EFAN-230 Zigbee Smart Thermostat
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Specifications:
- Protocol: MODBUS RTU
- Controller Model: EFAN-230
- Network Interface: RS485
- Address Size: 8-bit
- Data Size: 32-bit
Product Usage Instructions:
Configuration:
Configuration of the EFAN-230 controller must be conducted by a
qualified individual with the necessary technical knowledge and
authorization. Ensure compliance with country and EU standards and
regulations. Failure to follow instructions may void warranty.
General Information about MODBUS RTU:
The EFAN-230 controller can operate as a slave in a MODBUS RTU
network. The network can be configured in a Daisy Chain or straight
line setup. Avoid Star or network connections to prevent data
corruption due to cable reflections.
MODBUS RTU Network Operation – Slave Mode:
- Network connection via RS485 serial interface.
- Hardware-configured address, communication speed, and byte
format. - Access to all tags and data in the controller’s ladder
program. - Each MODBUS data register is 2 bytes in size.
RS-485 Communication Settings:
| Function | Description | Value Range | Means |
|---|---|---|---|
| Pxx | MODBUS Slave device address (ID) | 1 – 247 | MODBUS Slave (ID) |
| BAUD | Baud Rate | 4800, 9600, 19200, 38400 | Bitrate (Baud) |
FAQ:
Q: How do I configure the EFAN-230 controller for MODBUS RTU
network operation?
A: Configuration must be carried out by a qualified person with
the appropriate authorization and technical knowledge. Ensure
compliance with standards and regulations.
Q: What is the recommended network connection setup for the
EFAN-230 controller?
A: Use a Daisy Chain or straight line configuration. Avoid Star
or network connections to prevent data corruption.
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MODBUS RTU PROTOCOL FOR EFAN-230 CONTROLLER
Configuration
Configuration must be carried out by a qualified person with the appropriate authorization and technical knowledge, in accordance with the standards and regulations of the country and the EU. The manufacturer will not be held responsible for any conduct not in accordance with the instructions.
ATTENTION: There may be additional protection requirements for the entire installation and configuration, which the installer/ programmer is responsible for maintaining.
General information about MODBUS RTU
The MODBUS RTU structure uses a master-slave system to exchange messages. It allows a maximum of 247 slaves, but only one master. The master controls the operation of the network and only it sends the request. Slaves do not undertake transmissions on their own. Each communication begins with the master making a request to the Slave, which responds to the master with what it has been asked. The master (computer) communicates with slaves (controllers) in two-wire RS-485 mode. This uses data lines A+ and B- for data exchange, which MUST be one twisted pair .
master
SLAVE 1 EFAN-230B
SLAVE 2 EFAN-230W
SLAVE 3 EFAN-230B
SLAVE X EFAN-230W
Magistral 1
SLAVE 1 EFAN-230B
SLAVE 2 EFAN-230W
SLAVE 3 EFAN-230B
SLAVE X EFAN-230W
Magistral 2
Daisy Chain
Star
Net
No more than two wires can be connected to each terminal, ensuring that a “Daisy Chain” (in series) or “straight line” (direct) configuration is used. Star or network (open) connection is not recommended, as reflections within the cable can cause data corruption.
MODBUS RTU network operation – Slave mode
Engo’s MODBUS controller has the following features when operating as a slave in a MODBUS RTU network: – Network connection via RS485 serial interface. – Address, communication speed and byte format determined by hardware configuration. – Allows access to all tags and data used in the controller’s ladder program. – 8-bit slave address – 32-bit data size (1 address = 32-bit data return) – Each MODBUS data register has a size of 2 bytes.
ATTENTION: Before the controller is connected to the RS-485 network, it must first be properly configured. The communication settings are configured in the service parameters of the regulator (device).
ATTENTION: Connecting unconfigured controllers to the RS-485 network will result in improper operation.
Copyright – This document may only be reproduced and distributed with the express permission of Engo Controls and may only be provided to authorized persons or companies with the required technical expertise.
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RS-485 communication settings
Pxx
Function
Addr
MODBUS Slave device address (ID).
BAUD
Baud
PARI
Parity bit – sets data parity for error detection
STOP
StopBit
Value
1 – 247 4800 9600 19200 38400 None Even Odd
1 2
Supports the following function codes:
#03 – reading n registers (Holding Registers) #04 – reading n registers (Input Registers) #06 – write 1 register (Holding Register)
INPUT registers – read only
Description MODBUS Slave device address (ID).
