User's Manual
Table Of Contents
- USR-G809 User Manual
- 1.Introduction
- 1.1.Overview
- 1.2.Features
- 1.3.Specification
- 1.4.Interface
- 1.5.Indicator
- 1.6.Dimensions
- 2.General Function
- 2.1.Web Interface
- 2.2.Hostname
- 2.3.User Password Settings
- 2.4.Reboot Timer
- 2.6.Reboot
- 2.7.Reload Button
- 3.Interface
- 3.1.WAN Interface
- 3.2.LAN Interface
- 3.3.Cellular Network Interface
- 3.4.WLAN Interface
- 3.5.VLAN
- 3.6.DIDO
- 4.Network
- 4.1.Network Switch
- 4.2.DHCP
- 4.3.Hostnames
- 4.4.Static Routes
- 4.5.Diagnostics
- 5.VPN
- 5.1.PPTP Client
- 5.2.L2TP Client
- 5.3.IPSec
- 5.4.OpenVPN
- 5.5.GRE
- 6.Firewall
- 6.1.General Settings
- 6.2.NAT
- 6.3.Traffic Rules
- 6.4.Access Restriction
- 7.Serial Port
- 7.1.Connecting Hardware
- 7.2.Serial Port Settings
- 7.3.Operation Mode
- 7.4.General Function
- Protocol description:
- 8.USR Cloud
- 8.1.Cloud Monitor
- 8.2.Add device
- 8.3.Network Status
- 8.4.Parameter Configuration
- 8.5.Firmware Upgrade
- 8.6.Records of device
- 8.7.Alarm
- 8.8.Remote Configuration
- 9.Services
- 9.1.Syslog
- 9.2.NTP
- 9.3.Email
- 9.4.SMS
- 9.5.Alert
- 9.6.Alert Examples
- 9.7.Call Reboot
- 9.8.Geolocation
- 9.9.DDNS
- 10.AT Commands Settings
USR-G809 User Manual Technical Support:
h.usriot.com
Jinan USR IOT Technology Limited www.pusr.com
58
7.3.2.MODBUS Mode
In this mode, USR-G809 can achieve bidirectional protocol conversion between serial MODBUS RTU data
and network MODBUS TCP data.
MODBUS mode supports 4 socket connections, which are independent with each other.
Socket A supports TCP client/server, socket B/C/D only supports TCP client.
7.3.3.HTTPD Mode
In this mode, user’s serial device can send request data to the HTTP server. USR-G809 will resolve the
server data then send to serial device. It will remove the HTTP header of the server data by default, users can
set whether to enable this function via AT commands.