The MaxGate800 series is a powerful industrial edge computing Modbus gateway with powerful processing capabilities and high reliability. They combine many functions such as Ethernet switching, routing, remote access to RS-485 ports and much more. There are 4 models in the series, the main difference of which is the communication interface: MaxGate800, MaxGate800-W, MaxGate800-4G, MaxGate800-5G.
The gateway is based on a 4-core 64-bit ARM Cortex-A55 processor with a frequency of 2 GHz. The Debian10 software shell with a Linux kernel of at least 4.0 supports apt package manager, so the user can flexibly customize it to suit their requirements. The environment integrates: gcc, g++, Python and pre-installed standard libraries to make the work of developers easier.
Functionality of MaxGate800 gateways
Communication ports
- 8x Gigabit copper ports. Support for network protocols: LACP, VLAN, IGMP Snooping, SNMP, 802.1X, LLDP, RMON, including MW-Ring (v1/v2), ERPS, STP/RSTP reservation protocols.
- 2x SFP ports with DDM monitoring function (support for Gigabit SFP modules)
- 12x RS-485 serial ports
- 4x CAN ports
Protocol gateway function
MaxGate800 supports the processing of protocols such as Modbus and CAN.
Managing embedded I/O channels
Various field peripheral devices, sensors, lighting fixtures and actuators, buttons, and so on can be connected to MaxGate800 gateways. To implement this feature, the developers have built in I/O channels with the following configuration:
- 16 discrete input channels (DI)
- 8 transistor output channels (DO)
- 2 analog inputs (AI). 0-10V or 4-20mA range is selected via WEB interface
Interaction with input/output channels occurs via the Modbus TCP protocol. The gateway acts as a Modbus TCP server with standard port 502. For DI control, Modbus function 02 is used, for DO function: 01/05/0F, for AI - 04 function. The map of registers with commands is shown below:
| Channels | Modbus register 0x | Modbus function | Default state |
|---|---|---|---|
| DI1-DI16 | 0000-000F | 02 | 0 |
| DO1-DO8 | 0000-0007 | 01/05/0F | Off |
| AI1-AI2 | 0000-0001 | 04 | — |
Built-in MQTT broker/client
The software of the gateway has a built-in mosquito server/client, which allows you to integrate the gateway with cloud servers via the MQTT protocol.
Watchdog timer
The gateway has a built-in watchdog timer whose value is reset to 0 every 22 seconds. If for some reason it hangs and the watchdog timer is not reset within 44 seconds, the gateway will automatically reboot.
Link check function
This is a cellular modem connection test. In case the connection is not available for a certain period, the device will reboot the cellular module. This feature can be enabled and configured, including via the command line:
Multi-way gateway access
To configure and test the operation of the gateway, the following tools can be used:
- LPT port
- SSH
- Telnet
- Web interface
