User`s guide

3
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. ADDC™ is a hardware data flow solution that automatically
senses and controls data direction, making the handshaking signal
method unnecessary.
Isolation
Moxa’s electrical isolation technology uses two photo couplers to create a
gap in each electrical signal. One photo coupler transforms the electrical
signal into a light signal, which is transmitted across a small gap, and then
the other photo coupler transforms the light back into an electrical signal.
In this way, the two electrical circuits are completely isolated from each
other, limiting the damage that could otherwise be caused by ground
loops in the electrical signal.
Reverse Power Protection
The Reverse Power Protection feature provides extra protection against
accidentally connecting the power cables to the wrong terminal. The
converter is designed to automatically detect which power wire is positive
and which is negative, and then adjust the power supply accordingly.
DIP Switch Selectable Terminator
For many products of this type, the termination resistor is set by a jumper
located inside the product’s casing, so that the user must open the casing
to disable or change the resistor’s strength. Moxa offers a better solution.
The TCC-100 series’ terminator is configured with a DIP switch located on
the outside of the converter’s casing.
Auto Baudrate Detection
The TCC-100 series incorporates a method for automatically detecting
the serial signal’s baudrate by hardware. This is an extremely convenient
feature for the user. Even if a device’s baudrate changes, the signal will
still be transmitted through the RS-232 to RS-422/485 converter without
any problem.