MODBUS RTU RS485 - Current 0-20mA / 4-20ma to Modbus RTU RS485

ADM-4280-C 8AI Aquisition Module ADM-4280-C is an 8-channel 0~20mA/4-20mA analog signal data acquisition module, which can be widely used in the signal acquisition and monitoring of industrial field equipment. When I20, it means that the analog quantity is 0~20mA/4-20mA current input. The analog signal adopts single-ended input mode, and the communication interface adopts RS-485 interface, supports standard MODBUS-RTU protocol, and can be directly connected with configuration softre, PLC, DCS industrial control touch screen, etc. Product specifications : (1), analog input 1. Input channel: 8 single-ended inputs 2. Input range: I20: 0~20mA/4-20mA current signal 3. ADC resolution: 16Bit, reduced to 15Bit for use 4. Conversion rate: 10 times/sec (full channel) 5．Measurement accuracy: better than ±0.1% 6．Sampling resistance: 12 ohms/0.1% (current) (2), communication interface 1. Communication protocol: MODBUS-RTU protocol 2. Interface type: optically isolated RS-485 interface 3. Baud rate: 1200/2400/4800/9600/19200/38400/57600/115200 BPS 4．Parity bit: no parity, even parity, odd parity 5. Default parameters: 9600, N, 8, 1 (baud rate and parity bit can be modified) (3), system parameters 1. Module size: 104mm x 72mm x 26mm 2. Installation method: 35mm DIN rail installation 3. Working environment: Temperature: -10~60℃ Humidity: 0-95%, non-condensing 4. Working power supply: DC9~30V less than 1W module indicator definition 1. POWER: Power status indicator, alys on/power supply is normal 2. COMM: RS-485 interface communication indicator, flashing/module is sending and receiving data using default communication parameter. ========================= Power Adaptor NOT Included Softre and User Manual Download Link :