Moxa Technologies Transio TCC-80 V2.2, Transio TCC-80-DB9 V1.0 User Manual

Serial Port Powered Media Conversion Solution

Transio TCC-80/80-DB9 User’s Manual P/N: 1802000800011 Third Edition.

www.moxa.com ©2008 Moxa Inc.
Moxa Inc.

All rights reserved.

RS-422/RS-485 Pinouts

The RS-422/RS-485 port with terminal block
connector is shown below. Note that some
RS-422/485 devices “B” instead of “+” and use “A”
instead of “-”. That is, Data (B) equals Data (+), and
Data (A) equals Data (-).

+T

T

+D/+R

R

D/

DNG

54

321

9876

PIN RS-422/485

1 T+
2 T­3 R+/D+
4 R-/D­5 GND

USB Power Cord

The TCC-80 can be connected to a standard 5 to 12
VDC power supply, or you may use the USB
Power Cord CBL-USBAP-50 if additional
external power is required.

USB “A” Male Connector

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1 2 3 4

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TCC-80
USB Connector
Connector Pinouts Signals

1 +5 VDC
2 -­3 -­4 GND

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Transio TCC-80 V2.2 /
TCC-80-DB9 V1.0

Self-powered RS-232 to RS-422, 2-wire/4-wire
RS-485 bi-directional converter with 15 KV ESD
protection

Overview

The TCC-80, which is powered by the RS-232 port,
provides complete signal conversion between
RS-232 and RS-422/485 devices. The TCC-80
converts back and forth between RS-232’s TxD and
RxD lines, and either half duplex RS-485 or the
balanced signal of full duplex 4-wire RS-422/485.
In addition, the TCC-80 provides comprehensive 15
KV ESD protection for all serial lines. The TCC-80
is also designed to provide RS-485 auto data
direction control, in which the RS-485 driver is
enabled automatically when the circuitry senses the
TxD output from the RS-232 signal. Programming
is not required to control the transmission direction
of the half duplex RS-485 signal.

Package Checklist

• TCC-80 or TCC-80-DB9

• USB Power Cord

• User’s Manual

Applications

• Multipoint data acquisition

• Factory automation

• Remote serial device control

• Building security automation

• Critical industrial control

Features and Specifications

• Serial interfaces: RS-232, RS-422, and

2-wire/4-wire RS-485.

• Port types: Female DB9 for RS-232; Te rminal

Block for RS-422/485

• Compact size.

• Auto senses baudrates up to 115.2 Kbps.

• Signals:

RS-232: TxD, RxD, GND
RS-422: TxD+ (B)/-(A), RxD+ (B)/-(A), GND
RS-485: Data+ (B)/-(A), GND

• RS-232 loopback:

RTS to CTS, and DTR to DSR and DCD.

• Supports automatic RS-485 data direction control

with no baudrate switch settings for RS-485.

• 15 KV ESD protection for all RS-232/422/485

signals.

• Built-in 120 ohm termination resistors for

RS-422/RS-485 (DIP switch selectable).

• Supports up to 32 units connected in an RS-485

multi-drop network.

• Serial Power Source: TxD, RTS, or DTR.

• External Power (jack): DC +5V to +12V adaptors

or a USB power cord (DC +5V).

• Operating temperature: 0 to 60°C (32 to 140°F).

• Dimensions: 42 × 80 × 22 mm.

• Case: ABS + PC.

• Weight: 50 ± 5 g.

• CE, FCC Class B approval.

• Power Consumption: 10 mA at +5 VDC

(termination disabled).

• Warranty: 5 years.

Transio TCC-80/80-DB9 User’s Manual Transio TCC-80/80-DB9 User’s Manual

Installation

RS-232 Serial Port Power

The RS-232 port of the TCC-80 is designed with a
female DB9 socket for connecting directly to the
host PC, with power drawn from the TxD, RTS, or
DTR lines. Regardless of whether the signal is high
or low, the TCC-80 is still able to obtain enough
power from the three data/handshake lines. For
applications that do not use the handshake lines, a
DC jack is provided for connecting a 5 to 12 VDC
power supply through a USB power cord or
external power adaptor.

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Port Power Dissipation

When installing an RS-232 port-powered TCC-80
converter, pay attention to the power consumption,
RS-232 cable length, power provided by the serial
port, and the RS-422/485 transmission distance. In
general, the TCC-80 itself derives 50 mW from the
power source; a standard COM port on a host PC
can provide 70 to 90 mW of power if the TxD, RTS,
and DTR lines are connected. Moreover, the
RS-232 cable length should be shorter than 15 m
(@ 9600 bps) to ensure that less power is lost when
making the trip from the host/device to the TCC-80.
The rest of the supplied power is used for
transmitting the RS-422/485 signal.

Optional External Power

Termination is a critical requirement for port-power
devices such as the TCC-80. In most circumstances,
termination resistors are used when the RS-422/485
cable length is longer than 100 m. Regardless of
how much the data signal is dissipated, the
termination resistors absorb more than 75 mW of
power from the power source when TCC-80 is
unable to use the limited serial power. In other
words, if long distance RS-422/485 transmission or
termination is required, then an external USB power
cord or DC power supply should be used (in this
case, DIP SW3 must be ON).

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Baud rate

(bps)

RS-422/485

Transmit

Distance (m)

Embedded

Terminator

RTS/DTR or

Ext. Power

Required

9600 1200

(ON) 120 Ω

NO

19200 1200

(ON) 120 Ω

NO

38400 600

(ON) 120 Ω

NO

57600 300

(ON) 120 Ω

NO

115200 150

(ON) 120 Ω

NO

Serial Port Power Compatibility

Different kinds of serial ports use different interface
chips, and provide different power levels. In fact,
some ports will not provide enough power to
activate the TCC-80.

You will seldom encounter problems with a PC’s
onboard COM1 and COM2 ports. Refer to the
following table for add-on cards and
serial-to-Ethernet device server that are guaranteed
to provide sufficient power.

Multiport Serial BoardsSerial Device Servers

Moxa Boards

CP-168U Series
CP-104U Series
CP-102U Series
C168H Series
C104H Series

Moxa NPort Servers

CN2510
CN2610
NPort 5110
NPort 5210
NPort 5410
NPort 5610
NPort 6150
NPort 6250
NPort 6450
NPort 6650

Switch and Jumper Settings

To change the operation mode, check the back
panel for the DIP Switch settings, as shown below:

321

N

O

DIP Switch Settings

SW1 SW2 SW3RS-422 with

Terminator

OFF OFF ON
SW1 SW2 SW3

RS-422

OFF OFF OFF
SW1 SW2 SW34-wire RS-485 with

Terminator

ON OFF ON

SW1 SW2 SW3

4-wire RS-485

ON OFF OFF

SW1 SW2 SW32-wire RS-485 with

Terminator

ON ON ON

SW1 SW2 SW3

2-wire RS-485

ON ON OFF

DIP switches SW1 and SW2 are used to select the
operation modes (RS-422, or 4W or 2W RS-485).
The termination is controlled by DIP switch SW3.

External Power Supply

The TCC-80 can be connected to a standard 5 to 12
VDC power adaptor if additional external power is
required.

RS-232 Pinouts

The female DB9 port for the RS-232 signal is
shown in the following figure.

5

43 12

9

68

7

PIN RS-232

1 DCD
2 TxD
3 RxD
4 DSR
5 GND
6 DTR
7 CTS
8 RTS

Note: The RTS and CTS pins are shorted, and

the DTR, DSR, and DCD pins are shorted,
so that users do not need to worry about
hardware flow control cable wiring.

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