|Place of Origin:||Sichuan, CHINA|
|Certification:||CE FCC RoHs|
|Minimum Order Quantity:||1PCS|
|Packaging Details:||270*180*55mm CARTON PACKAGE|
|Delivery Time:||1 WEEK|
|Payment Terms:||L/C, T/T, Western Union|
|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|
LTE 4 20 mA Controller,
4 20 MA Controller RS485,
4G ROUTER GPS MODEM
LTE Module 4 20 mA Controller RS485 Modbus Server 4G ROUTER GPS MODEM
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
|Number of Interface||4||2|
|Satandard||4*AI 2*GND||2*AO 2*GND|
|Detection / Output Range||4~20mA||4~20mA|
|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|
|SHELL||Galvanized Steel Sheet|
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.
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.
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)
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.
RS485 Automatic Acquisition
Virtual Serial Port
|Configuration Software Docking||√|