4-20mA Analog Output Module3 Channel Current Output Module MODBUS Communication 3AO

First, the product overview
-3 DC type 4-20mA current output
- RS485 MODBUS RTU standard communication, can be networked with configuration software, PLC, industrial touch screen, etc.
- with communication status indicator
-Communication circuit adopts lightning protection and anti-interference design
- Widely used for signal acquisition and control of industrial field devices

Second, the main parameters
- Analog output channel 3 way
- Analog output range DC type 4-20mA
- Analog output accuracy ±0.03mA
- Maximum output load 10502 (247 power supply)
- Operating temperature range -20~70°C
-External power supply DC9W~30V/2W
-Isolation protection 1500VDC
- Mounting method standard DIN rail mounting or screw mounting
-Dimensions size 125×73×35mm

Third, the interface definition
AVcc: external power input positive terminal
AGnd: analog ground, connected to the external power input negative terminal
Iout1: positive output channel 1 positive terminal
AGnd: Analog ground, connected to the negative terminal of the current output
Iout2: positive terminal of current output channel 2
AGnd: analog ground, connected to the negative terminal of the current output
Iout3: positive terminal of current output channel 3
AGnd: analog ground, connected to the negative terminal of the current output
485B: RS485 signal B-
485A: RS485 signal A+

Fourth,Analog output schematic

Fifth, the upper machine debugging instructions
This module provides a debugging software to implement the function debugging and parameter setting of the module. Please follow the steps below:
-Connecting computers and modules using RS485 converters
- Connect the 12V or 24V external power supply to the module and power it on. To avoid unnecessary damage, please check whether the positive and negative terminals of the power supply are connected correctly before powering on.
- Open the debugging software, select the corresponding module model, enter the function debugging or parameter setting interface
- Set the correct communication parameters and open the communication port
-·Select the appropriate settings, acquisition and control options

Sixth, RS485 networking diagram