Siemens ISOLATED MULTI-DROP SG-6048-01 Manual de usuario Pagina 4

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The Metasys Integrator unit allows the following Siemens equipment
(using MODBUS communication) to become an integral part of the
Metasys and Metasys Companion Networks:
Model 9300 Power Meters
Model 9500/9600 Power Meters
Use an RS-232 to RS-485 Isolated Multi-Drop Converter (B&B
Electronics Manufacturing Company model 485OTLED recommended) to
connect to a Metasys or Companion Network via the Metasys Integrator
unit. Each of the Siemens devices listed above can be accessed by the full
complement of Metasys BAS features, including Change-of-State (COS)
monitoring, alarm notification, scheduling, trend, and totalization.
The RS-232 to RS-485 converter connects to the integrator unit through
the RS-232 port. Once connected, it is the interface between Siemens
equipment and non Siemens devices (such as the Metasys Integrator unit).
Each Metasys Integrator vendor port can connect to one converter. Each
converter can connect up to 31 Siemens devices, which are connected in a
daisy-chain configuration. Each Siemens device must be fitted with the
proper communications hardware.
Figure 3 shows Siemens and Metasys system integration, and Figure 4
shows Siemens and Metasys system Companion integration.
N2 Bus
UNT
Metasys
Integrator Unit
siemens
5
RS-485
(two wire)
9300
Power
Meter
Isolated
Multi-Drop
Converter
9600
Power
Meter
9500
Power
Meter
RS-232
Panel Unit Workstation
Note: If you use a UPM enclosure, you must install the Metasys Integrator unit
300 Series in a two high enclosure (EN-EWC25-0) rather than a one high
enclosure (EN-EWC13-0) as shown in the figures in this application note.
Figure 3: Siemens and Metasys System Integration
Using MODBUS Communication
4 Metasys Integrator—Metasys Integrator Siemens Application
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