Moxa TCC-120 Betriebsanweisung PDF herunterladen (Seite 14)

Hardware Installation

Four steps are required to installing the TCC-120/120I:

• STEP 1: Set the terminator DIP Switches

• STEP 2: Attach the Power Supply

• STEP 3: Wire the RS-422/485 Terminal Blocks

• STEP 4: Test the Connection

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

STEP 1: Set the DIP Switches

The DIP Switches on the TCC-120/120I are used to set the signal

transmission mode and to enable or disable the termination resistor.

You can configure for either 2-wire (RS-485) or 4-wire (RS-422/485)

transmission mode. Also note that your program and serial port should

be set to match the repeater’s settings.

NOTE The TCC-120/120I has two sets of DIP Switches—one set

on the top-end and the other set on the bottom-end. To

ensure proper data transmission, make sure that the two

sets of DIP switches are configured the same.

SW1— Switch 1 selects 4-wire or 2-wire mode. Set Switch 1 to the

ON position for 4-wire, and to the OFF position for 2-wire.

SW2— Switch 2 enables or disables termination. Set Switch 2 to the

ON position to enable termination, and to the OFF position to disable

termination.

Æ For easy reference, the following figures show the four possible

settings.

2-2 TCC-120/120I User’s Guide

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Moxa TCC-120 Betriebsanweisung Seite 14