Moxa’s serial-to-serial media converters can convert between RS-232, RS-422 and RS-485, eliminating compatibility issues that often occur when communicating between different serial ports.

RS-422/485 converter/repeater

Serial interface
Connection
– terminal block
Number of connections
– 2
Serial standards
– RS-422
– RS-485
Baud rate
– 50 bps to 921.6 kbps (supports non-standardised baud rates)
Pull high/low resistor for RS-485
– 1 kilo-ohm, 150 kilo-ohms
RS-485 data direction control
– ADDC (automatic data direction control)
Terminating resistor for RS-485
– N/A, 120 ohms, 120 kilo-ohms

Serial signals
RS-422
– Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w
– Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w
– Data+, Data-, GND

Performance parameters
Input current
– 65 mA @ 12 VDC
Input voltage
– 12 to 48 VDC
Number of current inputs
– 1
Overload protection
– Supports
Power connection
– Terminal block (for DC models)
Current consumption
– 65 mA @ 12 VDC

Physical properties
Housing
– Metal
IP protection class
– IP30
Dimensions
– 67 x 100,4 x 22 mm (2.64 x 3.93 x 0.87 in)
Weight
– 148 g (0.33 lb)
Installation
– DIN rail mounting (with optional kit)
– Wall mounting

Ambient conditions
Operating temperature
– -20 to 60°C (-4 to 140°F)
Storage temperature (including packaging)
– -40 to 85°C (-40 to 185°F)
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 60068-2-2
– IEC 60068-2-3
Safety
– UL 60950-1
Vibration
– IEC 60068-2-6

MTBF
Time
– 1.949.025 hours
Standards
– Telcordia (Bellcore), GB