Enervent eAir
Ventilation unit controller that reports air temperatures, humidity, fan speeds and alarms and sets modes.
The Enervent eAir is the control system of Enervent heat recovery ventilation units that runs the fans, heat recovery, heating and cooling in homes and commercial buildings. This Modbus RTU template reads air temperatures, humidity, fan speeds, heat recovery efficiency, status and alarms, and lets you set modes, setpoints and timer programs from ModbusCloud.
- Protocol
- Modbus RTU
- Connection
- RS485, 19200 baud
- Registers
- 467, read and write
- Brand
- Enervent
- Key readings
- Fresh air temperature · Supply air temperature · Extract air temperature · Exhaust air temperature · Relative humidity · Supply fan speed · Heat recovery efficiency · Unit status
- Available commands
- Stop · Away mode · Manual boost · Max heating or cooling · Supply air setpoint · Week timer program
- Compatible models
- eAir MD controller (software 1.14 and later) · Enervent heat recovery ventilation units with the eAir control (MD board), such as Pingvin, Pelican, Pandion and LTR units with eAir
- Last updated
Registers (467)
467 read, 419 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Fresh Air | °C | Read | |||
| Supply Air After HRC | °C | Read | |||
| Supply Air | °C | Read | |||
| Exhaust Air | °C | Read | |||
| Extract Air Temperature | °C | Read | |||
| Air Humidity | %RH | Read | |||
| Room Temperature Average | °C | Read | |||
| Room Temperature Sensor TE20 | °C | Read | |||
| Room Temperature Sensor TE21 | °C | Read | |||
| Fan Speed, Supply Air | Read | ||||
| Fan Speed, Extract Air | Read | ||||
| Status | Read | ||||
| Temperature Controller | Read | ||||
| Average Air Humidity, 48h | %RH | Read | |||
| Heat Recovery Efficiency, Supply Air | Read | ||||
| Heat Recovery Efficiency, Exhaust Air | Read | ||||
| Stop | Read and write | ||||
| Away Mode | Read and write | ||||
| Away Long Mode | Read and write | ||||
| Max Heating | Read and write | ||||
| Max Cooling | Read and write | ||||
| CO2 Boosting | Read and write | ||||
| RH Boosting | Read and write | ||||
| Manual Boost | Read and write | ||||
| Temperature Boost | Read and write | ||||
| Summer Night Cooling | Read and write | ||||
| Heating AWAY H | Read and write | ||||
| Cooling AWAY C | Read and write | ||||
| Lto On | Read and write | ||||
| Heat On | Read and write | ||||
| Decrease Temperature | Read and write | ||||
| Overtime | Read and write | ||||
| Eco Mode | Read and write | ||||
| Alarm A | Read and write | ||||
| Alarm B | Read and write | ||||
| Clock Program | Read and write | ||||
| Silent Mode | Read and write | ||||
| Heater Cool-off In STOP Mode | Read and write | ||||
| Service Reminder SERVICE EN | Read and write | ||||
| Cooling COOLING EN | Read and write | ||||
| Lto En | Read and write | ||||
| Heating HEATING EN | Read and write | ||||
| HRC Defrosting | Read and write | ||||
| Next Time Program | Read | ||||
| Extract Air Before HRC | °C | Read | |||
| Return Water | °C | Read | |||
| Pressure Difference Supply | Read | ||||
| Pressure Difference Ext. | Read | ||||
| HP/MDX/Dehum Supply Air | °C | Read | |||
| Measured Input Voltage AI1 | V | Read | |||
| Measured Input Voltage AI2 | V | Read | |||
| Measured Input Voltage AI3 | V | Read | |||
| Measured Input Voltage AI4 | V | Read | |||
| Measured Input Voltage AI5 | V | Read | |||
| Measured Input Voltage AI6 | V | Read | |||
