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NPort 1220
USB
Compliant with USB 1.1, 1.0
USB 2.0 backwards compatible
Connector USB type B
Speed Full speed 12 Mbps
Serial
No. of Ports 2
Interface 4-wire RS-422: TxD+/-, RxD+/-, GND
4-wire RS-485: TxD+/-, RxD+/-, GND
2-wire RS-485: Data+, Data-, GND
Connector Terminal Block
FIFO 128 bytes
Serial line protection 16 KV ESD for all signals
Serial Communication Parameters
Parity None, Even, Odd
Data bits 7, 8
Stop bit 1, 2
RS-485 Data Direction ADDC™ (Auto Data Direction Control)
Speed 600 to 115.2 Kbps
Power Requirements
Power Input 12 to 48 VDC (external) or 5 VDC (Bus power)
Power Consumption BUS: 140 mA @ 5 VDC
Ext. PWR: 306 mA @ 12 VDC
Mechanical Specifications
Material ABS
Gross Weight
215±5 g (0.48 lb)
Environmental
Operating Temperature 0 to 55°C (32 to 131°F)
Storage Temperature -20 to 85°C (-4 to 185°F)
Operating Humidity 5 to 95% RH
Agency Approvals
EMC FCC (class B), CE (Class B)
Safety UL, CUL, TÜV
Warranty
5 years
NPort 1220/1240 USB-to-Serial Hub User’s Manual
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