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MOXA CI-134-DB9M ISA serial board


The CI-134 series ISA boards come with 4 independent RS-422/485 serial ports for connecting data acquisition equipment and other serial devices to a PC. Connect your devices over longer distances up to 1.2 km (4000 ft) and ensure greater reliability in industrial environments with on-board surge protection and electrical isolation (available with some models). Enjoy greater versatility by using point-to-point full duplex connections, or set up a half duplex RS-485 multi-drop network.




  • 4 X RS-422/485 Port ISA Board with DB9 male cable
  • 0 to 55°C operating temperature
  • Input power 5V DC, 0.45A
  • RS-485 data direction control with ADDC® or by RTS
  • 921.6 kbps maximum baudrate for super fast data transmission
  • 16-byte FIFO and on-chip hardware flow control
  • Surge protection and electrical isolation available
  • Built-in termination resistors
Multiport Serial Boards : Serial Interface
Comm. Controller 16C550C or compatible x 4
Number of Ports 4
Bus interface 16-bit ISA
Serial Standards RS-422/485
Connector DB37 female
Baudrate 50 bps to 921.6 kbps
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control on-chip hardware flow control
Data Bits 5, 6, 7, 8
FIFO 16-byte
Multiport Serial Boards : Serial Software Features
Windows Drivers Windows 95/98/ME/NT/2000, Windows XP/2003/Vista/2008/7/8/8.1 (x86/x64), Windows 2008 R2/2012/2012 R2 (x64), Windows 3.x, DOS, Windows Embedded CE 5.0/6.0, Windows XP Embedded
Linux Drivers Linux 2.4.x, 2.6.x, 3.x
UNIX Drivers QNX 6, SCO OpenServer, UnixWare 7, Solaris 10, FreeBSD
Multiport Serial Boards : Power Requirements
Power requirement 450 mA @ 5 VDC
Multiport Serial Boards : General
MTBF 424,655 hrs
Multiport Serial Boards : Physical Characteristics
Dimensions 85 x 160 mm (3.35 x 6.30 in)
Standards and Certifications EMC: EN 55022/24, EMS: IEC 61000-4-2; ESD: Contact: 8 kV; Air: 15 kV; IEC 61000-4-3 RS: 80 MHz to 1 GHz: 10 V/m; IEC 61000-4-4 EFT: Signal: 2 kV
Storage Temperature -20 to 85°C (-4 to 185°F)
Operation Humidity 5 to 95% (non-condensing)