| Calculated Value AI1 RES | Read | ||||
| Calculated Value AI2 RES | Read | ||||
| Calculated Value AI3 RES | Read | ||||
| Calculated Value AI4 RES | Read | ||||
| Calculated Value AI5 RES | Read | ||||
| Calculated Value AI6 RES | Read | ||||
| Input X6 | Read | ||||
| Input X7 | Read | ||||
| Absolute Humidity Control Output | Read | ||||
| Network Status | Read | ||||
| Supply Air Absolute Humidity | Read | ||||
| Sec Rtc | Read | ||||
| Min Rtc | Read | ||||
| Hour Rtc | Read | ||||
| Day Rtc | Read | ||||
| Month Rtc | Read | ||||
| Year Rtc | Read | ||||
| Setpoint For Supply Air | °C | Read | |||
| Display Sp | °C | Read | |||
| Temperature Controller Output | Read | ||||
| Sensor Type AI1 TYPE | Read and write | ||||
| Sensor Type AI2 TYPE | Read and write | ||||
| Sensor Type AI3 TYPE | Read and write | ||||
| Sensor Type AI4 TYPE | Read and write | ||||
| Sensor Type AI5 TYPE | Read and write | ||||
| Sensor Type AI6 TYPE | Read and write | ||||
| Voltage Low AI1 VL | V | Read and write | |||
| Voltage Low AI2 VL | V | Read and write | |||
| Voltage Low AI3 VL | V | Read and write | |||
| Voltage Low AI4 VL | V | Read and write | |||
| Voltage Low AI5 VL | V | Read and write | |||
| Voltage Low AI6 VL | V | Read and write | |||
| Voltage High AI1 VH | V | Read and write | |||
| Voltage High AI2 VH | V | Read and write | |||
| Voltage High AI3 VH | V | Read and write | |||
| Voltage High AI4 VH | V | Read and write | |||
| Voltage High AI5 VH | V | Read and write | |||
| Voltage High AI6 VH | V | Read and write | |||
| Voltage Low, Effect AI1 RL | Read and write | ||||
| Voltage Low, Effect AI2 RL | Read and write | ||||
| Voltage Low, Effect AI3 RL | Read and write | ||||
| Voltage Low, Effect AI4 RL | Read and write | ||||
| Voltage Low, Effect AI5 RL | Read and write | ||||
| Voltage Low, Effect AI6 RL | Read and write | ||||
| Voltage High, Effect AI1 RH | Read and write | ||||
| Voltage High, Effect AI2 RH | Read and write | ||||
| Voltage High, Effect AI3 RH | Read and write | ||||
| Voltage High, Effect AI4 RH | Read and write | ||||
| Voltage High, Effect AI5 RH | Read and write | ||||
| Voltage High, Effect AI6 RH | Read and write | ||||
| Average Outside Temperature | °C | Read and write | |||
| Supply Air Setpoint | °C | Read and write | |||
| Summer/winter Threshold Temperature | °C | Read and write | |||
| Temperature Decrease | °C | Read and write | |||
| Week Slot 1 Days | Read and write | ||||
| Week Slot 1 Start Hour | Read and write | ||||
| Week Slot 1 Start Minute | Read and write | ||||
| Week Slot 1 Stop Hour | Read and write | ||||
| Week Slot 1 Stop Minute | Read and write | ||||
| Week Slot 1 Function | Read and write | ||||
| Week Slot 2 Days | Read and write | ||||
| Week Slot 2 Start Hour | Read and write | ||||
| Week Slot 2 Start Minute | Read and write | ||||
| Week Slot 2 Stop Hour | Read and write | ||||
| Week Slot 2 Stop Minute | Read and write | ||||
| Week Slot 2 Function | Read and write | ||||
| Week Slot 3 Days | Read and write | ||||
| Week Slot 3 Start Hour | Read and write | ||||
| Week Slot 3 Start Minute | Read and write | ||||
| Week Slot 3 Stop Hour | Read and write | ||||
| Week Slot 3 Stop Minute | Read and write | ||||
| Week Slot 3 Function | Read and write | ||||
| Week Slot 4 Days | Read and write | ||||
| Week Slot 4 Start Hour | Read and write | ||||
| Week Slot 4 Start Minute | Read and write | ||||
