Moxa’s serial-to-serial media converters can convert between RS-232, RS-422, and RS-485, which avoids compatibility issues that are often encountered when communicating between different serial interfaces.

Port-powered RS-232 to RS-422/485 converter with 15 kV serial ESD protection and terminal block on the RS-422/485 side

Serial Interface
Connector
– Terminal block
No. of Ports
– 2
Serial Standards
– RS-232
– RS-422
– RS-485
RS-485 Data Direction Control
– ADDC (automatic data direction control)
Terminator for RS-485
– N/A, 120 ohms, 120 kilo-ohms
Baudrate
– 300 bps to 115.2 kbps

Serial Signals
RS-422
– Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w
– Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w
– Data+, Data-, GND
RS-232
– TxD, RxD, GND

Power Parameters
Input Current
– 30 mA @ 5 to 12 VDC
Input Voltage
– 5 to 12 VDC
No. of Power Inputs
– 1
Overload Current Protection
– Supported
Source of Input Power
– Power input jack

Physical Characteristics
Housing
– Plastic top cover, metal bottom plate
IP Rating
– IP30
Dimensions
– 42 x 80 x 22 mm (1.65 x 3.15 x 0.87 in)
Weight
– 50 g (0.11 lb)
Installation
– Desktop

Environmental Limits
Operating Temperature
– 0 to 60°C (32 to 140°F)
Storage Temperature (package included)
– -20 to 75°C (-4 to 167°F)
Ambient Relative Humidity
– 5 to 95% (non-condensing)

Standards and Certifications
EMC
– EN 55032/35
EMI
– CISPR 32, FCC Part 15B Class A
EMS
– IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
– IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m
– IEC 61000-4-4 EFT: Power: 1 kV; Signal: 0.5 kV
– IEC 61000-4-5 Surge: Power: 1 kV
– IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m; Signal: 3 V/m
– IEC 61000-4-8 PFMF
Environmental Testing
– IEC 60068-2-1
– IEC 60068-2-3
Safety
– UL 60950-1
Vibration
– IEC 60068-2-6

MTBF
Time
– 2,781,161 hrs
Standards
– Telcordia (Bellcore), GB