Siemens NK8237 MP4.81-02 Installation, Configuration And Commissioning page 14

System limits
3
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Building Technologies
CPS Fire Safety
IEC 60870-5-104 hosts and system limits per each connected NK8237 unit
IEC hosts Detectors and units per NK8237
1-4 IEC hosts
Max. 10,000 detectors.
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16 FS20/FS720 units
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Interaction capabilities
Unlike the other NK8000 units, the NK8237 does not support interactions.
I/O modules locally connected via I2C
Unlike the other NK8000 units, the NK8237 does not support DF8000 I/O modules.
A6V10854379_a_en
25.01.2019