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Din-Rail Mountable RS-232 to RS-422/485 Converter, Embedded surge protection (16KV ESD), with Isolation Protection (2KV)

Product Page @ Moxa Site MOXA Major Lines
Mfg Part Number:  TCC-100I  
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Price: $225.24 + Free Shipping
In Stock: 18
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Moxa PD Frame

Many important devices used in today's industrial environment are still designed for use with an RS-232 interface. However, RS-232 is a point-to-point interface, and it imposes a distance limitation of only 15 meters between the device and the computer. To overcome these limitations, many users employ RS-232 to RS-422/485 converters, allowing RS-232 devices to connect to an industrial RS-422 or RS-485 network and transmit data over distances up to 1.2 km.

TCC-100/100I is an isolated RS-232 to RS-422/485 converter designed for users who need an industrial grade interface conversion product to extend RS-232 transmission distance and increase networking capability. Its superior industrial application design, which includes DIN-Rail mounting, terminal block wiring, external terminal block power, and optical isolation for system protection, makes TCC-100/100I suitable for use in critical industrial environments. Simply put, your RS-232 devices can be used as part of an industrial RS-422/485 network, but without any hardware or software changes.

ADDC™ (Automatic Data Direction Control)
ADDC™, a MOXA leading technology, uses a clever hardware solution to take care of the RS-485 data flow control problem. The RS-485 standard originally used half-duplex communication and handshaking signals such as RTS/CTS to control the direction of data flow. The TCC-100/100I converter uses embedded ADDC™ technology, a hardware data flow solution, to automatically sense and control data direction, making the handshaking signal method obsolete.

Isolation Protection
MOXA 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 on the other side. In this way, the two electrical circuits are completely isolated from each other, limiting the damage that could otherwise be caused by power surges in the electrical signal.

Auto Baud Rate Detection
TCC-100/100I incorporates a method for automatically detecting the serial signal baud rate by hardware. This is an extremely convenient feature for the user. Even if a device's baud rate is changed, the signal will still be transmitted through the RS-232 to RS-422/488 converter without problem.

RTS/CTS RS-422 Handshaking Signal
TCC-100/100I provides an RS-422 handshaking signal support. The RTS and CTS signals provide an RS-422 handshaking signal, reducing the chance of data error.

  • RS-232 to RS-422 conversion with RTS/CTS support
  • RS-232 to 2/4-wire RS-485 conversion
  • 2 KV Isolation Protection for both RS-422/485 signals and power (TCC-100I)
  • Wall and DIN-Rail mountable
  • Plug-in screw terminal Block for easy RS-422/485 wiring
  • PWR, Tx, and Rx LEDs
  • 16 KV ESD surge protection
  • Extended Operating Temperature range of -20 to 60°C
Serial Communication
RS-232 Signal
Supports TxD, RxD, DTR, DSR, RTS, CTS, DCD, GND
Female DB9 connector
RS-422/485 Signal
Supports RS-422, 4/2-wire RS-485 (DIP Switch selectable)
Supports 4-wire RS-422, up to 10 nodes, 1.2 km with RTS, CTS
Supports 4-wire RS-485, up to 32 nodes, 1.2 km
Supports 2-wire RS-485, up to 32 nodes, 1.2 km
RS-422/485 Data Direction Control
Baud Rate
50 bps to 230.4 Kbps
Surge protection
2 KV (TCC-100I), Power/Signal
Operating Temperature
-20 to 60°C (-4 to 142°F)
Storage Temperature
-20 to 85°C (-4 to 185°F)
5 to 95% RH
Power Consumption
Input Power Voltage
External Power 12-30 VDC, Terminal Block
Reverse Power Protection
Protects against V+/V- reversal
Over Current Protection
Protects against 2 signals shorted together: 1.1A
Power Consumption
TCC-100:  3.4W, 286 mA at 12V (max.)
TCC-100I: 4.68W, 390 mA at 12V (max.)
Dimensions (W x D x H)
67 x 100 x 22 mm
90 x 100 x 22 mm (including DIN-Rail Mounting Kit)
Plug-in screw terminal block
#22 to #16 AWG
Black Paint
148 ± 5g
Regulatory Approvals
CE, FCC (Class B)
Ordering Information
RS-232 to RS-422/485 Converter with Optical Isolation
All items include:
  • DIN-Rail Mounting Kit (DK35A)
  • User's Manual
  • Additional Information

    Pin Assignments




    Isolation Block Diagram


    Power Requirements
    Power Consumption TCC-100/100-T: 85 mA @ 12 V 
    TCC-100I/100I-T: 150 mA @ 12 V
    Input Voltage 12 to 48 VDC
    Voltage Reversal Protection Protects against V+/V- reversal
    Source of Input Power Power input jack
    Over Current Protection Protects against two signals shorted together
    RS-232 Side
    Signals TxD, RxD, RTS, CTS, GND
    Connector DB9 female
    RS-422/485 Side
    Signals (interface selected by DIP switch)
    RS-422: TxD+, TxD-, RxD+, RxD-, RTS, CTS, GND
    RS-485-4w: TxD+, TxD-, RxD+, RxD-, GND
    RS-485-2w: Data+, Data-, GND
    Connector Terminal Block
    RS-485 Data Direction Control ADDC® (automatic data direction control)
    Environmental Limits
    Operating Temperature Standard Models: -20 to 60°C (-4 to 140°F) 
    Wide Temp. Models: -40 to 85°C (-40 to 185°F)
    Storage Temperature -40 to 85°C (-40 to 185°F)
    Ambient Relative Humidity 5 to 95% (non-condensing)
    MTBF (mean time between failures)
    Time 3,017,857 hrs
    Database MIL-HDBK-217F
    Physical Characteristics
    Weight 148 ± 5 g
    Dimensions 67 x 100.4 x 22 mm (2.64 x 3.93 x 0.87 in)
    Housing Aluminum
    Standards and Certifications
    EMI FCC Part 15 Subpart B Class B
    Safety UL 60950-1
    EMS IEC 61000-4-2 (ESD) Level 2,
    IEC 61000-4-3 (RS) Level 2,
    IEC 61000-4-4 (EFT) Level 2,
    IEC 61000-4-5 (Surge) Level 2,
    IEC 61000-4-6 (CS) Level 2,
    IEC 61000-4-8 (SFMF) Level 1
    Green Product RoHS, CRoHS, WEEE
    Serial Communication
    ESD Protection 15 KV
    Optical Isolation 2 KV (TCC-100I/100I-T)
    Baudrate 50 bps to 921.6 Kbps
    Warranty Period 5 years
    Details See
    Stock: 11
    Stock: 4347
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