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Waveshare RS232 TO ETH (B)
Manufacturer documented GLOBAL
Identity
| category | gateways |
| manufacturer | Waveshare |
| manufacturer_part_number | 23950 |
| model | RS232 TO ETH (B) |
| mpn | 23950 |
| product_family | RS485/RS232 TO ETH |
| product_status | active |
| region | GLOBAL |
| series | Waveshare serial server / Modbus gateway range |
| variant | — |
Electrical
| isolation_wording_as_printed |
Power isolation, signal isolation protection
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| power_supply |
Screw terminal DC 6 ~ 36 V
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| working_modes |
TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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Physical / mechanical
| dimensions_l_w_h |
87 x 36 x 59 mm
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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Environment
| humidity_range |
5% ~ 95% relative humidity
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| operating_temperature |
-40 ~ 85 degC
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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Interfaces & connectors
| communication_interfaces |
RS232 port x 1, Ethernet port x 1
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| communication_methods |
TCP/IP direct communication, virtual serial port (VCOM)
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| configuration_methods |
host/PC configuration utility, WEB browser, device management function library
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| default_modbus_tcp_port |
502
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Modbus gateway configuration section
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| default_tcp_port |
4196
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Default parameters / quick-start section
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| device_type | serial device server / Modbus TCP-RTU gateway |
| ethernet_port |
Common Ethernet port; 10/100M self-adaptive RJ45 interface, 2 KV surge protection
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| home_assistant_modbus_tcp_suitable | True |
| home_assistant_suitability_basis | the model's own Waveshare wiki hardware-parameter table names the product type 'Modbus Gateway' and states 'Support Modbus gateway function, support Modbus RTU to Modbus TCP'; the wiki's Modbus configuration section gives Modbus TCP port 502. That is documented RTU<->TCP protocol conversion, not merely the transparent TCP-to-serial tunnel the same device also offers. Waveshare does not itself document Home Assistant or Node-RED integration - the basis here is the documented Modbus TCP server behaviour a standard Modbus TCP client can use. |
| json_to_modbus_rtu |
true
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Advanced software functions: 'Support JSON to Modbus RTU'
|
| modbus_rtu_to_modbus_tcp_gateway |
true
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Features / hardware parameter table: 'Support Modbus gateway function, support Modbus RTU to Modbus TCP'
|
| mqtt_gateway |
true
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Advanced software functions: 'Support MQTT gateway function'
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| network_protocols |
ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| poe |
false
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column 'RS232 TO ETH (B)', 'Ethernet'
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| serial_baud_rate_range |
300 ~ 115200 bps
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| serial_data_bits |
5 ~ 9 bits
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| serial_electrical_standard |
Isolated RS232
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| serial_flow_control |
no flow control
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| serial_parity_options |
none, odd, even, mark, space
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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| serial_port_galvanic_isolation |
true
RS232 TO ETH (B) - Waveshare Wiki (product wiki incl. hardware parameters, working modes, Modbus gateway configuration) — Hardware parameter table ('Product Type'/'Basic Function' ... row block), column headed exactly 'RS232 TO ETH (B)'
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