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Configuration
7
Customising the IEC Interface
59
Building Technologies
A6V10854379_a_en
CPS Fire Safety
30.11.2017
9.8
Customising the IEC Interface
In the IEC Master node, a number of configuration settings can be customised
relevant to the general NK8237 gateway parameters, as well as to the address of
IEC devices and data tables.
Note: The NK8237 handles a number of data tables to implement the IEC
communication at application level. For more details about these tables, see the
NK8237 IEC 60870-5-104 Interface Specifications guide (document no.
A6V10741020).
9.8.1
General gateway parameters
The general parameters include:
Command level
This parameter defines the command access level allowed for the IEC master
station. The option list includes:
– No command: the IEC master station cannot send any command to the fire
system.
– Ack only: the IEC master station can only send the Acknowledgement
command to the fire system.
– Ack, Reset: the IEC master station can only send the Acknowledgement
and Reset commands to the fire system.
– Ack, Reset, Basic command: the IEC master station can send the entire
set of defined commands to the fire system.
NOTICE! The Basic commands (day/night, include/exclude) are not fully
compliant with the IEC standard, and the use of these commands must be
first agreed with the customer.
Time synchronization
This parameter is important for setting the appropriate time stamp on the
exchanged data messages. The NK8237 can handle the time synchronization
in one of the following ways.