Endress+Hauser iTEMP TMT85, Руководство по эксплуатации

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iTEMP TMT85 System integration
Hauser 27
7 System integration
7.1 FOUNDATION Fieldbus TM technology
The FOUNDATION Fieldbus TM (FF) is a purely digital, serial communication system that
connects fieldbus devices (sensors, actuators), automation and process control systems
with each other. As a local communications network (LAN) for field devices, the FF was
primarily designed for the requirements of process engineering. The FF is therefore the
basic network in the overall hierarchy of a communication system. For configuration
information, please refer to Operating Instructions BA 013S/ 04/en “FOUNDATION
Fieldbus Overview: Installation and Commissioning Guidelines”.
7.1.1 System architecture
The graphic below shows an example of a FOUNDATION Fieldbus TM network with the
associated components.
0 - 10 bar 0 - 10 bar
Visualisation and monitoring
e. g. P View, FieldCare
and diagnostic so!ware
High speed Ethernet
(HSE) 100 Mbit/s
32 devices per segment
Field controller
linking
device
E HAUSER E HAUSER
linking
device linking
device
H1
31.25 kbit/s
H1 IEC 61158-2 H1 FISCO
Measuring point with
installed TMT85
Measuring point with
installed TMT85
A0042920-EN
 14
System integration via FOUNDATION Fieldbus TM
The following system connection options are possible:
• A linking device can be used to connect to higher-level fieldbus protocols (e.g. to the
High Speed Ethernet - HSE).
• A H1 connecting card is required for direct connection to a process control system.
• System inputs are directly available for H1 (HSE).
The system architecture of the FOUNDATION Fieldbus TM can be divided into two
subnetworks:
H1 bus system:
In the field, fieldbus devices are connected only via the slower H1 bus system that is
specified following IEC 61158-2. The H1 bus system enables simultaneous power supply
to the field devices and data transfer on the two-wire cable.
The following points describe some important characteristics of the H1 bus system: