USR-G785 is an industrial wireless data transmission terminal with high stability and anti-interference. It can realize the data transparent transmission function. The two-way data transmission from serial port to network server can be easily realized by setting simple AT commands.
USR-G785-E is a product developed for serial devices and network servers to transmit data to each other. With simple AT instructions, it is easy to use this product to realize two-way data transparent transmission from serial port to network.
Support TCP Client and UDP Client
Support register package and heartbeat package
Support setting parameters by SMS
Support net transparent transmission mode and UDC mode
Support AT commands
Support RFC2217 similar function
Support remote management
All-terminal installation, 485 isolated power supply, stronger EMC protection.
The command port and data port are independent of each other
Structure function diagram
The following diagram is a block diagram of the function of the modem.
All-terminal installation, lightning protection
Power/interface high current protection
485 surge proof 1KV
485 power isolation
Over-current Protection of Power Supply
Electrical fast pulse group EFT
Ensure that the device hardware is not damaged when the instantaneous large current (such as lightning strike, power switch, etc.) occurs in the circuit
ESD electrostatic protection
Prevent electrostatic damage to device, such as: dust electrostatic, electric power environment arc
Hardware and software watchdogs
Well- designed external watchdog circuit, 24 hours without downtime, stable operation
Network transparent transmission mode
Serial devices can send data to designated server through modem when work at this mode, modem can also forward server data to serial devices.
4G modem USR-G785 supports two sockets, which are independent of each other.
In this mode, the serial port device can send data to the specified server on the network through this modem. The modem can also accept data from the server and forward the information to the serial port device.
Users do not need to pay attention to the data conversion process between serial port data and network packets, only through simple parameter settings, data transparent communication between serial port devices and network servers can be achieved.
In this mode, the user's terminal device can send the request data to the specified https server through this modem, then the modem receives the data from the https server, parses the data and sends the results to the serial port device.
Users do not need to pay attention to the data conversion process between serial port data and network packets, only through simple parameter settings, can realize the serial port device to https server data request.
Support query and set parameters by serial port AT commands and network AT commands
Register package mechanism
When USR-G785 works at TCP Client mode, it will automatically send register package when connection establish. Registration data can be IMEI codes, ICCID codes and custom registration data.
USR-G785 support network heartbeat package and serial port heartbeat package.
Network heartbeat packets keep the server active by sending heartbeat packets continuously to maintain a normal connection with the server.
The serial heartbeat packet keeps the serial device in an active state and actively grabs the sensor data that cannot be pushed actively.
Images of industrial serial to 2G/3G/4G LTE modem USR-G785-E
Standard Frequency Band
Class 3 (23dBm±2dB)
Class 3 (23dBm±2dB)
Class 3 (24dBm+1/-3dB)
Class 4 (33dBm±2dB)
Class 1 (30dBm±2dB)
Maximum support for non-CA CAT 4
Supporting 1.4~20MHz RF bandwidth
Downlink support for multi-user MIMO
TDD: maximum up 35 Mbps, maximum down 130 Mbps
FDD: Maximum upstream 50 Mbps, maximum downstream 150 Mbps
Supports 3GPP R8 dc-hspa +
Supports 16-qam, 64_QAM and QPSK modulation
3GPP R6 CAT6 HSUPA: maximum uplink rate 5.76Mbps
3GPP R8 CAT24 dc-hspa + : the maximum downlink rate is 42Mbps
R99: CSD transmission rate: 9.6 KBPS,14.4 KBPS
GPRS: supports GPRS multi-slot class 12(default 12)
Coding formats: cs-1 / cs-1 / cs-3 and cs-4
Maximum 4 RX slots per frame
Support EDGE multi-slot class 12(default 12)
RS232：2400bps - 115200bps
RS485：2400bps - 115200bps
Average 60ma-86ma Max: 175mA 12V
Transparent transmission mode, UDC mode.
Max. TCP Connection Number
Serial AT command，net AT command，message AT command