| Week Slot 4 Stop Hour | Read and write | ||||
| Week Slot 4 Stop Minute | Read and write | ||||
| Week Slot 4 Function | Read and write | ||||
| Week Slot 5 Days | Read and write | ||||
| Week Slot 5 Start Hour | Read and write | ||||
| Week Slot 5 Start Minute | Read and write | ||||
| Week Slot 5 Stop Hour | Read and write | ||||
| Week Slot 5 Stop Minute | Read and write | ||||
| Week Slot 5 Function | Read and write | ||||
| Week Slot 6 Days | Read and write | ||||
| Week Slot 6 Start Hour | Read and write | ||||
| Week Slot 6 Start Minute | Read and write | ||||
| Week Slot 6 Stop Hour | Read and write | ||||
| Week Slot 6 Stop Minute | Read and write | ||||
| Week Slot 6 Function | Read and write | ||||
| Week Slot 7 Days | Read and write | ||||
| Week Slot 7 Start Hour | Read and write | ||||
| Week Slot 7 Start Minute | Read and write | ||||
| Week Slot 7 Stop Hour | Read and write | ||||
| Week Slot 7 Stop Minute | Read and write | ||||
| Week Slot 7 Function | Read and write | ||||
| Week Slot 8 Days | Read and write | ||||
| Week Slot 8 Start Hour | Read and write | ||||
| Week Slot 8 Start Minute | Read and write | ||||
| Week Slot 8 Stop Hour | Read and write | ||||
| Week Slot 8 Stop Minute | Read and write | ||||
| Week Slot 8 Function | Read and write | ||||
| Week Slot 9 Days | Read and write | ||||
| Week Slot 9 Start Hour | Read and write | ||||
| Week Slot 9 Start Minute | Read and write | ||||
| Week Slot 9 Stop Hour | Read and write | ||||
| Week Slot 9 Stop Minute | Read and write | ||||
| Week Slot 9 Function | Read and write | ||||
| Week Slot 10 Days | Read and write | ||||
| Week Slot 10 Start Hour | Read and write | ||||
| Week Slot 10 Start Minute | Read and write | ||||
| Week Slot 10 Stop Hour | Read and write | ||||
| Week Slot 10 Stop Minute | Read and write | ||||
| Week Slot 10 Function | Read and write | ||||
| Week Slot 11 Days | Read and write | ||||
| Week Slot 11 Start Hour | Read and write | ||||
| Week Slot 11 Start Minute | Read and write | ||||
| Week Slot 11 Stop Hour | Read and write | ||||
| Week Slot 11 Stop Minute | Read and write | ||||
| Week Slot 11 Function | Read and write | ||||
| Week Slot 12 Days | Read and write | ||||
| Week Slot 12 Start Hour | Read and write | ||||
| Week Slot 12 Start Minute | Read and write | ||||
| Week Slot 12 Stop Hour | Read and write | ||||
| Week Slot 12 Stop Minute | Read and write | ||||
| Week Slot 12 Function | Read and write | ||||
| Week Slot 13 Days | Read and write | ||||
| Week Slot 13 Start Hour | Read and write | ||||
| Week Slot 13 Start Minute | Read and write | ||||
| Week Slot 13 Stop Hour | Read and write | ||||
| Week Slot 13 Stop Minute | Read and write | ||||
| Week Slot 13 Function | Read and write | ||||
| Week Slot 14 Days | Read and write | ||||
| Week Slot 14 Start Hour | Read and write | ||||
| Week Slot 14 Start Minute | Read and write | ||||
| Week Slot 14 Stop Hour | Read and write | ||||
| Week Slot 14 Stop Minute | Read and write | ||||
| Week Slot 14 Function | Read and write | ||||
| Week Slot 15 Days | Read and write | ||||
| Week Slot 15 Start Hour | Read and write | ||||
| Week Slot 15 Start Minute | Read and write | ||||
| Week Slot 15 Stop Hour | Read and write | ||||
| Week Slot 15 Stop Minute | Read and write | ||||
| Week Slot 15 Function | Read and write | ||||
| Week Slot 16 Days | Read and write | ||||