Bitrate (Baud)
None Even Odd 1 stop bit 2 stop bit
Default value 1
9600
None 1
Adress Dec Hex 0 0x0000 1 0x0001 2 0x0002 3 0x0003 5 0x0005 6 0x0006
7 0x0007
8 0x0008 9 0x0009 10 0x000A
Access R (#03) R (#03) R (#03) R (#03) R (#03) R (#03)
R (#03)
R (#03) R (#03) R (#03)
Description
Value range
Means
Engo MODBUS Model ID Firmware-Version Working-state
Value of the Integrated temperature sensor, °C Value of the External temperature sensor S1, °C Value of the External temperature sensor S2, °C
Fan state
Valve 1 stat Valve 2 state
1-247 MODBUS Slave (ID)
0x0001-0x9999 0x1110=1.1.10 (BCD code)
0b00000010=Idle, switch OFF 0b00000000=Idle, room meet temperature 0b10000001=Heating 0b10001000=Cooling 0b00001000=Idle, sensor error
50 – 500 N-> temp=N/10 °C
50 – 500
0 = Open (sensor break)/ contact open 1 =Closed (sensor short circuit )/ contact closed N-> temp=N/10 °C
50 – 500
0 = Open (sensor break)/ contact open 1 =Closed (sensor short circuit )/ contact closed N-> temp=N/10 °C
0b00000000= OFF 0b00000001= I Fan stage low 0b00000010= II Fan stage medium 0b00000000 – 0b00000100= III Fan state high 0b00001111 0b00001000= Auto – OFF 0b00001001= Auto – I low 0b00001010= Auto – II medium 0b00001100= Auto – III high
0 – 1000
0 = OFF (valve closed) 1000 = ON / 100% (valve open)
0 – 1000
0 = OFF (valve closed) 1000 = ON / 100% (valve open)
Humidity measurement (with 5% indication accuracy) 0 – 100 N-> humidity=N %
Default 1
2
HOLDING registers for reading and writing
Adress Dec Hex
Access
0 0x0000 R/W (#04)
Description Engo MODBUS Model ID
Value range
1-247 MODBUS Slave (ID)
Means
Default 1
234 0x00EA R/W (#06)
Fancoil type
1 = 2 pipe – only heating
2 = 2 pipe – only cooling
1 – 6
3 = 2 pipe – heating & cooling 4 = 2 pipe – underfloor heating
0
5 = 4 pipe – heating & cooling
6 = 4 pipe – underfloor heating & cooling by fancoil
0
Input inactive. Change between heating and cooling with the buttons.
Input used to change heating/cooling via external contact
1
connected to S1-COM: – S1-COM open –> HEAT mode
– S1-COM shorted –> COOL mode
235 0x00EB R/W (#06)
S1-COM input configuration (P01 install parameter)
Input used to AUTOMATICALLY change heating/cooling
based on PIPE TEMPERATURE in a 2-pipe system.
2
The controller switches between heating
and cooling modes based on the pipe temperature set in parameters P17 and P18.
0
Allow fan operation dependent on the temperature
measurement on the pipe. For example, if the temperature
on the pipe is too low, and the controller is in heating mode
3
– the pipe sensor will not allow the fan to run.
The change of heating/cooling is done manually – using the
buttons. Values for fan control based on pipe temperature
are set in parameters P17 and P18.
4
Activation of the floor sensor in the floor heating configuration.
0
Input disabled
236 0x00EC R/W (#06)
S2-COM input configuration (P02 install parameter)
1
Occupancy sensor (when contacts are opened, activate ECO mode)
0
2
External temperature sensor
237 0x00ED R/W (#06)
Selectable ECO mode (Installer Parameters -P07)
0 1
NO – Disabled YES – Active
0
238 0x00EE R/W (#06)
ECO mode temperature value for heating (Installer parameters -P08)
50 – 450
N-> temp=N/10 °C
150
239 0x00EF R/W (#06)
ECO mode temperature value for cooling (Installer parameters -P09)
50 – 450
N-> temp=N/10 °C
300
Algorithm delta FAN in heating mode The parameter determines the width of the temperature
range, in which the fan operates in heating mode.
If the room temperature drops then:
240 0x00F0 R/W (#06) 1. when the value of delta FAN is small, the faster the 5 – 50
N-> temp=N/10 °C
20
response of the fan to a change in temperature
– faster increase in speed
2. when high value of Delta FAN, the slower the fan increases speed
(Installer parameters -P10)
3
Adress Dec Hex
Access
241 0x00F1 R/W (#06)
Description
Fan on temperature for heating The fan will start working if the temperature
in the room drops below the preset by the value of the parameter (Installer parameters -P11
Value range
0 – 50
Control algorithm
242 0x00F2 R/W (#06)
(TPI or hysteresis) for the heating valve
0 – 20
(Installer parameters -P12)
FAN delta algorithm for cooling The parameter determines the width of the temperature
range in which the fan operates in cooling mode. If the room temperature increases then:
1. when a small value of Delta FAN,
243 0x00F3 R/W (#06) the faster the response of the fan to a change in
5 – 50
temperature
temperature – faster increase in speed.
2. when large value of Delta FAN, the slower the fan increases speed.
(Installer parameters -P13)
Fan on temperature for cooling.
The fan will start working if the temperature
244 0x00F4 R/W (#06)
in the room rises above the
0 – 50
the setpoint by the value of the parameter.
