General Assist Technical Reference
X-Gate Multigateway
Network access, USB recovery, firmware, backup/restore and BMS protocol configuration
Purpose: This article explains how to access, configure, back up, restore and enable supported communication protocols on the X-Gate Multigateway.
Important: Factory reset and emergency USB commands can remove configuration data. Create a backup before making major changes wherever possible.
Supported functions
| Function / Protocol | Supported |
|---|---|
| Modbus TCP/IP | Yes |
| SNMP v2c | Yes |
| BACnet MSTP | Yes |
| BACnet IP | Yes |
| Web Server | Yes |
| Email notification | Yes |
| Data logging | Yes |
1. Default network details
| Setting | Default value |
|---|---|
| IP address | 192.168.2.101 |
| Net mask | 255.255.255.0 |
| Network | 192.168.2.0 |
| Default gateway | 192.168.2.1 |
Set the PC Ethernet adapter to an address in the same range, for example 192.168.2.xxx.
Access the web interface
- Connect the PC to the X-Gate ETH2 port using Ethernet.
- Open a web browser.
- Browse to http://192.168.2.101/.
- If a browser security warning appears, select Advanced, then proceed to the address.
- Log in with the required username and password.
Login lockout: After three incorrect password attempts, login is locked for 10 minutes.
Main menu
- From Network overview, select the Multigateway node.
- Open Main Menu.
- Adjust the required parameters or configuration options.
Change network configuration
- Log in and select the Multigateway node.
- Go to Others.
- Set IP1 IP Address Mode to either Static IP or DHCP.
- Reboot the Multigateway.
Important: Network configuration changes only take effect after reboot.
2. USB configuration and emergency recovery
USB configuration is useful when the web interface cannot be accessed or when changing the gateway to DHCP.
USB requirements
- USB stick formatted as FAT or FAT32.
- Text editor such as Notepad.
- Optional firmware file named exactly mgtw.bin.
Enable DHCP using USB
- Power up the Multigateway.
- Create an empty file named node_info.txt in the root of the USB stick.
- Insert the USB stick into the Multigateway and wait approximately 10 seconds.
- Remove the USB stick and open node_info.txt on a PC.
- Add the following command at the end of the file:
[node_cmd]
EnableDHCP=1
- Save the file and reinsert the USB stick.
- Wait approximately 10 seconds. If firmware is also being updated, allow approximately 60 seconds.
- The Multigateway restarts in DHCP mode.
- Remove the USB stick, reopen node_info.txt, and read the newly assigned IP address.
- Use the new IP address to access the web interface.
Read the current network configuration without web access
- Create an empty node_info.txt file on a FAT/FAT32 USB stick.
- Insert it into the Multigateway and wait approximately 5 seconds.
- Remove the USB stick and open the file on a PC.
The file can report the current IP address, DHCP/static status, MAC address, application version, Node ID and CAN baud rate.
Emergency USB commands
| Command | Function |
|---|---|
| EnableDHCP=1 | Enable DHCP |
| EnableDHCP=0 | Disable DHCP and use static configuration |
| StaticIP_Address=192.168.2.101 | Set static IP address |
| StaticIP_Gateway=192.168.2.1 | Set static gateway |
| StaticIP_NetMask=255.255.255.0 | Set static net mask |
| StaticIP_Network=192.168.2.0 | Set static network |
| StaticIP_DNS=0.0.0.0 | Set static DNS, or disable DNS with 0.0.0.0 |
| ResetToOEM=1 | Reset to OEM factory defaults |
| ResetToFactory=1 | Reset to Danfoss factory defaults |
| LocalWebServerFilter=255.255.255.255 | Allow any IP to connect to the web server |
| EnableCloud=1 | Enable cloud registration |
Factory reset warning: A reset can delete all device data and may include OEM factory settings. Use only when required.
3. Time, NTP and time zone
The Multigateway does not have an internal real-time clock, so date and time values are lost after reboot or power loss.
