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Brainboxes ES-257
Manufacturer documented GLOBAL
Identity
| category | gateways |
| manufacturer | Brainboxes |
| manufacturer_part_number | ES-257 |
| model | ES-257 |
| mpn | ES-257 |
| product_family | Brainboxes ES Ethernet-to-Serial device servers |
| product_status | active |
| region | GLOBAL |
| series | ES (Ethernet to Serial) |
| variant | — |
Electrical
| default_operating_mode |
Telnet + COM port control Mode (Server)
ES Range Product Manual 3.5 — Factory Default Settings
|
| galvanic_isolation |
Not printed - absent
ES-257 — official product page — Specification
|
| power_consumption_typical |
0.92 W typical
ES-257 — official product page — Specification
|
| power_input |
5-30 V DC, reverse-polarity protected
ES-257 — official product page — Specification
|
Physical / mechanical
| dimensions |
106 x 105 x 28 mm
ES-257 — official product page — Specification
|
| weight |
0.126 kg
ES-257 — official product page — Specification
|
Environment
| operating_temperature |
-10 °C to +60 °C
ES-257 — official product page — Specification
|
Interfaces & connectors
| default_ip_mode |
DHCP; falls back to static 192.168.127.254
ES Range Product Manual 3.5 — Factory Default Settings
|
| default_serial_settings |
115200 baud, 8 data bits, no parity, 1 stop bit
ES Range Product Manual 3.5 — Factory Default Settings
|
| default_tcp_port_serial_port_1 |
9001
ES Range Product Manual 3.5 — Factory Default Settings
|
| default_tcp_port_serial_port_2 |
9002
ES Range Product Manual 3.5 — Factory Default Settings
|
| device_type | serial device server (Ethernet-to-serial converter) |
| ethernet_interface |
Ethernet 10/100, RJ45
ES-257 — official product page — Specification
|
| home_assistant_modbus_tcp_suitable | False |
| home_assistant_suitability_basis | Transparent serial tunnel only. A NONE-forcing read of the ES Range Product Manual 3.5 (which itself states it covers ES-246, ES-257, ES-313, ES-320, ES-446, ES-457, ES-279, ES-346, ES-701, ES-842, ES-357, ES-020, ES-031, ES-042, ES-420, ES-413) returned no occurrence of 'Modbus' anywhere in the document, and the same read of the model's own datasheet PDF returned no occurrence of 'Modbus'. The manual describes only raw TCP sockets, Telnet/RFC2217 and Windows virtual COM ports (Boost.LAN driver), plus peer-to-peer serial tunnelling between two units. Factory default operating mode is printed as 'Telnet + COM port control Mode (Server)'. The device does not parse or convert Modbus frames, so a standard Modbus TCP client cannot address a serial Modbus RTU slave through it. |
| protocols |
TCP/IP sockets, serial port tunnelling, Windows virtual COM ports
ES-257 — official product page — Specification
|
| serial_baud_rate_range |
110 to 1,000,000 baud
ES-257 — official product page — Specification
|
| serial_connector |
DB9 male x2
ES-257 — official product page — Specification
|
| serial_port_count |
2
ES-257 — official product page — Specification
|
| serial_standards |
RS-232 (only), both ports
ES-257 — official product page — Specification
|
Certifications
| certifications |
CE, FCC, UKCA, UL6268, KCC, NDAA compliant, TAA compliant, AEO
ES-257 — official product page — Specification
|
Документи
datasheet
Brainboxes ES-257 datasheet
product-page
ES-257 — official product page
technical-manual
ES Range Product Manual 3.5