UNI-T UT321 Manual de usuario descargar pdf (Pagina 4)

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GS 05D01D12-02E 4th Edition Mar. 01, 2005-00

● Communication Functions (Optional Function )

The communication function, provided with the instrument,

allows connection to a personal computer, programmable

logic controller, and other controllers.

Communication protocol

Computer link communication:

Communication protocol with a personal

computer.

Ladder communication:

Communication protocol with program-

mable logic controllers.

MODBUS communication:

Communication protocol with a personal

computer or PLC.

Coordinated operation:

Communication protocol for coordinated

operation with two or more GREEN series

controllers. The UT321 can be connected as

a master station or a slave station.

Communication interface

Communication protocol:

Computer link, ladder communication,

MODBUS communication or coordinated

operation

Standards: EIA RS-485

Maximum number of connectable controllers:

31 GREEN series controllers

Maximum communication distance: 1,200 m

Communication method:

Two-wire half duplex or four-wire half-

duplex, start-stop synchronization, non-

procedural

Communication rate:

600, 1200, 2400, 4800, or 9600 bps

Personal computer

UT351/UT321

Digital indicating controller

UP351 Program controller

or UT351/UT321 Digital indicating controller

UT351/UT321

Digital indicating controller

UT351/UT321

Digital indicating controller

(1) Computer link communication/MODBUS communication (2) Ladder communication

(3) Coordinated operation

PLC

Examples of Communication System Configuration Diagram

1 2 3 4 5 6 7 8 9 10 11 12

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UNI-T UT321 Manual de usuario Pagina 4

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