Moxa TCC-120/120I User’s Guide www.moxa.com/product Eighth Edition, August 2009 © 2009 Moxa Inc. All rights reserved. Reproduction without permission is prohibited.
Moxa TCC-120/120I User’s Guide The software described in this manual is furnished under a license agreement and may be used only in accordance with the terms of that agreement. Copyright Notice Copyright © 2009 Moxa Inc. All rights reserved. Reproduction without permission is prohibited. Trademarks MOXA is a registered trademark of Moxa Inc. All other trademarks or registered marks in this manual belong to their respective manufacturers.
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Table of Contents Chapter 1 Introduction 1-1 Overview ...................................................... 1-2 Product Features .......................................... 1-4 Package Checklist ........................................ 1-4 Product Specifications .................................. 1-5 Product Views............................................... 1-7 LED Indicators .............................................. 1-7 Chapter 2 Installation 2-1 Hardware Installation........................
1 Chapter 1 Introduction The TCC-120 and TCC-120I are RS-422/485 isolated repeaters, and the TCC-120I comes with 2 KV isolation protection.
Overview Introduction Many important devices used in today’s industrial environment use the RS-422 or RS-485 interface for data transmission. In some cases however, it is necessary to extend the transmission distance between RS-422/485 devices. This is where the TCC-120/120I RS-422/485 Repeaters come in. Simply wire the power terminal block, wire the two signal terminal blocks, set the DIP switches, and you’re ready to go. The RS-422/485 standards use a differential signal for transmitting data signals.
Introduction Built-in RS-485 ADDC™ Intelligence ADDC™ (Automatic Data Direction Control), a Moxa leading technology, uses a clever hardware solution to take care of the RS-485 data flow control problem. ADDC™ is a hardware data flow solution that automatically senses and controls data direction, making the handshaking signal method unnecessary. Isolation Moxa’s electrical isolation technology uses two photo couplers to create a gap in each electrical signal.
Auto Baudrate Detection The TCC-120/120I incorporates a method for automatically detecting the serial signal’s baudrate by hardware. This is an extremely convenient feature for the user. Even if a device’s baudrate changes, the signal will still be transmitted through the RS-422/485 repeater without any problems. Product Features • Boost serial signal for extending transmission distance up to an additional 1.
Introduction Optional Accessory • 2 DIN-Rail mounting brackets with 4 screws Please notify your sales representative if any of the above items is missing or damaged. Product Specifications Model Names TCC-120, TCC-120I Communication Signals for 2-wire (RS-485 2-wire) Signals for 4-wire (RS-422 or 4-wire RS-485) Data+, Data-, SGND Tx+, Tx-, Rx+, Rx-, SGND RS-485 Data Direction Control ADDC™ Baudrate 50 bps to 921.
Power Consumption TCC-120: TCC-120I: 3.4 W 3.
Introduction Product Views Top-End View ON 1 2 T+ T Side View SGND R /D R+/D + Top Panel View PWR Transio TCC-120 12 48VDC V V+ SGND T T+ R /D R+/D + RS-422/485 repeater Bottom-End View ON 1 2 LED Indicators The TCC-120/120I’s top panel contains three LED indicators, as described in the table below: RED PWR Orange GREEN TCC-120/120I User’s Guide 1-7
LED Name PWR LED Function Red indicates the power is on. Orange Data is entering through the top-end port and exiting through the bottom-end port. Green Data is entering through the bottom-end port and exiting through the top-end port.
2 Chapter 2 Installation This chapter includes information about how to install the TCC-120/120I.
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.
Installation Dip Switch Settings RS-422/4-wire RS-485 with Terminator SW1 SW2 ON ON SW1 SW2 ON OFF ON 1 2 4-wire, termination enabled RS-422/4-wire RS-485 ON 1 2 4-wire, termination disabled 2-wire RS-485 with Terminator SW1 SW2 ON OFF ON 1 2 SW1 SW2 OFF OFF 2-wire, termination enabled 2-wire RS-485 ON 1 2 2-wire, termination disabled V+ V- STEP 2: Attach the Power Supply + Power Supply 12 - 48 VDC The TCC-120/120I is powered by an external 12-48 VDC power supply.
NOTE The TCC-120/120I provides reverse power protection. It will automatically detect which power wire is negative, and which is positive. STEP 3: Wire the Terminal Block There are two wiring options available for connecting to the TCC-120/120I’s RS-422/485 terminal block.
Installation STEP 4: Test the Connection After setting the DIP Switches, connecting the power, and wiring the terminal block, we suggest using a Console Terminal program, such as HyperTerminal or Moxa Terminal Emulator, to test the connection.
