Marvair Commstat4
Manufacturer: Marvair
Product: Commstat4
Model:
Class: MODBUS
Updated: 2023-11-13
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Registers
| # | Name | Unit | Description |
|---|---|---|---|
| 1 | F/C | °F | |
| 2 | Changeover days | days | |
| 3 | Cool set point | °F | |
| 4 | Heat set point | °F | |
| 5 | High building temp 1 set point | °F | |
| 6 | High building temp 2 set point | °F | |
| 7 | Low building temp set point | °F | |
| 8 | Blower on | . | |
| 9 | High voltage input enable / alarm output enable | . | |
| 10 | Anti-short cycle timer | s | |
| 11 | Stage 1 Differential | °F | |
| 12 | Stage 2 differential | °F | |
| 13 | Off differential | °F | |
| 14 | Blower off time delay | s | |
| 15 | Operational units when generator is used | . | |
| 16 | Smoke auto reset | min | |
| 17 | Smoke relay | . | |
| 18 | ECON mode enable | . | |
| 19 | Multiple sensors | . | |
| 20 | Aux. 1 relay | . | |
| 21 | Aux. 2 relay | . | |
| 22 | Excessive cycle | . | |
| 23 | AC / HP system | . | |
| 24 | Master/slave | . | |
| 25 | Stage 3 differential | °F | |
| 26 | Stage 4 differential | °F | |
| 27 | Stage 5 differential | °F | |
| 28 | Stage 6 differential | °F | |
| 29 | Stage 7 differential | °F | |
| 30 | Stage 8 differential | °F | |
| 31 | Stage 9 differential | °F | |
| 32 | Stage 10 differential | °F | |
| 33 | Stage 11 differential | °F | |
| 34 | Stage 12 differential | °F | |
| 35 | Total Number of Units | N | |
| 36 | Stage 2 differential in econ cooling mode | ||
| 37 | Controller On/Off | . | |
| 38 | Lead unit | N | |
| 39 | Master controller inputs | ||
| 40 | Master controller's unit #1 inputs | ||
| 41 | Master controller's unit #2 inputs | ||
| 42 | Master controller's unit #1 outputs | ||
| 43 | Master controller's unit #2 outputs | ||
| 44 | Output command master to slave unit #1 | ||
| 45 | Output command master to slave unit #2 | ||
| 46 | Saved value of master unit #1 outputs | ||
| 47 | Saved value of master unit #2 outputs | ||
| 48 | Saved value command master to slave unit #1 | ||
| 49 | Saved value command master to slave unit #2 | ||
| 50 | Master controller lockout status | ||
| 51 | Current stage | ||
| 52 | Current temperature | °F | |
| 53 | Time left for the comfort mode operation. | ||
| 54 | Slave controller inputs | ||
| 55 | Slave controller's unit #1 inputs | ||
| 56 | Slave controller's unit #2 inputs | ||
| 57 | Slave's #1 temp sensor reading | °F | |
| 58 | Slave's #2 temp sensor reading | °F | |
| 59 | Slave's #3 temp sensor reading | °F | |
| 60 | Slave's unit #1 output status | ||
| 61 | Slave's unit #2 output status | ||
| 62 | Slave controller lockout status | ||
| 63 | Smoke alarm | . | |
| 64 | Low temp alarm | . | |
| 65 | High temp alarm | . |
Notes
Commstat4 is a Modbus interface and control unit for Marvair air handler units.