| Week Slot 16 Start Hour | Read and write | ||||
| Week Slot 16 Start Minute | Read and write | ||||
| Week Slot 16 Stop Hour | Read and write | ||||
| Week Slot 16 Stop Minute | Read and write | ||||
| Week Slot 16 Function | Read and write | ||||
| Week Slot 17 Days | Read and write | ||||
| Week Slot 17 Start Hour | Read and write | ||||
| Week Slot 17 Start Minute | Read and write | ||||
| Week Slot 17 Stop Hour | Read and write | ||||
| Week Slot 17 Stop Minute | Read and write | ||||
| Week Slot 17 Function | Read and write | ||||
| Week Slot 18 Days | Read and write | ||||
| Week Slot 18 Start Hour | Read and write | ||||
| Week Slot 18 Start Minute | Read and write | ||||
| Week Slot 18 Stop Hour | Read and write | ||||
| Week Slot 18 Stop Minute | Read and write | ||||
| Week Slot 18 Function | Read and write | ||||
| Week Slot 19 Days | Read and write | ||||
| Week Slot 19 Start Hour | Read and write | ||||
| Week Slot 19 Start Minute | Read and write | ||||
| Week Slot 19 Stop Hour | Read and write | ||||
| Week Slot 19 Stop Minute | Read and write | ||||
| Week Slot 19 Function | Read and write | ||||
| Week Slot 20 Days | Read and write | ||||
| Week Slot 20 Start Hour | Read and write | ||||
| Week Slot 20 Start Minute | Read and write | ||||
| Week Slot 20 Stop Hour | Read and write | ||||
| Week Slot 20 Stop Minute | Read and write | ||||
| Week Slot 20 Function | Read and write | ||||
| Year Slot 1 Start Day | Read and write | ||||
| Year Slot 1 Start Month | Read and write | ||||
| Active Time Programs, Week Slots 1-16 | Read and write | ||||
| Year Slot 1 Start Hour | Read and write | ||||
| Year Slot 1 Start Minute | Read and write | ||||
| Year Slot 1 Stop Day | Read and write | ||||
| Year Slot 1 Stop Month | Read and write | ||||
| Active Time Programs, Week Slots 17-20 And Year Slot | Read and write | ||||
| Year Slot 1 Stop Hour | Read and write | ||||
| Year Slot 1 Stop Minute | Read and write | ||||
| Year Slot 1 Action | Read and write | ||||
| Year Slot 2 Start Day | Read and write | ||||
| Year Slot 2 Start Month | Read and write | ||||
| System Uptime | Read and write | ||||
| Year Slot 2 Start Hour | Read and write | ||||
| Year Slot 2 Start Minute | Read and write | ||||
| Year Slot 2 Stop Day | Read and write | ||||
| Year Slot 2 Stop Month | Read and write | ||||
| Year Slot 2 Stop Hour | Read and write | ||||
| Year Slot 2 Stop Minute | Read and write | ||||
| Year Slot 2 Action | Read and write | ||||
| Year Slot 3 Start Day | Read and write | ||||
| Year Slot 3 Start Month | Read and write | ||||
| Bootloader Version | Read and write | ||||
| Year Slot 3 Start Hour | Read and write | ||||
| Year Slot 3 Start Minute | Read and write | ||||
| Year Slot 3 Stop Day | Read and write | ||||
| Year Slot 3 Stop Month | Read and write | ||||
| Filter Test Hour | Read and write | ||||
| Year Slot 3 Stop Hour | Read and write | ||||
| Year Slot 3 Stop Minute | Read and write | ||||
| Year Slot 3 Action | Read and write | ||||
| Year Slot 4 Start Day | Read and write | ||||
| Year Slot 4 Start Month | Read and write | ||||
| Filter Test Day-of-week | Read and write | ||||
| Year Slot 4 Start Hour | Read and write | ||||
| Year Slot 4 Start Minute | Read and write | ||||
| Year Slot 4 Stop Day | Read and write | ||||
| Year Slot 4 Stop Month | Read and write | ||||
| Filter Test TF Fan Speed | Read and write | ||||
| Year Slot 4 Stop Hour | Read and write | ||||
