Wireless Analog Output Module 4 Channels 4-20mA Signal Wireless Modbus RTU
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Wireless Analog Output Module 4 Channels 4-20mA Signal Wireless Modbus RTU
General Introduction LS-RAO04 Modbus RTU is a 4-ch wireless AO module, with 4 channels analog output, it is widely used to transmit sensor's 4-20mA or 0-5V analog signal. So your sensors can wireless connect with control center. We have types of different module to control different distance.
Wireless control 2km-3km by 1W RF Wireless control 5km by Lora Wireless control long distance, no limit by 4G module Link your sensor with PLC/HMI wirelessly Welcome to try!!!
Advantage of wireless solution - No wires to bury or maintain, no need to drill holes on wall - Reliable communication in all direction,any terrain, regardless of hills, walls, trees - Cost saving in installation and maintenance - Radio/Lora based, no need internet and monthly fee, full ownership of the system - 4G based, high speed, no distance limit Lensen Wireless RTU features - Portable device, DIN-rail mounting for easy installation - Isolated inputs - LEDs for power supply, communication, input, output status - Flexible networking, point to point or point to multipoints - DIP to change different modes - Different types of I/O, DI, DO, AI, AO are available - I/O expandable - Short delay time - Easy handing on RS485 network, support Modbus RTU protocol - Support on-line upgrade. Can configure by customer in setting mode
Modbus RTU communication and corresponding value Register types:
A. Hold register 1. Analog input value: 0x0008~0x000B 2. Analog output value: 0x0048~0x004B
B: How to read Hold register: can read 4 analog input or control 4 analog output at one time
Register control way
About value calculation Analog input Our analog module’s max measure range value is : 0X7FFF 1. Directly measure current and voltage Exact value=value you read/0x7FFF*max range For example: to read the 1st passage of module’s (with max range of 0-20mA) input value Register 0x0008(analog input of the 1st passage) Feedback: 0x3801 Current value: (0x3801/0x7FFF)*20mA=8.7509mA
2. To measure sensor’s value(4-20mA, 0-6 meter level sensor) If feedback value is less than 6554, level value is 0 If feedback value is bigger than 6554, level value=(value read-6554)/(32767-6554)*measure ranges For example: feedback value is 0X3801, then corresponding level value is: ((0X3801-6554)/26213)*6 meter=1.7815 meter
Analog output Analog module’s max measure range is: 0x7FFF Directly control output current and voltage Write register value=current or voltage value/measure range*0x7FFF For example: to control the 1st passage of analog module whose max measure range is 0-20mA Register 0x0048 (analog output of the 1st passage) To write register value:(8.75/20mA)*0X7FFF =14336=0x3800
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