- Go to Settings and configure the NTP Server.
- Select the correct time zone for automatic daylight-saving adjustment.
Correct time is required for alarm logging, historical data and datalogging.
4. Firmware updates
Web interface
- Log in with the appropriate access level.
- Go to Settings > Update.
- Select the firmware file and choose Update.
USB update
- Format a USB stick as FAT/FAT32.
- Place the firmware in the root directory and rename it exactly mgtw.bin.
- Insert the USB stick and power-cycle the Multigateway.
- Allow several minutes for the update to complete.
USB firmware requirement: The firmware file must be named mgtw.bin.
Cloud updates
- If cloud access is enabled, the gateway checks for updates approximately hourly and at startup.
- Firmware may download automatically.
- Installation must still be started manually from the web interface.
5. Backup and restore
Restore full configuration
- Log in and select the MGTW row.
- Select 000 Others > ADV Advanced options.
- Set advanced options to ON.
- Log out and log back in.
- Select the MGTW row > Backup/Restore.
- Choose Restore Full Configuration from File.
- Select the required .bkz file.
- Wait approximately 1 minute, then refresh the browser.
After completion, the Multigateway should display ID 111.
Download a backup
- Select the MGTW row.
- Open Backup / Restore.
- Select Start Backup Full Configuration.
- Save the downloaded backup file to the applicable unit programming folder.
Recommended naming format: backup_commessa_number_drive
Example: backup_191283_1
6. Third-party protocols
The Multigateway supports Modbus TCP, SNMP, BACnet IP and BACnet MSTP.
Parameter G04 Default access level for 3rd party controls which variables are visible to the field bus.
Enable Modbus TCP Slave
- Connect to the Multigateway in a browser and select the gateway.
- Open Parameter settings > Slave fieldbus.
- Set G01 Modbus TCP Slave to ON.
- Go to Stats and check CANbus TX and CANbus RX.
If the counters increase, communication is operating.
Enable SNMP
SNMP supports SNMP v2c, including traps.
- Open Parameter settings > Slave fieldbus.
- Set G02 SNMP v2c to ON.
- Download the MIB from Settings > Download MIB if required.
Enable BACnet
| BACnet type | Parameter |
|---|---|
| BACnet IP | G28 Enable BACnet IP |
| BACnet MSTP | G30 Enable BACnet MSTP |
Do not enable both BACnet modes: BACnet IP and BACnet MSTP cannot operate at the same time.
BACnet IP default port: 0xBAC0.
EDE file for BMS technicians
The Engineering Data Exchange (EDE) file can provide data-point types, addresses, object names, object instances and presentation information.
Typical objects may include device object, analog input, analog value, system on/off, cooling setpoint, control sensor value, compressor demand, suction pressure and discharge pressure.
BMS technicians may use YABE software to perform BACnet communication testing.
7. Troubleshooting
| Issue | Checks |
|---|---|
| Cannot access web interface | PC in 192.168.2.xxx range; cable connected to ETH2; use http://192.168.2.101/; check IP filtering; use USB to read current IP. |
| Login locked | Wait 10 minutes after three incorrect password attempts. |
| Network changes not active | Reboot the Multigateway after changing IP/DHCP settings. |
| BACnet not working | Confirm only BACnet IP or BACnet MSTP is enabled, not both. |
| Modbus not confirmed | Check Stats and confirm CANbus TX/RX counters are increasing. |
8. Internal commissioning notes
- USB configuration requires node_info.txt in the USB root directory.
- USB firmware updates require the exact filename mgtw.bin.
- Web-based firmware updates may use other filenames.
- Confirm NTP and time zone settings after commissioning.
- Create and file a full configuration backup after final commissioning.
Access credentials stated in the source procedure:
User: admin
Password: PASS
User: admin
Password: PASS
Use these procedures only on the applicable X-Gate Multigateway configuration and confirm project-specific network/security requirements before making changes.
