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Isolated High-Speed Serial Port Powered

Serial Media Conversion Solution

TCC-80I/80I-DB9 User’s Manual P/N: 1802000801012 Third Edition.

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.

+D/+R

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PIN RS-422/485

1 T+

2 T-

3 R+/D+

4 R-/D-

5 GND

RS-232 Pinouts

The female DB9 port for the RS-232 signal is

shown in the following figure.

5 4 3 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 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

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TCC-80I

USB Connector

Connector Pinouts Signals

1 +5 VDC

2 --

3 --

4 GND

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TCC-80I / TCC-80I-DB9

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

Features and Specifications

• Signals:

RS-232: TxD, RxD and GND

RS-422: TxD+(B) / -(A),

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

RS-485: Data+(B) / -(A), GND

• Port types:

RS-232: Female DB9

RS-422/485: Terminal Block or Male DB9

• Auto-senses baudrates from 50bps to 921.6Kbps

• 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 80 22 mm

• Case: ABS + PC

shorted • Weight: 50 ± 5 g

• CE, FCC Class B approval

• Power Consumption: 20 mA at +5 VDC

(termination disabled)

• Warranty: 5 years

shorted

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

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.

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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.

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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).

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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 NO

19200 1200 (ON) 120Ω NO

38400 600 (ON) 120Ω NO

57600 300 (ON) 120Ω NO

115200 150 (ON) 120Ω NO

Switch and Jumper Settings

To change the operation mode, check the DIP

Switch settings on the back panel.

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DIP Switch Settings

SW1 SW2 SW3 RS-422 with

Terminator OFF OFF ON

SW1 SW2 SW3

RS-422 OFF OFF OFF

SW1 SW2 SW3 4-wire RS-485 with

Terminator ON OFF ON

SW1 SW2 SW3

4-wire RS-485 ON OFF OFF

SW1 SW2 SW3 2-wire RS-485 with

Terminator ON ON ON

SW1 SW2 SW3

2-wire RS-485 ON ON 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.

Product specificaties

Merk:	Moxa
Categorie:	Niet gecategoriseerd
Model:	TCC-80-DB9
Gewicht:	50 g
LED-indicatoren:	Ja
Certificering:	CE, FCC
Ingangsspanning:	5 - 12 V
Temperatuur bij opslag:	-20 - 75 °C
Stroomverbruik:	10 mA
Hostinterface:	RS-232
Afmetingen (B x D x H):	42 x 80 x 22 mm
Bedrijfstemperatuur (T-T):	0 - 60 °C
Relatieve vochtigheid in bedrijf (V-V):	5 - 95 procent
Output interface:	RS-422/485
Over current bescherming:	Ja
Electrostatic Discharge (ESD) bescherming:	15 kV
Baud snelheid:	0.05 Kbit/s
RS-422 signalen:	RxD+, RxD-, SGND, TxD+, TxD-
RS-485 signalen:	Data+, Data-, RxD+, RxD-, SGND, TxD+, TxD-
RS-232 signalen:	CTS, DCD, DSR, DTR, GND, RTS, Rx, Tx