Moxa TCC-100-T Guide de l'utilisateur télécharger pdf (Page 12)

Moxa TCC-100 Series User’s Guide

Hardware Installation

Installing TCC-100 Series involves five straightforward steps:

• STEP 1: Set the DIP Switches

• STEP 2: Attach the Power Supply

• STEP 3: Wire the Terminal Block

• STEP 4: Attach the RS-232 Converter

• STEP 5: Test the Connection

The details of each of these five steps are described next.

STEP 1: Set the DIP Switches

The DIP Switches on TCC100/100I are used to set the signal transmission mode

and enable or disable the termination resistor. You can configure for either

RS-422 or RS-485 transmission mode. Your program and serial port should be set

to match the converter’s settings.

SW1—Switch 1 selects RS-422 or RS-485 mode. The default is “On” for RS-422

mode.

SW2—Switch 2 selects 2-wire or 4-wire RS-485 mode. The default is “On” for

4-wire RS-485. Note that if Switch 1 is set to RS-422 mode, then Switch 2

is inactive.

SW3—Switch 3 enables the terminator to 120 Ohms. When enabled, the 120

Ohm resistor prevents signal reflection during RS-485 transmission. The

default is “On” to enable the terminator. If your particular application does

not require using the termination resistor, then simply set Switch 3 to the

off position to disable it.

2-2

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18 19

Pas de commentaire

Moxa TCC-100-T Guide de l'utilisateur Page 12