JL-20T Industrial Networking Genie

JL-20T Industrial Networking Genie adopts an industrial grade design, providing remote data collection, transmission, and maintenance functions for industrial products such as controllers, collectors, industry data terminals, PLCs, and HMIs with serial ports. 

JL-20T Industrial Networking Genie is embedded with an industrial grade 4G LTE communication module, with one RS232 and one RS485 serial port each. It adopts terminal wiring, RS232 and RS485 can be used at the same time. It has a TYPE-C USB port to upgrade firmware, configure parameters and check debug log.

JL-20T supports connecting to at most three data centers at the same time. It supports connecting to mServer and transparent TCP/UDP server. It also has built in NTRIP protocol as a communication device for high-precision positioning transmission, and connects to NTRIP Caster to achieve high-precision positioning function.

JL-20T has built-in MODBUS RTU communication protocol and can communicate with industrial cloud platforms through standard MQTT protocol.  

There are three sub-models with different protocols support.

Figure 1: JL-20T Outlook -1

Figure 2: JL-20T Outlook -2

Basic Parameters
Power Supply: +5 ~ +36V wide range of voltage input
Power Connector: terminal
Network & Frequency: 
FDD-LTE B1/B3/B5/B8
TDD-LTE B34/B38/B39/B40/B41
Data Interface: RS232 and RS485 with wire connector
Working current:145 mA@+5V DC
Standby current: 40 mA@+5V DC
Temperature: -35ºC ~ +75ºC
Humidity: 95%@+40ºC
Dimension: 88*85*25mm (excluding antenna and handle)

Data Transmission
Adjustable baud rate on data interface 
Support standard TCP/IP protocol with both TCP and UDP 
Adjustable heart-beat interval and time-out value 
Support Address-IMEI Mapping to save wireless bandwidth 

Stability
Built-in soft/hard watch dog 
Built-in TCP/IP protocol stack 

Data Center
Support domain name 
Compatible with various data center software
Support connecting with cloud platform with MQTT protocol,with flexible compatibility
Support NTRIP protocol, including NTRIP Client and NTRIP Server

Configuration
Configurable via serial port
Configurable via USB
Support remote configuration

Device Protocols Support
Support MODBUS RTU protocol
Support S7-200 PPI protocol

  Working Mechanism

Below is the working mechanism of JL-20T MPRO.

JL-20T MPRO has RS232 and RS485 serial interface, RS485 is used to connect to user’s device, and RS232 is used to configure variables for data transmission and local data monitoring.

First, JL-20T MPRO connects with PLC or HMI via RS485 serial cable and connects with PC via RS232 serial cable.

Then, configure JL-20T MPRO with iGateCfg configuration software, and upload the configuration to IoT cloud platform. 

JL-20T MPRO connects into the Internet via 4G wireless network, and then establishes connection to IoT cloud platform. JL-20T MPRO  sends commands to devices and collects data in pre-defined time periods, and then transmits data to the cloud platform. PC at the monitor center uses web browser to access the cloud platform website, and check the data from devices. We can also use WeChat applet to check data, alarms,etc.

JL-20T MPRO connects to mServer as well. PC at the monitor center runs Vircom software that also connects to mServer. Send AT command to JL-20T MPRO via Vircom-mServer channel to stop MODBUS data transmission, then create a virtual serial port via Vircom, and map JL-20T MPRO to the virtual serial port at the PC; the programming software can then upload or download program via the virtual serial port. After program upload/download is complete, send AT command to JL-20T MPRO again to recover MODBUS data transmission.