec-
tivity for FS20/FS720 BACnet/IP fire detection systems.
Note that the NK8232 and NK8235 products of the same NK8000 family can also
provide the Modbus gateway function along with DMS8000 connectivity and in-
teraction functions.
2.2 Connectivity Examples
Fig. 1 Modbus TCP/IP connectivity
Fig. 2 Modbus Serial RTU connectivity