System Test
53
Building Technologies
048_DMS_NK8237_ICC_MP4.40_A6V10316241_a_en.doc
Fire Safety & Security Products
06.2011
8 System
Test
General checks on NK8237
The power supply, vital functions, and diagnostic state of NK8237 can be checked
on the front panel. Refer to 4.1 at p.12.
On the Modbus interface, the
LifeCheck
register provides a incremental counting
as long as the NK8237 communication with the fire system and with the Modbus
station works properly.
For more advanced diagnostics, see 9.1 at p. 54.
Checking the Modbus connection
The serial line state can be monitored from the LEDs of the NK8237 front panel.
A complete check can be done from the Modbus unit.
Checking the fire system
If the Modbus communication works, detailed information is provided for each fire
control unit. A complete check of the fire detection points is required before hand-
ing over the system.
For a complete documentation of the fire point mapping, refer to the
NK8237 Mod-
bus Interface Specifications
(document no. A6V10316242).
Please be aware of the potential consequence of a configuration mismatch be-
tween the fire system and the Modbus master station that deals with the safety
alarm presentation and treatment. Such a mismatch can actually result in a fire
alarm being missed.
Whenever a configuration change occurs in the fire system and/or in the NK8237
gateway, make sure to thoroughly and consistently import and set up a corre-
sponding configuration into the Modbus head-end system.
Note that the configuration inconsistency between the fire system and the
NK8237 is detected and reported in the Modbus map (refer to the
NK8237 Points
register documented in the
NK8237 Modbus Interface Specifications
.)
