232 / 413
5/98
X-Way and the OSI model
Modicon Premium automation
platform
0
X-Way communication
X-Way and the OSI model
The communication architecture of Modicon TSX Micro/Premium PLCs, like that of
TSX 17 or TSX series 7 model 40 PLCs, is compliant with the OSI model
.
b
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/EN 61131-2, l, it is necessary to follow the instructions provided
in the manual “Grounding and Electromagnetic Compatibility of PLC Systems”
included on DVD reference
UNY USE 909CDM
.
b
The application layer
concerns application programs with their data exchange
and cooperation conventions. This layer provides the following services:
v
Uni-TE industrial message handling, available on TSX Micro/Premium and TSX 17/
TSX series 7 PLCs
v
Distributed COM database available on TSX Micro/Premium and TSX 17/TSX
series 7 PLCs, or Shared Table service available on TSX Micro/Premium PLCs
v
Periodical data exchange on Fipio bus (see page 5/104)
v
Application-to-application communication
v
Telegram
Size of requests Ethway, Ethernet
Modbus/TCP
(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
–
–
(1)
Ethway not available on TSX Micro PLC.
(2) 1
kbyte 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 and
TSX 47-20/25.
(4)
COM service not available with Ethernet TCP/IP.
Uni-TE services
The Uni-TE protocol is the industrial message handling system supported by X-Way
communication architecture. It operates on a question/answer or request/report
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
report after execution.
Telegram
Common words/shared table
Application-to-application communication
Uni-TE
X-Way addressing
Uni-Telway
RS 485
19.2
kbps
Uni-Telway
WorldFip
WorldFip
1
Mbps
Fipway/Fipio
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
6
5
4
3
2
1
Application
Presentation
Session
Transport
Network
Link
Physical
2
1
3
4
5
6
7
8
9
10