Roaster connection overview

Connection steps depend on model and protocol. First Crack supports three paths:

Method	Typical cases	Docs
Modbus RTU/TCP	Delta/Autonics controllers, Probat, Giesen, gas drum roasters	Modbus
Phidget22	Diedrich, Phidget temperature boards	Phidget
Artisan settings	Machines already linked in Artisan	Import Artisan settings

Artisan / Cropster compatible

If a model works with Artisan or Cropster, First Crack usually works with the same communication settings.

Common flow

1. Sign in to the desktop app.
2. Settings → Roasting machines → Add machine.
3. Enter alias, batch capacity, and preset (Modbus / Phidget / other).
4. Set port, IP, slave ID, register map, etc.
5. Click Connect and confirm live BT/ET.

Checklists by path

USB serial (Modbus RTU)

• USB cable from roaster to PC
• Correct USB–serial driver for your OS
• Correct COM port (Windows) / /dev/tty.* (macOS) in the app
• Baud, parity, slave ID match the roaster manual

LAN / Wi‑Fi (Modbus TCP)

• Roaster and PC on the same network
• Static IP or DHCP reservation for the roaster
• Firewall/router allows Modbus port (default 502)
• Update app IP if the roaster IP changes

Phidget

• Phidget22 drivers and Network Server running
• Sensors visible in Control Panel
• Phidget preset + channel mapping in the app

Unknown model

Send Contact:

• Roaster make & model
• Artisan machine settings screenshot if any (→ Artisan guide)
• Temperature controller brand (Delta, Autonics, etc.)
• USB vs LAN

When things fail

See Connection troubleshooting first.