Moxa Technologies TCC-80I Series Bedienungsanleitung

P/N: 1802000801014

*1802000801014*

TCC-80I/TCC-80I-DB9 Series

Quick Installation Guide

Isolated High-Speed Serial Port Powered

Serial Media Conversion Solution

Version 4.1, January 2021

Technical Support Contact Information

www.moxa.com/support

- 2 -

First high-speed, isolated, self-powered RS-232 to RS-422, 2-wire/4-wire

RS-485 bi-directional converter with 2.5 KV isolation and 15 KV ESD

protection.

Overview

The TCC-80I is the world’s first high-speed, isolated, self-powered

converter. It is powered through the host’s RS-232 port and provides

complete signal conversion between RS-232 and RS-422/485 devices.

The TCC-80I coverts back and forth between RS-232’s TxD and RxD lines

to either half duplex 2-wire RS-485 or the balanced signal of full duplex

4-wire RS-422/485. In addition, the TCC-80I provides comprehensive 15

KV ESD protection for all serial lines. Perhaps the most important feature

is the 2.5 KV isolation designed to prevent ground loop currents, reduce

damage caused by data loss, and prevent damage to the communication

interfaces. The TCC-80I 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 effort is not required to control the transmission direction of

the half duplex RS-485 signal.

Package Checklist

•TCC-80I or TCC-80I-DB9

•USB Power Cord

•User’s Manual

Applications

•Multipoint data acquisition

•Factory automation

•Remote serial device control

•Building security automation

•Critical industrial control

- 3 -

Features and Specifications

•Signals:

-232:

-422:

RS-485:

TxD, RxD and GND

TxD+(B) /

-(A),

RxD+(B) /

-(A), GND

Data+(B) / -(A), GND

•Port types:

-232:

RS-422/485:

Female DB9

Terminal Block or Male DB9

•Auto-senses baudrates from 50bps to 115.2Kbps

•RS-232 loopback: RTS to CTS; DTR to DSR and DCD

•Supports automatic RS-485 data direction control with no baudrate

switch settings

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

•2.5 KV isolation

•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 (RTS/DTR ON is

recommended)

•LED Port Power Indicator (switch settings)

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

(DC +5V)

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

•Dimensions: 42 x 80 x 22 mm

•Case: ABS + PC

•Weight: 50 ± 5 g

•CE, FCC Class B approval

•Power Consumption: 20 mA at +5 VDC (termination disabled)

•Warranty: 5 years

Installation

Serial (RS-232) Port Power

The RS-232 port of TCC-80I is designed with a female DB9 socket to

connect directly to the host PC, with power drawn from the TxD, RTS, or

DTR lines. TCC-80I is capable of taking enough power from the attached

Tx line only. For those attached serial RS-232 devices which does not

provide enough power on its Tx line, additional handshake lines should be

connected to TCC-80I. The DC jack of TCC-80I is also provided for

connecting a 5 to 12 VDC power supply via a USB power cord or external

power adaptor.

- 4 -

Port Power Dissipation

When installing an RS-232 port-powered TCC-80I 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, TCC-80I itself derives 70 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 from the host/device to the TCC-80I.

Serial Port Power Compatibility

Serial ports use a diversity of interface chips, but the power provided by

the different ports is not always the same. In fact, some of the ports do

not provide enough power to activate the TCC-80I. The on-board COM1

and COM2 ports seldom have problems. The table shows the add-on

cards and the serial-to-Ethernet device servers that have been tested as

a good power source to drive the TCC-80I.

Multiport Serial Boards

Serial Device Servers

Moxa Boards

CP-168U Series

CP-104U Series

CP-102U Series

C168H Series

C104H Series

Moxa NPort Servers

CN2510

CN2610

NPort5110

NPort5210

NPort5410

NPort5610

NPort6150

NPort6250

NPort6450

NPort6650

LED Port Power Indicator

The best way to ensure the attached serial port provides enough

electricity to the TCC-80I is to check the power indicator LED at the front

panel. To do this, connect the TCC-80I to the target RS-232 port, and

then turn the SW4 switch to the right side to the “Test” mode. The

TCC-80I is receiving enough power if the LED lights up after activating the

attached serial device. If the LED does NOT light up, you will need to

attach the external power cord to the TCC-80I.

NOTE

Be sure to turn the SW4 switch back to Std. mode (the default)

when you finish testing. When in

Test mode, the TCC-80I

WILL

NOT transmit data.

- 5 -

Optional External Power

Termination is a critical requirement for port-power devices such as the

TCC-80I. 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-80I 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).

By testing the TCC-80I at different baudrates and transmission distances,

we have determined the maximum transmission distance that can be

achieved when using serial port power. The test results are shown in the

following table.

Baudrate (bps)

RS-422/485

Transmission

Distance (m)

Embedded

Terminator

External Power

Required

9600

1200

(ON) 120Ω

19200

1200

(ON) 120Ω

38400

600

(ON) 120Ω

57600

300

(ON) 120Ω

115200

150

(ON) 120Ω

- 6 -

Switch and Jumper Settings

To change the operation mode, check the DIP Switch settings on the back

panel.

DIP Switch Settings

RS-422 with

Terminator

SW1

SW2

SW3

OFF

RS-422

SW1

SW2

SW3

OFF

4-wire RS-485 with

Terminator

SW1

SW2

SW3

OFF

4-wire RS-485

SW1

SW2

SW3

OFF

2-wire RS-485 with

Terminator

SW1

SW2

SW3

2-wire RS-485

SW1

SW2

SW3

OFF

DIP SW1 and SW2 are used to select the operation modes (RS-422, 4W or

2W RS-485). The termination is controlled by DIP SW3.

Ext. Power supply

If additional external power is required, TCC-80I is designed to be

connected to a standard 5 to 12 VDC power adapter.

RS-422/485 Pinouts

The RS-422/RS-485 port with Terminal Block Connector is shown below.

Note that some for some RS-422/485 devices, “B” is used in place of “+”

and “A” is used in place of “-“. That is, Data(B) Data(A) are equivalent to

Data (+) and Data(-), respectively.

RS-422/485

T+

T-

R+/D+

R-/D-

GND

RS-232 Pinouts

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

figure.

RS-232

DCD

TxD

RxD

DSR

GND

DTR

CTS

RTS

shorted

- 7 -

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 the

hardware flow control cable wiring problem.

USB Power Cord

If additional external power is required, the TCC-80I can be connected to

a standard 5 to 12 VDC power supply, or the USB power cord

(CBL-USBAP-50) can be used.

USB “A” Male Connector

TCC-80I USB Connector

Connector

Pinouts

Signals

+5 VDC

–

GND

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