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PUSR (Jinan USR IOT Technology Limited) USR-DR404
Manufacturer documented GLOBAL
Identity
| category | gateways |
| manufacturer | PUSR (Jinan USR IOT Technology Limited) |
| manufacturer_part_number | USR-DR404 |
| model | USR-DR404 |
| mpn | USR-DR404 |
| product_family | USR-DR404 |
| product_status | active |
| region | GLOBAL |
| series | USR-DR |
| variant | — |
Electrical
| baud_rate_range |
300~230.4Kbps
USR-DR404 — official product page — Hardware block, row 'InterfaceStandard'
|
| default_ap_ssid |
USR-DR404_xxxx
User Manual for WiFi Serial Device Server USR-DR404 — Form 19 basic parameters
|
| default_baud_rate |
57600 bps
User Manual for WiFi Serial Device Server USR-DR404 — 'Form 8' serial port settings (stated as the default for AT commands)
|
| default_data_bits |
8
User Manual for WiFi Serial Device Server USR-DR404 — 'Form 8' serial port settings
|
| default_parity |
None
User Manual for WiFi Serial Device Server USR-DR404 — 'Form 8' serial port settings
|
| default_password |
admin
User Manual for WiFi Serial Device Server USR-DR404 — Form 19
|
| default_ssid |
USR-DR404_xxxx
User Manual for WiFi Serial Device Server USR-DR404 — 'Form 19 Basic Parameters'
|
| default_stop_bits |
1
User Manual for WiFi Serial Device Server USR-DR404 — 'Form 8' serial port settings
|
| default_username |
admin
User Manual for WiFi Serial Device Server USR-DR404 — Form 19
|
| power_input |
DC5~36V
USR-DR404 — official product page — Hardware block, row 'Input Voltage'
|
| wifi_frequency |
2.400 GHz - 2.4835 GHz
USR-DR404 — official product page — Wi-Fi block, row 'Frequency Range'
|
| wifi_security |
WPA-PSK/WPA2-PSK; encryption TKIP/AES
USR-DR404 — official product page — Software block, rows 'Security'/'Encryption'
|
| wifi_standard |
802.11 b/g/n
USR-DR404 — official product page — Wi-Fi block, row 'WiFi'
|
| work_modes |
Transparent transmission / Serial command / HTTPD Client / Modbus TCP<=>Modbus RTU
USR-DR404 — official product page — Software block, row 'Work Mode'
|
Physical / mechanical
| dimensions |
109.66 x 28 x 64.71 (L*W*H) mm
USR-DR404 — official product page — Hardware block, row 'Size'
|
Installation
| mounting |
DIN rail
USR-DR404 — official product page — product title 'DIN-Rail RS485 to WiFi Converters'
|
Environment
| operating_temperature |
-40 ~ 85 degC
USR-DR404 — official product page — Hardware block, row 'Operating Temp'
|
| storage_temperature |
-40 ~ 125 degC
USR-DR404 — official product page — Hardware block, row 'StorageTemp'
|
Interfaces & connectors
| configuration_methods |
Web server + AT command
USR-DR404 — official product page — Software block, row 'Configuration'
|
| default_ip_address |
10.10.100.254
User Manual for WiFi Serial Device Server USR-DR404 — 'Form 19 Basic Parameters'
|
| default_modbus_polling_state |
off
User Manual for WiFi Serial Device Server USR-DR404
|
| default_serial_parameters |
57600, none, 8, 1
User Manual for WiFi Serial Device Server USR-DR404 — serial AT-command section
|
| default_subnet_mask |
255.255.255.0
User Manual for WiFi Serial Device Server USR-DR404 — 'Form 19 Basic Parameters'
|
| default_tcp_timeout |
0 (no timeout)
User Manual for WiFi Serial Device Server USR-DR404
|
| default_web_password |
admin
User Manual for WiFi Serial Device Server USR-DR404 — 'Form 19 Basic Parameters'
|
| default_web_username |
admin
User Manual for WiFi Serial Device Server USR-DR404 — 'Form 19 Basic Parameters'
|
| device_type | DIN-rail RS485 to WiFi/Ethernet serial device server / Modbus TCP-RTU gateway |
| ethernet_isolation |
2KV Electromagnetic isolation for Ethernet port
USR-DR404 — official product page — Ethernet block, row 'Protection'
|
| ethernet_ports |
1 x WAN/LAN, 10/100Mbps, MDI/MDIX
USR-DR404 — official product page — Ethernet block, rows 'Port Number'/'Speed Rate'
|
| home_assistant_modbus_tcp_suitable | True |
| home_assistant_suitability_basis | THE TRANSPARENT-VERSUS-GATEWAY DISTINCTION IS EXPLICIT ON THIS MODEL. The product page's 'Work Mode' row lists four alternatives - 'Transparent transmission / Serial command / HTTPD Client / Modbus TCP<=>Modbus RTU' - so transparent transmission and Modbus gateway are separate selectable modes, not the same thing. The manual describes transparent transmission as data 'transported transparently between the serial port and WIFI/Ethernet, no analyzing', and separately states the device 'supports Modbus TCP to Modbus RTU (does not support Modbus ASCII)'. Only the second mode exposes the serial Modbus RTU devices to a standard Modbus TCP client, and it must be selected in the web UI. Modbus ASCII is documented as NOT supported. Default web address is 10.10.100.254 in AP mode with SSID USR-DR404_xxxx. |
| modbus_ascii |
false
User Manual for WiFi Serial Device Server USR-DR404 — 'does not support Modbus ASCII'
|
| modbus_gateway |
This serial server supports Modbus TCP to Modbus RTU (does not support Modbus ASCII)
User Manual for WiFi Serial Device Server USR-DR404
|
| modbus_gateway_mode |
supports Modbus TCP to Modbus RTU (does not support Modbus ASCII)
User Manual for WiFi Serial Device Server USR-DR404 — Modbus section
|
| modbus_register_map_available | False |
| modbus_register_map_note | no register map in the DR404 manual |
| network_protocols |
TCP/UDP/ARP/ICMP/DHCP/DNS/HTTP
USR-DR404 — official product page — Software block, row 'Networking Protocol'
|
| rs232 |
false
USR-DR404 — official product page — only RS485 is printed in the Hardware block
|
| rs485 |
true
USR-DR404 — official product page — Hardware block, row 'Interface Standard'
|
| serial_ports |
1 x RS485, 300~230.4Kbps
USR-DR404 — official product page — Hardware block, row 'Interface Standard'
|
| serial_protection |
485 interface (anti surge, anti thunder, overcurrent protection)
USR-DR404 — official product page — Hardware block
|
| tcp_server_max_clients |
24 clients
USR-DR404 — official product page — Software block, row 'Max Client Number in TCP Server Mode'
|
| wifi_network_modes |
Station / AP / AP+Station
USR-DR404 — official product page — Software block, row 'Network Mode'
|
Certifications
| certifications |
FCC/CE
USR-DR404 — official product page — Wi-Fi block, row 'Certificate'
|
Документи
product-page
USR-DR404 — official product page
technical-manual
User Manual for WiFi Serial Device Server USR-DR404