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參數(shù)資料
| 型號： | TSXSCPCX4030 |
| 英文描述： | COMMS CABLE RS422/RS485 |
| 中文描述： | 通訊科電纜RS422/RS485 |
| 文件頁數(shù)： | 7/18頁 |
| 文件大?。?/td> | 316K |
| 代理商： | TSXSCPCX4030 |
40050/8
Modicon TSX Nano PLCs
Nano PLCs
Functions
(continued)
Uni-Telway communication
The Nano PLC can communicate with other Uni-Telway
devices via the terminal port : speed controllers, operator
terminals, compact or modular PLCs.
The ability to send and receive messages means that Nano
PLCs can be integrated in distributed architectures.
In slave mode, for example, the Nano PLC can initiate
communication and send updated variables to the bus
master (local reflex processing).
28 Nano slave PLCs can be connected to the Uni-Telway
bus over a distance of 1 km (isolated for speeds of 1.2 to 9.6
K bits/s).
Modbus slave communication
Nano PLCs have an RS 485 serial link extension port,
supporting the Modbus protocol (depending on the model).
It is used to perform the following requests :
i
Read/write bits and words
i
Read PLC status (via Uni-TE request)
i
Set to RUN or STOP mode (via Uni-TE request)
i
Initialise the PLC (via Uni-TE request)
Up to 28 Nano PLCs can be connected over a distance of
200 m for user-definable speeds of 1.2 to 19.2 K bits/s.
ASCII communication
The ability to send and receive characters enables the
Nano PLC to communicate in point-to-point mode with a
large number of ASCII devices, such as PCs (directly or via
modem), printers, bar code readers, etc.
Frame speed and format can be configured. Connection to
the Nano PLC terminal port is via an RS 232/485 converter
cable powered by the PLC.
Modem application
(Modbus or Uni-Telway protocol)
A PLC fitted with a Modbus or Uni-Telway master module
interrogates Nano PLCs via the switched telephone net-
work.
When connected to a Modem in RS 485 mode, the master
can use the link to generate dialling sequences for remote
sites.
Each Nano PLC responds to requests from the master, but
is also able to trigger a call by activation of a discrete input
on the Modem.
Target applications (with Modbus or Uni-Telway) :
i
System teleprocessing
i
Telemonitoring of remote sites
i
Water, energy, environment control
The Uni-Telway slave link of Nano PLCs can also be used
for :
i
Up/down loading programs
i
Programming and remote diagnostics
Micro
Nano
CCX 17
Bar
code
reader
Micro
Nano
Nano
Nano
Characteristics :
pages 40050/9 to 40050/11
References :
pages 40050/12 to 40050/14
Dimensions :
page 40050/15
Connections :
pages 40050/16 to 40050/19
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