| Year Slot 4 Stop Minute | Read and write | ||||
| Year Slot 4 Action | Read and write | ||||
| Year Slot 5 Start Day | Read and write | ||||
| Year Slot 5 Start Month | Read and write | ||||
| Filter Test PF Fan Speed | Read and write | ||||
| Year Slot 5 Start Hour | Read and write | ||||
| Year Slot 5 Start Minute | Read and write | ||||
| Year Slot 5 Stop Day | Read and write | ||||
| Year Slot 5 Stop Month | Read and write | ||||
| Year Slot 5 Stop Hour | Read and write | ||||
| Year Slot 5 Stop Minute | Read and write | ||||
| Year Slot 5 Action | Read and write | ||||
| Alarm Log Entry #1 | Read and write | ||||
| Alarm1 Stateclass | Read and write | ||||
| Alarm1 Yy | Read and write | ||||
| Alarm1 Mm | Read and write | ||||
| Alarm1 Dd | Read and write | ||||
| Alarm1 Hh | Read and write | ||||
| Alarm1 Mi | Read and write | ||||
| Alarm Log Entry #2 | Read and write | ||||
| Alarm2 Stateclass | Read and write | ||||
| Alarm2 Yy | Read and write | ||||
| Alarm2 Mm | Read and write | ||||
| Alarm2 Dd | Read and write | ||||
| Alarm2 Hh | Read and write | ||||
| Alarm2 Mi | Read and write | ||||
| Alarm Log Entry #3 | Read and write | ||||
| Alarm3 Stateclass | Read and write | ||||
| Alarm3 Yy | Read and write | ||||
| Alarm3 Mm | Read and write | ||||
| Alarm3 Dd | Read and write | ||||
| Alarm3 Hh | Read and write | ||||
| Alarm3 Mi | Read and write | ||||
| Alarm Log Entry #4 | Read and write | ||||
| Alarm4 Stateclass | Read and write | ||||
| Alarm4 Yy | Read and write | ||||
| Alarm4 Mm | Read and write | ||||
| Alarm4 Dd | Read and write | ||||
| Alarm4 Hh | Read and write | ||||
| Alarm4 Mi | Read and write | ||||
| Alarm Log Entry #5 | Read and write | ||||
| Alarm5 Stateclass | Read and write | ||||
| Alarm5 Yy | Read and write | ||||
| Alarm5 Mm | Read and write | ||||
| Alarm5 Dd | Read and write | ||||
| Alarm5 Hh | Read and write | ||||
| Alarm5 Mi | Read and write | ||||
| Alarm Log Entry #6 | Read and write | ||||
| Alarm6 Stateclass | Read and write | ||||
| Alarm6 Yy | Read and write | ||||
| Alarm6 Mm | Read and write | ||||
| Alarm6 Dd | Read and write | ||||
| Alarm6 Hh | Read and write | ||||
| Alarm6 Mi | Read and write | ||||
| Alarm Log Entry #7 | Read and write | ||||
| Alarm7 Stateclass | Read and write | ||||
| Alarm7 Yy | Read and write | ||||
| Alarm7 Mm | Read and write | ||||
| Alarm7 Dd | Read and write | ||||
| Alarm7 Hh | Read and write | ||||
| Alarm7 Mi | Read and write | ||||
| Alarm Log Entry #8 | Read and write | ||||
| Alarm8 Stateclass | Read and write | ||||
| Alarm8 Yy | Read and write | ||||
| Alarm8 Mm | Read and write | ||||
| Alarm8 Dd | Read and write | ||||
| Alarm8 Hh | Read and write | ||||
| Alarm8 Mi | Read and write | ||||
| Alarm Log Entry #9 | Read and write | ||||
| Alarm9 Stateclass | Read and write | ||||
| Alarm9 Yy | Read and write | ||||
| Alarm9 Mm | Read and write | ||||
| Alarm9 Dd | Read and write | ||||
| Alarm9 Hh | Read and write | ||||
| Alarm9 Mi | Read and write | ||||
| Alarm Log Entry #10 | Read and write | ||||
| Alarm10 Stateclass | Read and write | ||||
| Alarm10 Yy | Read and write | ||||
| Alarm10 Mm | Read and write | ||||
| Alarm10 Dd | Read and write | ||||
| Alarm10 Hh | Read and write | ||||
| Alarm10 Mi | Read and write | ||||
| Alarm Log Entry #11 | Read and write | ||||
| Alarm11 Stateclass | Read and write | ||||
| Alarm11 Yy | Read and write | ||||
| Alarm11 Mm | Read and write | ||||
