Allen Bradley 1746-NI16I 是一款模擬輸入模塊，具有16位分辨率和16個(gè)輸入通道，屬于-20至20mA的電壓類別。
該模塊的背板電流為125mA（5伏時(shí)）和75mA（24伏時(shí)），背板功耗最大為2.425瓦（0伏直流時(shí)為625.5瓦，1伏直流時(shí)為8.24瓦），相對(duì)濕度為5%至95%，無(wú)冷凝，工作溫度范圍為-25至60攝氏度，非工作溫度范圍在-40至85攝氏度之間，輸入阻抗為249，其模擬公共和任何輸入端子之間的最大電壓輸入為±8伏，最大電流輸入為±30mA，模塊的散熱為2.43瓦。
模擬輸入模塊是一款將遠(yuǎn)程現(xiàn)場(chǎng)的模擬量信號(hào)采集至計(jì)算機(jī)的設(shè)備。
模擬輸入模塊的利用RS-485總線作為數(shù)據(jù)通信線路，提供模擬量轉(zhuǎn)485功能，能夠同時(shí)將模擬量輸入至模塊，并通過(guò)RS-485總線傳輸至計(jì)算機(jī)。由于采用RS-485接口作為通信接口，其能夠多個(gè)模塊組合傳輸更多路數(shù)模擬量信號(hào)，并且能夠在485線路上分散配置，采用地址碼進(jìn)行區(qū)分，可以直接接入MODBUS RTU協(xié)議的組態(tài)軟件。

1746-NI16I

The Allen Bradley 1746-NI16I is an analog input module with 16-bit resolution and 16 input channels in the voltage category of -20 to 20mA.
The module has a backplane current of 125mA (5 volts) and 75mA (24 volts), a backplane power consumption of up to 2.425 watts (625.5 watts at 0 volts DC, 8.24 watts at 1 volts DC), a relative humidity of 5% to 95%, no condensation, and an operating temperature range of -25 to 60 degrees Celsius. The non-operating temperature range is between -40 and 85 degrees Celsius, the input impedance is 249, the maximum voltage input between the analog common and any input terminal is ±8 volts, the maximum current input is ±30mA, and the module’s heat dissipation is 2.43 watts.
Analog input module is a device that collects analog signals from remote field to computer.
The analog input module uses RS-485 bus as a data communication line to provide analog to 485 function, which can simultaneously input analog to the module and transmit it to the computer through the RS-485 bus. As the RS-485 interface is used as the communication interface, it can combine multiple modules to transmit more analog signals, and can be distributed on the 485 line, using the address code to distinguish, and can directly access the configuration software of MODBUS RTU protocol.

1746-NI16I