Moxa TCC-120/120I Hardware Installation Guide Eleventh Edition, January 2015 www.moxa.com/product © 2015 Moxa Inc. All rights reserved.
Moxa TCC-120/120I Hardware Installation 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 © 2015 Moxa Inc. All rights reserved. Trademarks The MOXA logo 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 1. Introduction .............................................................1 Overview .................................................................... 2 Introduction.............................................................. 2 Built-in RS-485 ADDCTM Intelligence ............................ 3 Isolation ................................................................... 3 Reverse Power Protection ........................................... 3 DIP Switch Selectable Terminator .......
1 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 environments 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.
Built-in RS-485 ADDCTM 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.
Product Features • Boost the serial signal to extend transmission distance up to an additional 1.
Product Specifications Communication Signals for 2-wire (RS-485 2-wire) Signals for 4-wire (RS-422 or 4-wire RS-485) RS-485 Data Direction Control Baudrate Isolation Environmental Operating Temperature Storage Temperature Humidity Power Input Power Voltage Reverse Power Protection Over Current Protection Power Consumption Mechanical Dimensions (W × D × H) Housing Plug-In Screw Terminal Block Color Weight Regulatory Approvals Data+, Data-, SGND Tx+, Tx-, Rx+, Rx-, SGND ADDC™ 50 bps to 921.
Product Views 6
LED Indicators The TCC-120/120I’s top panel contains three LED indicators, as described in the table below: LED Name PWR LED Function Red indicates the power is on. Data is entering through the top-end port and Orange exiting through the bottom-end port. Data is entering through the bottom-end port Green and exiting through the top-end port.
2 2. Installation This chapter includes information about how to install the TCC-120/120I. Five steps are required to install 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 • STEP 5: Placement The details of each of these five 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 modes. 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.
Dip Switch Settings RS-422 Terminator active RS-422 4-wire RS-485 Terminator active 4-wire RS-485 2-wire RS-485 Terminator active 2-wire RS-485 NOTE SW1 SW2 SW3 ON ON ON SW1 SW2 SW3 ON ON OFF SW1 SW2 SW3 OFF ON ON SW1 SW2 SW3 OFF ON OFF SW1 SW2 SW3 OFF OFF ON SW1 SW2 SW3 OFF OFF OFF These switch settings apply for product revision 1.3 and later; for the switch settings of previous product revisions, refer to the label on the rear panel for the correct information.
The newly implemented DIP-2 (S3 and S4) switches are used to configure the pull high/low resistors for different applications. S3 S4 Pull High/Low Resistor 150k 1k (default) NOTE DIP-2 SW1 OFF ON DIP-2 SW2 OFF ON We recommend setting the pull high/low resistor to 1k (ON/ON) when termination is enabled.
STEP 2: Attach the Power Supply The TCC-120/120I is powered by an external 12-48 VDC power supply. To connect to the power supply, run two wires from the V+ and Vterminals, on the TCC-120’s 3-connector terminal block, to the DC power supply, as shown in the figure on the left. Once the power supply is connected to its power source, the PWR LED located on the TCC-120’s top panel should be illuminated in red. NOTE The TCC-120/120I provide reverse power protection.
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.
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