| Alarm11 Dd | Read and write | ||||
| Alarm11 Hh | Read and write | ||||
| Alarm11 Mi | Read and write | ||||
| Alarm Log Entry #12 | Read and write | ||||
| Alarm12 Stateclass | Read and write | ||||
| Alarm12 Yy | Read and write | ||||
| Alarm12 Mm | Read and write | ||||
| Alarm12 Dd | Read and write | ||||
| Alarm12 Hh | Read and write | ||||
| Alarm12 Mi | Read and write | ||||
| Alarm Log Entry #13 | Read and write | ||||
| Alarm13 Stateclass | Read and write | ||||
| Alarm13 Yy | Read and write | ||||
| Alarm13 Mm | Read and write | ||||
| Alarm13 Dd | Read and write | ||||
| Alarm13 Hh | Read and write | ||||
| Alarm13 Mi | Read and write | ||||
| Alarm Log Entry #14 | Read and write | ||||
| Alarm14 Stateclass | Read and write | ||||
| Alarm14 Yy | Read and write | ||||
| Alarm14 Mm | Read and write | ||||
| Alarm14 Dd | Read and write | ||||
| Alarm14 Hh | Read and write | ||||
| Alarm14 Mi | Read and write | ||||
| Alarm Log Entry #15 | Read and write | ||||
| Alarm15 Stateclass | Read and write | ||||
| Alarm15 Yy | Read and write | ||||
| Alarm15 Mm | Read and write | ||||
| Alarm15 Dd | Read and write | ||||
| Alarm15 Hh | Read and write | ||||
| Alarm15 Mi | Read and write | ||||
| Alarm Log Entry #16 | Read and write | ||||
| Alarm16 Stateclass | Read and write | ||||
| Alarm16 Yy | Read and write | ||||
| Alarm16 Mm | Read and write | ||||
| Alarm16 Dd | Read and write | ||||
| Alarm16 Hh | Read and write | ||||
| Alarm16 Mi | Read and write | ||||
| Alarm Log Entry #17 | Read and write | ||||
| Alarm17 Stateclass | Read and write | ||||
| Alarm17 Yy | Read and write | ||||
| Alarm17 Mm | Read and write | ||||
| Alarm17 Dd | Read and write | ||||
| Alarm17 Hh | Read and write | ||||
| Alarm17 Mi | Read and write | ||||
| Alarm Log Entry #18 | Read and write | ||||
| Alarm18 Stateclass | Read and write | ||||
| Alarm18 Yy | Read and write | ||||
| Alarm18 Mm | Read and write | ||||
| Alarm18 Dd | Read and write | ||||
| Alarm18 Hh | Read and write | ||||
| Alarm18 Mi | Read and write | ||||
| Alarm Log Entry #19 | Read and write | ||||
| Alarm19 Stateclass | Read and write | ||||
| Alarm19 Yy | Read and write | ||||
| Alarm19 Mm | Read and write | ||||
| Alarm19 Dd | Read and write | ||||
| Alarm19 Hh | Read and write | ||||
| Alarm19 Mi | Read and write | ||||
| Alarm Log Entry #20 | Read and write | ||||
| Alarm20 Stateclass | Read and write | ||||
| Alarm20 Yy | Read and write | ||||
| Alarm20 Mm | Read and write | ||||
| Alarm20 Dd | Read and write | ||||
| Alarm20 Hh | Read and write | ||||
| Alarm20 Mi | Read and write | ||||
| Service Reminder ALARM SERVICE TIME | Read and write | ||||
| Start Time | Read and write | ||||
| Ending Time | Read and write | ||||
| Weekdays | Read and write | ||||
| Number Of Alarms | Read and write | ||||
| C Min Rtc | Read and write | ||||
| C Hour Rtc | Read and write | ||||
| C Day Rtc | Read and write | ||||
| C Month Rtc | Read and write | ||||
| C Year Rtc | Read and write | ||||
| Family | Read and write | ||||
| MD Hardware Version | Read and write | ||||
| MD SW Version | Read and write | ||||
| Modbus Id | Read and write | ||||
| IP Address IPADDR HIGH | Read and write | ||||
| IP Address IPADDR LOW | Read and write | ||||
| Gateway IP Address GWIPADDR HIGH | Read and write | ||||
| Gateway IP Address GWIPADDR LOW | Read and write | ||||
| Netmask NETMASK HIGH | Read and write | ||||
