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2-Port RS-422/485 PC/104 Module with Isolation

Product Page @ Moxa Site MOXA Major Lines
Mfg Part Number:  CA-132I  
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Price: $208.65 + Free Shipping
In Stock: 2
No Sales Tax except these states
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Moxa PD Frame

CA-132/132I are 2-port RS-422/485 PC/104 serial boards that meet the embedded PC standard. These boards work with PC/104 CPU boards that accept the PC/104 expansion interface, and comes with 2 RJ45 ports. DB9 and DB25 connection cables are available as options to meet users' varied connection requirements.


  • Embedded industrial machines
  • SCADA systems
  • POS devices
  • Postal machines
  • Kiosks
  • Lottery machines
  • Remote serial device control
  • 2 RS-422/485 serial interface ports
  • On-chip hardware flow control
  • Built-in 15 KV ESD Surge Protection
  • Jumper and DIP Switch selectable IRQ, I/O settings
  • Onboard Tx, Rx LED indicators for each port
  • Supports RS-485 ADDC™ (Automatic Data Direction Control) intelligence
  • Built-in termination resistors enabled by DIP switch
  • Works perfectly with all major Operating Systems
I/O controller
16C550C or compatible x 2
Connector type
8-pin RJ45
PC/104 ISA bus (Ver. 2.4)
No. of ports
RS-422 Signals
TxD+, TxD-, RxD+, RxD-, GND
RS-485 (4-wire)
TxD+, TxD-, RxD+, RxD-, GND
RS-485 (2-wire)
Data+, Data-, GND
LED Indicators
Built-in TX, RX indicators for each port
50 bps to 230.4 Kbps
Max. No. of ports
8 (4 boards)
None, even, odd, space, mark
Data bits
5, 6, 7, 8
Stop bits
1, 1.5, 2
Shared IRQ for all ports (includes IRQ 3, 4, 5, 6, 7, 9, 10, 11, 12, 15)
64 bytes
DIP Switches
For IO-Base address, Interrupt vector
Operating Systems
Driver support
Windows 2000/XP/2003, Windows NT, Windows 95/98/ME, DOS, FreeBSD, Linux Base, QNX 4
Power and Environment
Operating Temp.
0 to 55°C
Operating Humidity
5 to 95% RH
Storage Temp.
-20 to 85°C
Surge Protection
15 KV ESD protection
Optical Isolation
2 KV Isolation (CA-132I)
Dimensions (W x D)
96 x 90 mm
Regulatory Approvals
FCC Class A, CE
Ordering Information
PC/104 bus, 2-port RS-422/485 Board
PC/104 bus, 2-port RS-422/485 board with optical isolation
All items include
  • MOXA software CD-ROM
  • User's Manual
  • Optional Accesories
    8-pin RJ45 to male DB9, 150 cm cable
    8-pin RJ45 to female DB9, 150 cm cable
    8-pin RJ45 to male DB25, 150 cm cable
    8-pin RJ45 to female DB25, 150 cm cable


    Power Requirements
    Power Consumption CA-132: 155 mA @ +5 V 
    CA-132I: 190 mA @ +5 V
    Serial Communication Parameters
    Data Bits 5, 6, 7, 8
    Parity None, Even, Odd, Space, Mark
    Stop Bits 1, 1.5, 2
    FIFO 64 bytes
    IRQ 3, 4, 5, 6, 7, 9, 10, 11, 12, 15 (shared for all ports)
    Connector 20-pin box header
    DIP Switches I/O base address, interrupt vector
    Bus PC/104 bus
    LED Indicators Built-in TX, RX LEDs for each port
    Comm. Controller 16C550C or compatible x 2
    Baudrate 50 bps to 921.6 Kbps
    Environmental Limits
    Operating Temperature Standard Models: 0 to 55°C (32 to 131°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 536,288 hrs
    Database Telcordia (Bellcore), GB
    Physical Characteristics
    Dimensions 90 x 96 mm (3.54 x 3.78 in)
    Serial Interface
    Serial Standards RS-422/485
    Number of Ports 2
    Max. No. of Boards per PC 4
    Serial Line Protection
    ESD Protection 15 KV on the board
    Optical Isolation 2 KV (CA-132I only)
    Serial Signals
    RS-485-4w TxD+(B), TxD-(A), RxD+(B), RxD-(A), GND
    RS-485-2w Data+(B), Data-(A), GND
    RS-422 TxD+(B), TxD-(A), RxD+(B), RxD-(A), GND
    Standards and Certifications
    EMI EN 55022, EN 61000-3-2, EN 61000-3-3, FCC Part 15 Subpart B Class A
    EMS EN 55024, IEC 61000-6-2, IEC 61000-6-4, IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5, IEC 61000-4-6, IEC 61000-4-8, IEC 61000-4-11 (DIPS)
    Green Product RoHS, CRoHS, WEEE
    Driver Support
    Operating Systems Windows 9X/ME/NT/2000, Windows XP/2003 x86/x64, Windows CE 5.0/6.0, Windows XP Embedded, DOS, Linux 2.4, Linux 2.6 x86/x64, QNX 4/6
    Note Please refer to Moxa's website for the latest driver support information.
    Warranty Period 5 years
    Details See
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