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Presentation
The Fipway network is an open industrial local area network for communication
between the various Modicon TSX Micro, Modicon Premium and TSX Series 7 PLCs
using the X-Way services. It conforms to the FIP standard with access via a bus
arbitrator.
Modicon TSX Micro (TSX 37 21/22)/Premium PLCs can be connected to a Fipway
network using a Fipway PCMCIA card which is inserted in each processor or into the
TSX SCY 21601
(
Modicon Premium) communication module. Supported X-Way
services (see pages 5/98 and 5/99) are:
b
Uni-TE services
b
Distributed database (COM) or Shared Table
b
Telegram (service only available when the PCMCIA card is inserted in the
processor)
b
Application-to-application communication
For
Fipway network wiring system
and connection accessories, see pages 5/110
and 5/113.
Performance
The operating principle of a Fipway network gives guaranteed, constant network
cycle times, whatever the traffic and number of stations (2 to 64). This enables the
Fipway network to be updated (addition or removal of stations) without affecting the
performance.
Maximum transmission time
b
Telegram (TLG): priority application messages are transmitted in less than 10 ms
(
one telegram per station).
b
Common words (COM): the database of common words is updated every 40 ms.
b
Shared Table: the entire exchange table is updated every 40 ms.
b
Uni-TE message handling: Uni-TE or standard application-to-application
messages are normally transmitted in less than 80 ms (40 ms for stations with
addresses below 32). Where there is a large amount of traffic, some messages may
wait for several cycles before being transmitted. The network characteristics enable
a maximum of 210 messages of 128 bytes per second to be transmitted.
The performance can be improved by inhibiting the Telegram service on the entire
network.
With such network characteristics, the response time at application level depends
almost exclusively on the processing capacity of the devices which are connected.
For example, the remote loading of a 50 K word program takes less than two minutes
on a network with normal load
CT1 = Cycle time of device 1
NCT = Cycle time of Fipway network
CT2 = Cycle time of device 2
The response time must be evaluated by the designer of each application in relation
to the devices connected.
The processing time of a device can vary from one to two cycle times as a function of
asynchronous operation.
Ethernet TCP/IP
Fipway
Modicon
Premium
Bus X
TSX série 7
TSX 17 20
Modicon
Premium
Modicon TSX Micro
Extension
bus X
Presentation,
performance
Event
Action
CT1 CT1 CT1 CT1
NCT NCT
CT2 CT2
Modicon Premium automation
platform
Fipway network
Report
2
1
3
4
5
6
7
8
9
10