Register map(s) for this device, each at the trust rung it earned. Addresses are 0-based as on the wire. Word order and scaling are confirmed at the hardware-verified rung and at no rung below it.
Read + decoded cleanly over a real network vs an independent third-party Modbus test server (transport and framing; reads are remapped into the server's register window, so the map's own addresses are NOT exercised). Does NOT prove word order/scaling against the actual device.
| point | address (0-based) | type | scale | unit |
|---|---|---|---|---|
| default_message_display_code | 0 | U16 | 1 | |
| unit_status | 1 | U16 | 1 | |
| outlet_temp | 2 | U16 | 1 | DEGREES_1 |
| inlet_temp | 3 | U16 | 1 | DEGREES_1 |
| aux_temp | 4 | U16 | 1 | DEGREES_1 |
| outdoor_temp | 5 | U16 | 1 | DEGREES_2 |
| exhaust_temp | 6 | U16 | 1 | DEGREES_2 |
| ffwd_temp | 7 | U16 | 1 | DEGREES_1 |
| fire_rate_out | 8 | U16 | 1 | % |
| o2_level | 9 | U16 | 1 | % |
| co_level | 10 | U16 | 1 | PPM |
| run_cycles_low | 11 | U16 | 1 | |
| run_cycles_high | 12 | U16 | 1 | |
| run_hours_low | 13 | U16 | 1 | |
| run_hours_high | 14 | U16 | 1 | |
| flame_strength | 15 | U16 | 1 | % |
| active_setpoint | 16 | U16 | 1 | DEGREES_1 |
| fire_rate_in | 17 | U16 | 1 | % |
| manual_fire_rate | 18 | U16 | 1 | % |
| terminals | RS485, 2-Wire Differential Bus With Shield |
| A/B polarity | It is imperative that polarity be maintained between all Modbus Network connections. |
| termination | A terminating resistor (120 ohms) on each end of the RS485 loop. BMS/BMS II has a built-in 120 ohm terminating resistor. |
| connector | RS232 (DB9-Female) and internal RS232 connector |
| isolation | 232 ISO GND |
| shield/ground | twisted-pair wiring shield should only be terminated at the controlling Master Controller for the Modbus Network. |
| broadcast | supported |
| protocol notes | Heartbeat Timeout: Fixed at 10 seconds For C-More, Adjustable For BMS/BMS II: 5 to 240 Seconds |
| firmware register | 20 |
| FC 43 device ID | not supported |
| power | 85-265 VAC |
| doc revision | REVISED FEBRUARY 17, 2011 |
Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.
If your device isn't here, upload its register map. Generation is free, and the connector keeps the rung it earns under testing.
To prove a connector against your own device, order hardware verification. If it doesn't verify, you don't pay.
Platform builders can license the verified library: machine-readable maps, the firmware matrix, API access.