Advantech RS-485 Uživatelský manuál stáhnout pdf (Strana 318)

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101

C-6 ADAM-5000

RS-485 Network

Combination of an ADAM-4000 and an ADAM-5000 in a

RS-485 Network

The following figure shows how to integrate ADAM-4000 and

ADAM-5000 systems in a network.

Figure C-4 ADAM-4000 and ADAM-5000 in a network

Note: The speed of ADAM-4000 and ADAM-5000 in a RS-

485 network should be the same.

C.2 Line Termination

Each discontinuity in impedance causes reflections and distortion.

When a impedance discontinuity occurs in the transmission line the

immediate effect is signal reflection. This will lead to signal distortion.

Specially at line ends this mismatch causes problems. To eliminate this

discontinuity, terminate the line with a resistor.

SYSTEM

ADAM-5000

repeater

Repeater

RS-485

RS-232

RS232/RS485

Coverter

ADAM-4000 I/O

MODULES

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Související produkty a manuály pro Digitální a analogové I / O moduly Advantech RS-485