(Installer parameters -P14)
245 0x00F5 R/W (#06)
Hysteresis value for the cooling valve (Installer parameters -P15)
1 – 20
Dead zone of switching heating/cooling
In a 4-pipe system.The difference between the
246 0x00F6 R/W (#06)
Set temperature and room temperature, at which the controller will automatically change the
5 – 50
heating/cooling operation mode.
(Installer parameters -P16)
The switching temperature value from heating to cooling
– 2-pipe system.
247 0x00F7 R/W (#06)
In a 2-pipe system, below this value the system switches to cooling mode
270 – 400
and allows the fan to start.
(Installer parameters -P17)
248 0x00F8 R/W (#06)
The value of the switching temperature from cooling into heating – 2-pipe system.
In a 2-pipe system, above this value the system switches to heating mode and allows the fan to start. (Installer parameters -P18)
100 – 250
Cooling ON delay.
A parameter used in 4-pipe systems with automatic
249
0x00F9
R/W (#06)
switching between heating and cooling. This avoids too frequent switching between heating and
0 – 15 min
cooling modes and oscillation of the room temperature.
(Installer parameters -P19)
250 0x00FA R/W (#06)
Maximum floor temperature To protect the floor, heating will be turned off,
when the floor sensor temperature rises above the maximum value. (Installer parameters -P20)
50 – 450
Means N-> temp=N/10 °C
0 = TPI 1 = ±0,1C 2 = ±0,2C… N-> temp=N/10 °C (±0,1…±2C)
N-> temp=N/10 °C
N-> temp=N/10 °C N-> temp=N/10 °C (±0,1…±2C)
N-> temp=N/10 °C
N-> temp=N/10 °C
N-> temp=N/10 °C
N-> temp=N/10 °C
Default 50 5
20
50 5 20 300 100 0 350
4
Adress Dec Hex
Access
251 0x00FB R/W (#06)
254 0x00FE R/W (#06) 255 0x00FF R/W (#06) 256 0x0100 R/W (#06)
Description
Minimum floor temperature To protect the floor, heating will be switched on,
when the floor sensor temperature drops below the minimum value. (Installer parameters -P21)
PIN code for installer settings (Installer Parameters -P23)
Requiring a PIN code to unlock the keys (Installer Parameters -P24)
Fan operation (Installer parameters -FAN)
257 0x0101 R/W (#06)
Power on/off – switching off the regulator
258 0x0102 R/W (#06)
Operation mode
260 0x0104 R/W (#06)
Fan speed setting
262 0x0106 R/W (#06)
263 0x0107 R/W (#06)
268 0x010C R/W (#06)
269 0x010D R/W (#06)
270 0x010E R/W (#06)
273 0x0111 R/W (#06)
274 0x0112 R/W (#06)
275 0x0113 R/W (#06)
279 0x0117 R/W (#06)
280 0x0118 R/W (#06)
284 0x011C R/W (#06)
285 0x011D
R/W (#06))
288 0x0120 R/W (#06)
Key lock
Display brightness (Installer Parameters -P22)
Clock – minutes Clock – hours Clock – Day of the week (1=Monday) Set temperature in schedule mode Set temperature in manual mode Set temperature in FROST mode Maximum setpoint temperature Minimum setpoint temperature Accuracy of displayed temperature
Correction of displayed temperature
Selection of system type – heating / cooling (dependent on the setting of input S1)
Value range
Means
50 – 450
N-> temp=N/10 °C
0 – 1 0 – 1
0 – 1
0,1
0,1,3
0,1 0-100 0-59 0-23 1~7 50-450 50-450
50 50-450 50-450
1, 5 -3.0… 3.0°C 0,1
0 = disabled 1 = PIN (First default code 0000)
0 = NIE 1 = TAK
0 = NO – Inactive – output contacts for fan control are completely disabled 1 = YES
0=OFF 1=ON
0=Manual 1=Schedule 3=FROST – anti-freeze mode
0b000000= OFF – fan off 0b00000001= I (low) fan gear 0b000010= II (medium) fan gear 0b00000100= III (high) fan gear 0b00001000= Automatic fan speed – OFF 0b00001001= Automatic fan speed – 1st gear 0b00001010= Automatic fan speed – 2nd gear 0b00001100= Automatic fan speed – 3rd gear
0=unlocked 1=Locked
N-> Brightness =N%
Minutes
Hours
Day of the week
N-> temp=N/10 °C
N-> temp=N/10 °C
N-> temp=N/10 °C
N-> temp=N/10 °C
N-> temp=N/10 °C
N-> temp=N/10 °C
in steps of 0.5C
0 = Heating 1 = Cooling
Default
150
0 0 1 1 0
0 30 0 0 3 210 210 50 350 50 1 0 0
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Documents / Resources
 |
Engo EFAN-230 Zigbee Smart Thermostat [pdf] Owner's Manual 230B, 230W, EFAN-230 Zigbee Smart Thermostat, EFAN-230, Zigbee Smart Thermostat, Smart Thermostat, Thermostat |