Moxa TCC-100 Series User’s Guide Tenth Edition, September 2011 www.moxa.com/product © 2011 Moxa Inc. All rights reserved.
Moxa TCC-100 Series 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 © 2011 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.................................................................... Product Features ......................................................... Package Checklist........................................................ Product Specifications .................................................. Schematic .................................................................. LED Indicators ......................
1 1. Introduction TCC-100 series consists of RS-232 to RS-422/485 media converters. The “I” versions, the TCC-100I/TCC-100I-T come with 2 KV isolation protection.
Overview Many important devices used in today’s industrial environment are still designed for use with an RS-232 interface. The reason is due in part to tradition, and in part to convenience. RS-232 hardware is relatively easy to design, and the device can be readily connected to most PCs. The drawback is that RS-232 is a point-to-point interface, and it imposes a distance limitation of only 15 meters between the device and the computer.
RTS/CTS RS-422 Handshaking Signals The TCC-100 series supports RS-422 handshaking signals. The RTS and CTS signals help solve the RS-422 signal handshaking problem and reduce data transmission errors. Built-in RS-485 ADDC™ Intelligence ADDC™ (Automatic Data Direction Control) is a Moxa technology that uses a clever hardware solution to manage RS-485’s data flow control problem.
Product Features • • • • • • • RS-232 to RS-422 conversion with RTC/CTS support RS-232 to 2/4-wire RS-485 conversion Detachable wall and DIN-Rail mounting for easy RS-422/485 wiring PWR, Tx, and Rx LEDs 15 KV ESD protection 2 KV isolation (TCC-100I/TCC-100I-T) for both power and RS-422/485 signals Operating temperature: TCC-100/100I: -20 to 60°C (-4 to 140°F) TCC-100-T/100I-T: -40 to 85°C (-40 to 185°F) Package Checklist Before installing the Moxa TCC-100 product, verify that the package contains the foll
Isolation 2 KV (TCC-100I/TCC-100I-T) for both power and signal Environmental Limits Operating Temperature Storage Temperature Humidity Power Requirements TCC-100/TCC-100I: -20 to 60°C (-4 to 140 °F) TCC-100-T/TCC-100I-T: -40 to 85°C (-40 to 185 °F) -40 to 85°C (-40 to 185°F) 5 to 95 %RH Input Power Voltage Reverse Power Protection Over Current Protection Power Consumption External Power 12-48 VDC, terminal block Protects against V+/V- reversal Dimensions 67 × 100 × 22 mm (without ears) 90 × 100 × 22
WARNING 1. The DC source should come from an external adaptor or 12 2. 3. to 48 VDC source (not from DC mains) by using a transfer device. This unit should be installed or set up by a qualified service person. The 12 to 48 VDC power input is used for product version 2.0 and later. Prior versions use 12 to 30 VDC.
LED Indicators The TCC-100’s top panel contains three LED indicators, as described in the following table: LED Name LED Function PWR Red indicates the power is on. Green indicates the TCC-100 is receiving data from the RS-232 port. Yellow indicates the TCC-100 is receiving data from the RS-422/485 port.
2 2. Installation This chapter includes information about how to install TCC-100 products, and shows function and block diagrams.
Hardware Installation Installing the TCC-100 involves six straightforward steps: • • • • • • STEP STEP STEP STEP STEP STEP 1: 2: 3: 4: 5: 6: Set the DIP switches Attach the power supply Wire the terminal block Attach the RS-232 converter Test the connection Choose a placement option STEP 1: Set the DIP Switches The DIP switches on the TCC100/100I are used to set the signal transmission mode and to enable or disable the termination resistor.
4-wire RS-485 SW1 OFF SW2 ON SW3 OFF 2-wire RS-485 (terminator active) SW1 OFF SW2 OFF SW3 ON 2-wire RS-485 SW1 OFF SW2 OFF SW3 OFF The DIP-2 switches are used to configure the pull high/low resistors for different applications. S2 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-100 is powered by an external 12 to 48 VDC power supply. To connect the power supply, run two wires from the V+ and V- terminals on the TCC’s 3-connector terminal block to the DC power supply, as shown in the figure. Once the power supply is connected to its power source, the PWR LED located on TCC’s top panel should turn red. NOTE The TCC-100 series supports reverse power protection. I.e.
RS-422 When using the RS-422 wiring option, first follow the 4-wire RS-485 wiring instructions given above. Optional RTS/CTS Handshaking Signals If your software is set up to send and receive RTS/CTS signals over separate wires, you should also connect from RTS+(B) to CTS+, from RTS-(A) to CTS-, from CTS+(B) to RTS+, and from CTS-(A) to RTS-.
characters were transmitted between the TCC-100’s RS-232 port and RS-422/485 terminal block connector. STEP 6: Placement Options In addition to placing the TCC-100 on a desktop or other horizontal surface, you may also use the DIN-Rail or wall mount options, as illustrated below. DIN-Rail Wall Mounting Termination Resistor Diagram Termination is designed to mitigate noise from the RS-422/485 transmission signals. If the network cable is too long, undesirable transmission-line effects could arise.
Function Diagram Isolation Block Diagram Typical Applications RS-485 Application A typical RS-485 application for the TCC-100 series is shown in the following figure. In this scenario, two TCC-100 units are used to connect two PCs to an RS-485 network. The third TCC-100 is used to connect the PLC, which is designed for the RS-232 interface, to the RS-485 network. In this way, both PCs are able to interact with the PLC and the LCD display.
RS-422 Application A typical RS-422 application for the TCC-100 Series is shown in the following figure. In this scenario, two TCC-100 units are used to create a point-to-point connection between a PC and a scales. The advantage of using two TCC-100 units to convert from RS-232, to RS-422, and then back to RS-232, is that the RS-422 cable connecting the two converters can be up to 1.2 km in length (this is big improvement compared to the 15-m distance limitation imposed by the RS-232 interface).
