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Isolated High-Speed Serial Port Powered
Serial Media Conversion Solution
Transio TCC-80I User’s Manual P/N: 1802000801000 First Edition.
www.moxa.com ©2006 MOXA Technologies.
MOXA Technologies Co., Ltd.
All rights reserved.
RS-422/485 Connection
The RS-422/485 port to terminal block connector is
shown below. Note that some RS-422/485 devices
are labeled “+” and “-” and some are labeled “B”
and “A”. In other words, Data (B) is equivalent to
Data (+) and Data (A) is equivalent to Data(-).
RS-422/4w RS-485 2w RS-485
T+
T.
R+/D+
R./D.
GND
R+
R.
T+
T.
GND
T+
T.
R+/D+
R./D.
GND
D+
D.
GND
RS-232 Pinouts
The female DB9 port for the RS-232 signal is
shown in the following figure.
54321
9
687
PIN RS-232
1 DCD
2 TxD
3 RxD
4 DSR
5 GND
6 DTR
7 CTS
8 RTS
Note: As shown above, RTS and CTS are
shorted, and DTR, DSR, DCD are shorted.
This frees users from the hardware flow
control cable wiring problem.
USB Power Cord
If additional external power is required, TCC-80I
can be connected to a standard 5 to 12 VDC power
supply or the USB power cord CBL-USBAP-50.
USB “A” Male Connector
Front:
4 3 2 1
Top:
TCC-80I
USB Connector
Connector Pinouts Signals
1 +5 VDC
2 --
3 --
4 GND
TCC-80
I
inner
outer
DC Power Plug
CBL-USBAP-50
USB
USB Host
A Type Female
+5 VDC
GND
Cable Wiring
1
4
5-12 VDC
20 mA (max.)
Ø2.1±0.1
Ø5.1±0.1
Transio TCC-80I
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 Surge
Protection.
Overview
The TCC-80I is the world’s first high-speed,
isolated, self-powered converter. It is powered via
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’s built-in 15 KV ESD surge protector
provides the output ports with comprehensive
protection against surges and spikes. 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
• 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
• Supports baudrate up to 115.2 Kbps
• RS-232 loopback: RTS to CTS; DTR to DSR
and also DCD
• Supports automatic RS-485 data direction
control with no baudrate switch settings
• 15 KV ESD for all RS-232/422/485 signals
• 2.5KV Optical 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 and DTR
(RTS/DTR ON are recommended)
• LED Port Power Indicator (switch settings)
• Ext. Power (jack): DC +5V to +12V adapters 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: 20 mA at +5 VDC
(termination disabled)
• Warranty: 2 years
shorted
shorted