Installation manual

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4.4
X-Way and the OSI model
Modicon TSX Micro
automation platform 0
X-way communication
The communication architecture of the programmable TSX Micro/Premium PLCs,
like that of TSX 17 or TSX model 40 PLCs, is compliant with the OSI model
.
The physical layer enables the physical transmission of data signals between
2 systems via a medium. In order for a network to operate correctly, and to ensure
full security of personnel in compliance with IEC 1131 2, it is necessary to implement
the wiring recommendations described in the reference manual TSX DR NET F
“X-Way communication” (or in the TSX CD DMTE 13E CD-ROM “Technical
documentation”).
The application layer concerns application programs, data exchange and
cooperation conventions.
This layer provides the following services:
b Industrial Uni-TE message, available on TSX Micro/Premium/TSX PLCs.
b Distributed COM database available on TSX Micro/Premium/TSX PLCs, or
Shared Table service available on TSX Micro/Premium PLCs.
b Periodical data exchange on Fipio bus, see page 4/50.
b Application-to-application communication.
b Telegram.
(1) Ethway not available on TSX Micro PLC.
(2) 1 K bytes with requests executed as a background task.
(3) 128 bytes on TSX Micro/Premium/TSX model 40 terminal port, 32 bytes on
TSX 17 20/47 20/25.
(4) COM service not available with Ethernet TCP/IP.
The Uni-TE protocol is the industrial message handling system supported by the
X-Way communication architecture. It operates on the question/answer or
request/confirmation principle. A device which supports the Uni-TE protocol can be a:
b Client: this device initiates communication. It asks a question (reads), transmits data
(writes) or sends an instruction (Run, Stop, etc.).
b Server: this device executes the service requested by the client and sends a
confirmation after execution.
X-Way and the OSI model
Telegram
Common words/shared table
Application-to-application communications
Uni-TE
X-Way addressing system
Uni-Telway
RS 485
19.2 Kbps
Uni-Telway
WorldFip
WorldFip
1 Mbps
Fipio/Fipway
ISO 8802 3
Ethernet
ISO 8802 3
10 Mbps
Ethway
Uni-TE
Modbus (1)
TCP
IP
ISO 8802 3
Ethernet
ISO 8802 3
10/100 Mbps
Ethernet TCP
7 Application
6 Presentation
5 Session
4 Transport
3Network
2Link
1Physical
Size of requests Ethway, Ethernet
TCP/IP (1)
Fipway Fipio Uni-Telway
Uni-TE service 256 bytes (2) 128 bytes 128 bytes 240 bytes (3)
COM service 256 word
database (4)
128 word
database
––
Application-to-
application
256 bytes 128 bytes 128 bytes 240 bytes (3)
Telegram –16 bytes––
Uni-TE services
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: [phone] ● www.stevenengineering.com
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