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Nemo SX - Multifunction control
module
Cat. N°: SXM0C1
6. SYSTEM ARCHITECTURES
(continued)
6.2 Supervised system (Computer Supervisory System)
(continued)
6.2.1 Supervised system with local addressing (through the track wheel)
(continued)
Consequences of the local addressing mode
(through the track wheel)
:
. Each device of the system must be addressed.
. Addresses available: from 1 to 9
. Address 0 not permitted
It is possible to assign to several devices the same address with the purpose of grouping different functions, because they are related to the
same electrical circuit. For example it is possible to assign the same address to a multifunction signalling module (cat. no SXMC02), a
multifunction control module (cat. no SXM0C1), a measuring module, and so on. In this way on the Nemo SX display or in a supervision system
the grouped function will be displayed as a unique “device” with all grouped functions.
[
Refer to the scheme hereunder]
Note: In this configuration the Modbus address of an Nemo SX module device or group of modules (several functions) is obtained considering
the address of the interface Modbus/Nemo SX Interface as tenth and the address of a device or group of function as unit (e.g. Interface address
1 = 10 and device address = 5
Modbus address = 15)
Consequences for the system architecture:
-
for 1 IP/Modbus gateway (cat. no SXIIP):
o
up to 81 Modbus address
o
mandatory limit of max. 9 Modbus/Nemo SX interfaces or max. 1000 m of Modbus cable (cable Belden 9842, Belden 3106A or
equivalent).
-
for 1 Modbus/Nemo SX Interface (cat. no SXI485):
o
up to 30 Nemo SX modules (ex. 30 devices grouped per functions with addresses from1 to 9)
Note: with local addressing, the Modbus/Nemo SX interface, does the automatic detection of modules (characteristics, functions,
configuration...)
Technical data sheet: IDP000170EN_02
Updated: 14/02/2018
Created: 31/08/2017
Cat. no SXIIP
