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August 31, 2026 3 min read
User guide for the BitWise Controls BC4 network-enabled control enclosure — configuration, PoE, TCP/UDP command ports, and BCX module installation.
User guide for the BitWise Controls BC4 — a network-enabled control enclosure that houses BCX-series expansion modules, with web-based configuration, PoE support, and a built-in temperature sensor.
The BC4 is a network-enabled enclosure that houses one of BitWise Controls' available BCX-series expansion modules. It has a built-in web server for easy browser-based setup and supports network communications via TCP or UDP sockets. It supports Power over Ethernet (PoE) or can be powered via a 12VDC wall adapter. The on-board temperature sensor lets you monitor and respond to temperature changes in equipment racks, plasma displays, projectors, or other equipment.
When a BCX-series expansion module is plugged into the BC4, the BC4 automatically senses which module was installed and configures itself accordingly. The two-way command protocol includes get/set commands for all device settings and hardware control, plus polled and asynchronous status reporting. The BC4's firmware is field-upgradeable, so it can always support the latest features.
The BC4 ships from the factory with DHCP enabled and will attempt to auto-assign an IP address for easy first-time setup. BitWise Controls recommends assigning a static IP address outside your router's DHCP range for reliable, consistent access.
Navigate to the BC4's IP address (e.g. "192.168.1.100") in any browser to reach the Overview page, which shows the MAC address, current firmware revision, and information about the installed BCX module. The Configuration button on the menu bar opens network settings and (if applicable) RS232 Serial Port settings for an installed BCX module. The configuration page is password protected — default username admin, default password bitwise.
BitWise Controls' free ControlCenter software identifies and configures any BC4 on your network, and lets you test all BC4/BCX functionality (Serial, IR, GPIO, and Relay control). It also logs all socket communications so you can see exactly what's being sent to/from the BC4 — useful for debugging third-party scripts, plugins, and host controllers. Download it from bitwisecontrols.com.
Since the BC4's command protocol exposes get/set access to all internal settings (including the installed BCX module), it can be fully configured from any TCP or UDP client, including standard telnet applications.
| Port | Function |
|---|---|
| 5000 | TCP commands to and from BC4 |
| 5001–5004 | TCP to Serial #1–#4 (not available in all configurations) |
| 5200 | UDP commands to BC4 |
| 5201 | UDP data from BC4 |
Over TCP, commands aren't processed until a carriage return (CR) is received — you can open a telnet session (e.g. HyperTerminal or Windows Telnet) and type commands directly, or send a command as one packet terminated by CR. UDP commands must be sent as a single continuous packet. By default, UDP responses broadcast to all devices on the current subnet; specify a target machine with the bwc:udpsendto: command. See BitWise's Command Protocol documentation for the full command list.
The BC4's field-upgradeable firmware lets you stay current as BitWise Controls releases updates — for new BCX modules, new features, or performance improvements. Download the Firmware Updater utility from bitwisecontrols.com.
Before installing or removing a BCX module, disconnect all power, network, and device connections.
Reconnect Ethernet and power — the BC4 automatically senses which BCX module was installed and adapts accordingly. Note: a newly released BCX module may require a BC4 firmware update to operate properly.
Product news, software downloads, and updates are available in the support section at bitwisecontrols.com.
BitWise Controls, LLC · 1020 Hoosier Dr., Larkspur, CO 80118 · Phone: 866.932.1BWC (2292) · Fax: 866.932.2292 · www.bitwisecontrols.com
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