
Moxa TCC-100 Series User’s Guide
Isolation Block Diagram
Local Power
Data
Input
Data
Output
Optical
Isolator
Regulated
Power Supply
+5V
+5V
V+
+
V
-
+5V +5V
12-30 VDC
Typical Applications
RS-485 Application
A typical RS-485 application for TCC-100 Series is depicted in the following
figure. In this scenario, two TCC-100 Series units are used to connect two PCs to
an RS-485 network. The third TCC-100 Series is used to connect the PLC—
which is designed for the RS-232 interface—to the RS-485 network. In this way,
both PCs are able to interact with the PLC and the LCD Display.
MOXA
TCC-100 Series
MOXA
TCC-100 Series
MOXA
TCC-100 Series
R
R
R
T
T
T
RS-485
Network
PC
PC
PLC
LCD Display
RS-232
RS-232
RS-232
PWR
RS-232 Tx
RS-232 Rx
Transio
RS-232 to RS-422/485
converter
RS-232
RS-422/485
Tx+(B)
Tx (A)
Rx+(B)(Data +)
Rx (A)(Data )
RTS+(B)
RTS (A)
CTS+(B)
CTS (A)
SGND
V+
V
DC9~30V
TCC-100
PWR
RS-232 Tx
RS-232 Rx
Transio
RS-232 to RS-422/485
converter
RS-232
RS-422/485
Tx+(B)
Tx (A)
Rx+(B)(Data +)
Rx (A)(Data )
RTS+(B)
RTS (A)
CTS+(B)
CTS (A)
SGND
V+
V
DC9~30V
TCC-100
PWR
RS-232 Tx
RS-232 Rx
Transio
RS-232 to RS-422/485
converter
RS-232
RS-422/485
Tx+(B)
Tx (A)
Rx+(B)(Data +)
Rx (A)(Data )
RTS+(B)
RTS (A)
CTS+(B)
CTS (A)
SGND
V+
V
DC9~30V
TCC-100
2-8
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