BacBus · iPhone, iPad & Mac
The BACnet tool that fits in your pocket.
BacBus puts BACnet/IP and Modbus/TCP on your phone: discover devices, poll live values, and write points — right at the equipment, without hauling a laptop or renting a proprietary gateway.
Discover
Scan the network and see every BACnet/IP device and Modbus/TCP endpoint on it — objects, addresses, and models — over Wi-Fi or cellular.
Poll
Watch present values live while you commission equipment or chase a fault, with status flags and engineering units, not raw hex.
Write
Command points, test sequences, and set overrides from the same screen — reads on coils and registers included for Modbus work.
Get BacBus
Free to download — discovery and live polling included, no account required. BacBus Pro (a one-time $29.99 upgrade) unlocks point writes and overrides.
Why we give it away
Built for our own job sites first.
BacBus is the tool our engineers reach for when they’re standing in a mechanical room verifying a controller. Making the discovery and polling free makes the whole trade’s day better — and like everything we build, it collects no data and demands no account. It’s useful whether or not you ever run GEM.
Like the free tool? The platform thinks the same way.
BacBus is a small taste of GEM’s approach: open protocols, no lock-in, tools that respect your time.