LTE Module 4 20 MA Controller RS485 Modbus Server 4G ROUTER GPS MODEM
1PCS
MOQ
USD65~68/PC
Price
LTE Module 4 20 MA Controller RS485 Modbus Server 4G ROUTER GPS MODEM
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Features
Basic Infomation
Place of Origin: Sichuan, CHINA
Brand Name: IOTROUTER
Certification: CE FCC RoHs
Model Number: ZHC4661
High Light:

LTE 4 20 mA Controller

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4 20 MA Controller RS485

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4G ROUTER GPS MODEM

Payment & Shipping Terms
Packaging Details: 270*180*55mm CARTON PACKAGE
Delivery Time: 1 WEEK
Payment Terms: L/C, T/T, Western Union
Supply Ability: 50000PCS/MONTH
Specifications
Material: Galvanized Steel Sheet
Interface: RS485/4AI/2AO
Protocol: MODBUS TCP/RTU
Function: Point To Point Connection
Application: Iot Tracking
Working Voltage: 12V
Module Type: 4G LTE
OEM: Support
Module: Quectel
Product Name: LTE Module 4 20 MA Controller
Color: Black
Product Description

LTE Module 4 20 mA Controller RS485 Modbus Server 4G ROUTER GPS MODEM

 

  • Introduction​ of 4 20 mA Controller


ZHC4661 is an industrial-grade 4G RTU that provides 4 channels of AI, 2 channels of AO and 1 channel of RS485 interfaces, supports Modbus RTU/TCP adaptive, automatic acquisition and active reporting, 4-20mA analog control acquisition, automatic calibration threshold reporting, support one-to-one, many-to-one connection, which can be widely used in power systems.


Parameters of 4 20 mA Controller

 

Analog Quantity AI AO
Number of Interface 4 2
Satandard 4*AI 2*GND 2*AO 2*GND
Detection / Output Range 4~20mA 4~20mA
Serial Port
Standard RS485 (A / B)
Baud Rate 600~921600 bps
Data Bit 8, 9
Stop Bit 0.5, 1, 1.5, 2
Parity Bit NONE EVEN ODD
Mechanical Structure
SIZE 93*69*25mm(L*W*H)
SHELL Galvanized Steel Sheet
Work TEMP. -40℃~85℃
Storage TEMP. -40℃~125℃
Work Humidity 5~95%
Storage Humidity 1~95%

 
 
Function of 4 20 mA Controller ZHC4661


The signal current of general instruments is 4-20mA, which means that the minimum current is 4mA and the maximum current is 20mA. When transmitting a signal, consider that there is also resistance on the wire. If voltage transmission is used, a certain voltage drop will be generated on the wire, and a certain error will occur in the signal at the receiving end. Therefore, the current signal is generally used as the standard transmission of the transmitter.
ZHC4661 is a remote control product that supports analog follow and control acquisition.
Support 4 analog inputs, default current detection.
Support 2 analog output, default current output.
Support analog follow and control acquisition.

 

Operating Mode:


Host mode: In this mode, the server can send Modbus data (the address is the product address) to communicate with the product. If the sent data cannot be identified by the product, it will forward the data to the RS485 bus where the product is located; Devices on the same RS485 bus can also send Modbus data (the address is the product address) to communicate with the product. If the data cannot be identified by the product, it will forward such data to the server.
Slave mode: In this mode, the server can send Modbus data (the address is the product address) to communicate with the product. If the sent data cannot be identified by the product, the data will be directly discarded and will not be forwarded; Devices on the same RS485 bus can also send Modbus data (the address is the product address) to communicate with the product. If the data cannot be identified by the product, such data will be directly discarded and no longer forwarded.

 

Special Functions:


Serial Heartbeat
Function description: The serial port sends out the specified data regularly
Serial port heartbeat 1~serial heartbeat 4 register address: 40789~40828 (0x0314~0x033B)
Support function codes: 03 (read holding registers), 10 (write multiple holding registers)
Default value: all 0x00
Register package function
Function description: "Registration package" is used in the server to identify device data. The registration package supports two types: "connect to send" and "data carrying". "Connect to send" means to send a registration package when the device establishes a connection with the server. "Data carrying" means that the device carries the registration package before the data and sends it to the server.
Heartbeat packet function
Function description: "Heartbeat package" is used to maintain a long connection between the server and the device
Default value: 0x0001
Heartbeat packet holding register address: 41379~41391 (0x0562~0x56E)

 

 

FAQ

Q1. How can we know the product quality?
A1: We have professional QA and QC teams, 100% quality inspection is performed before the goods out of the factory.
Q2:Can I have a small order? what's ur MOQ?
A2: Welcome to order sample to test and check quality. MOQ is 1 for normal item.
Q3: If I am not familiar with the operation, do you have a manual to help?
A3: Our Software, User Manual and Programme case can be downloaded freely on our official website, or you could consult the sales for those documents.Meantime, we have engineers team who could do help on your technician problem and give you useful solution.
Q4: Does your factory have the design and development capabilities, can you factory accept customized products?
A4: Our R&D department are well experienced in the IoT industry, We can make customized products especially for you.



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ZHC4661

RS485 Modbus

RS485 Automatic Acquisition

Virtual Serial Port

Connfiguration Software

Threshold Report

Configuration Software Docking

Modbus RTU/TCP

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Get in touch with us
Contact Person : Miss. Agnes
Tel : 8618982006591
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