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Using an RS-232C/RS-422A Adapter Appendix C
Specifications
The general specifications and communications specifications of the Adapter are shown below.
General Specifications
Communications Specifications
RS-232C Interface
RS-422A/485 Interface
DIP Switch Settings
The Adapter has 6 digits DIP switch for setting the RS-422A/485 communications conditions.
Before connecting the cable to the Adapter, make the DIP switch settings.
Item Specification
Dimensions 30 (W) × 114 (H) × 100.2 (D) mm: with the RS-422A terminal block cover closed
30 (W) × 114 (H) × 119.5 (D) mm: with the RS-422A terminal block cover open
Weight 200 g max.
Operating ambient temperature 0 to 55°C
Operating ambient humidity 10 to 90% RH (with no condensation)
Rated power supply voltage +5 V ± 10% (using pin No. 6 of the RS-232C connector)
Rated power supply current 150 mA max.
Rush current 0.8 A max.
Insulation resistance 20 MΩ or higher, measured between all RS-422A terminal signal lines collectively and
functional ground terminal at 500 VDC
Dielectric strength 1500 VAC for 1 minute between all RS-422A terminal signal lines collectively and
functional ground terminal
Leakage current: 10 mA max.
Operating environment No corrosive gases
Storage ambient temperature −20 to +75°C
Vibration resistance
10 to 57 Hz with 0.075-mm single amplitude and 57 to 150 Hz at 9.8 m/s
2
for 60 min-
utes each in X, Y, and Z directions
Shock resistance
147 m/s
2
3 times each in X,Y, and Z directions
Item Specification
Communications speed Max. 64k bps
Transmission distance Max. 2 m
Connector 9-pin D-SUB connector (female)
Item Specification
Communications speed Max. 64k bps (depends on the RS-232C communications speed)
Transmission distance Max. 500 m
Connector 8-terminal detachable terminal block, M3.0