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| SST Automation gateway was successfully used in
Subway System
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Keywords:
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| Keywords: Subway Transport,
EtherNet/IP, PROFIBUS DP, GT200-DP-EI, AB PLC,
Siemens PLC S7-300,
Industrial Ethernet to PROFIBUS DP
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I. Introduction
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| Subways operate in extremely special
environments, so high reliability and efficiency in subway communication system are important. The
industrial Ethernet to PROFIBUS DP gateway GT200-DP-EI developed by SST
Automation was applied to the metro line in China, due to its practical relevance to the specific
requirements of subway communications. |
| II.
Simple gateway communication diagram
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| Industrial Ethernet to PROFIBUS DP
gateway-related communication simple block diagram
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As shown in Figure 1, the gateway GT200-DP-EI acts as a slave on
the EtherNet/IP network and as a slave on the PROFIBUS DP network, enabling AB PLC to get data and
monitor Siemens PLC.
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| III.
Industrial Ethernet to PROFIBUS DP gateway system functions
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| Subway staff exchange much information in
the operation and management of the subway transportation system. The information includes various
telephone, radio and television monitoring, standard time signals, automatic monitoring information
of power transmission, automatic fire alarm information, power and environmental monitoring
information, and a variety of communication network management information, office automation and
other operations management information. The gateway GT200-DP-EI is mainly used in the
environment monitoring information system of the subway.
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| The environmental monitoring
information system consists of the following components:
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1. Host computer: monitoring
2. AB Logix5000
PLC (Rockwell): EtherNet/IP master, collect various parameters of the field control device (Siemens
PLC) and send the control commands of the host computer
3. SST Automation GT200-DP-EI: bridge between
different field bus communication devices to enable data communication
4. Siemens S7-300 PLC:
PROFIBUS DP master, collect all kinds of working parameters of Field air conditioning fan
5. Field air conditioning system: provide air conditioning fan of all kinds of working parameters
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| IV.
Environmental monitoring information system diagram
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| The gateway GT200-DP-EI establishes the
communication between the field control device and the office network monitoring device. The
Ethernet (EtherNet /IP) side of the GT200-DP-EI connects the AB PLC
and the other end (PROFIBUS DP side) connects the Siemens S7-300 PLC. In order to achieve the
purpose of monitoring the control information system, the main function of the GT200-DP-EI is to upload the
air-conditioning equipment information collected by the on-site control system to the monitoring
layer, mainly to monitor the frequency and equipment status of the fans (air conditioning fans) and
receive control commands under the host computer.
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California Office:
3200 E Guasti Rd, STE 100, Ontario, CA 91761
Tel: 844-606-2886 (US & Canada)
+1 (626) 899-6290
(International)
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Asian Pacific Office:
6E, Bld 3, 518# Xinzhuan Rd, Songjiang District,
Shanghai 201612,
China
Tel: +86-18917828842
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