| Netmask NETMASK LOW | Read and write | ||||
| DNS Server Address DNSIP ADDR HIGH | Read and write | ||||
| DNS Server Address DNSIP ADDR LOW | Read and write | ||||
| DHCP | Read and write | ||||
| Modbus Speed | Read and write | ||||
| Modbus Parity | Read and write | ||||
| Fan Speed, Circulation Air | Read and write | ||||
| AO1 Voltage | V | Read and write | |||
| AO2 Voltage | V | Read and write | |||
| AO3 Voltage | V | Read and write | |||
| AO4 Voltage | V | Read and write | |||
| AO5 Voltage | V | Read and write | |||
| AO6 Voltage | V | Read and write | |||
| AO7 Voltage | V | Read and write | |||
| AO8 Voltage | V | Read and write | |||
| DI9 Pulse Count | Read and write | ||||
| DI1-12 And X9-GPIO1-3 Status | Read and write | ||||
| AI9 Voltage | V | Read and write | |||
| AI10 Voltage | V | Read and write | |||
| AI11 Voltage | V | Read and write | |||
| AI12 Voltage | V | Read and write | |||
| AI13 Voltage | V | Read and write | |||
| AI14 Voltage | V | Read and write | |||
| AI15 Voltage | V | Read and write | |||
| AI16 Voltage | V | Read and write | |||
| DO1-8 Status | Read and write |
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Send your device list
If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Show fresh, supply and extract air temperature, humidity and fan speeds of an Enervent unit on one ModbusCloud dashboard.
- Get an email when the status or alarm registers change or extract humidity rises above a threshold you set.
- Track heat recovery efficiency and air temperatures in the 365-day history to check the heat exchanger over a season.
- Switch a unit to away mode or start a manual boost remotely from the portal.
- Change the supply air setpoint remotely when occupants report it is too cold or too warm.
- Check the number of alarms and the software version before a service visit.
Installation
Check the Modbus id, speed and parity of the eAir unit; the default line settings are 19200 baud, 8 data bits, no parity.
Connect RS485 A and B of the MD board to the RS485 port of the ModbusCloud Gateway, with termination at both ends of the bus.
In ModbusCloud, add a Modbus device with the same id, speed and parity, and import this template.
Check that Fresh Air and Supply Air show plausible temperatures and that the fan speeds follow the unit.
Things to watch for
The unit does not answer. What should I check?
Compare the Modbus id, speed (9600, 19200 or 115200) and parity (none or even) with the eAir settings. Swap A and B and add a termination resistor at both ends of the bus. The id can be between 1 and 100.
Why are some temperatures 0 or far off?
Not every unit has every sensor. Optional sensors such as TE07, X6, X7 or room transmitters read 0 or an implausible value when they are not connected. Temperatures are sent multiplied by 10; the template divides by 10.
Some registers only exist on newer software. Which ones?
The analog output voltages, AI9 to AI16, the DI9 pulse counter and the digital input and output bitmaps (780 to 798) need MD software 1.18 or later. On older software these registers return an error.
How do I switch modes through Modbus?
Modes are coils: write 1 to Away Mode, Manual Boost or Stop to switch them on and 0 to switch them off. Never write registers the Enervent list marks as reserved. Writing registers is off per Gateway until it is enabled on request; write only values you understand.
Want to see how it works?
