Omron NT31 NT31C manual General Specifications, Communications Specifications RS-232C Interface

Using an RS-232C/RS-422A Convertor Unit Appendix C

Specifications

The general specifications and communications specifications of the convertor unit are shown below.

General Specifications

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% (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 with a 500 VDC megger
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	Conforms to JIS C0911 60 minutes in each of X, Y, and Z directions
Shock resistance	Conforms to JIS C0912 47m/s2, 3 times in each of X, Y, and Z directions

Communications Specifications

RS-232C Interface

Item	Specification
Communications speed	Max. 115.2k bps
Transmission distance	Max. 2 m
Connector	9-pin D-SUB connector (female)

RS-422A/485 Interface

Item	Specification
Communications speed	Max. 115.2k bps (depends on the RS-232C communications speed)
Transmission distance	Max. 500 m
Connector	8-terminal detachable terminal block, M3.0

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