E+E EE071 Operating Manual

USER’S GUIDE

EE071 - Humidity and Temperature Probe with Modbus Interface

SCOPE OF SUPPLY

• EE071 probe according to ordering guide

• Inspection certicate according to DIN EN10204 - 3.1

CAUTION

For accurate measurement it is essential that the temperature of the probe and the sensing head is the same as the temperature of
the air to measure. Avoid mounting the EE071 transmitter in a way which creates temperature gradients along the probe.

• The device and mainly the sensing head shall not be exposed to extreme mechanical stress.

• The device must be operated with the lter cap on at all times. Do not touch the sensors inside the sensing head.

• While replacing the lter cap (because of pollution for instance) against an original E+E spare one please take very good care to

not touch the sensors.

DIMENSIONS

polycarbonate housing - EE071-HTPx

13

8

(0.3”)

(0.51”)

M12x1

75 (3”)

34 (1.34”)

metal housing - EE071-HTMx

8

(0.3”)

(0.47”)

12

(0.47”)

M12x1

12

L

1

L

2

12

(0.47”)

Filter L

Stainless
steel grid

H2O

2

1

79.5 mm

(3.13“)

73.5 mm (2.89“) 33 mm (1.3“)

L

2

38.5 mm

(1.52“)

CONNECTION DIAGRAM

EE071:

1...+UB

2...B-RS485 (= Data-)

3...A-RS485 (= Data+)

4...GND

Front view

Important:

The metal enclosure of EE071-HTM shall not be connected to the ground (electrical isolation necessary). Alternatively, the GND of
the EE071 power supply shall be connected to the earth potential.

M12x1 ange (HA010705, Accessories)

brown...+UB

white.....B-RS485 (= Data-)

blue......A-RS485 (= Data+)

M16x1.5

black....GND

grey......shielding

SETUP AND ADJUSTMENT

The EE071 is ready to use and does not require any conguration by the user. The factory setup of EE071 corresponds to the type
number ordered. For ordering guide please see data sheet at www.epluse.com/EE071. If needed, the user can change the factory
setup by using the USB conguration adapter (code HA011012) and the EE-PCS, Product Conguration Software.
One can change the digital settings and perform RH and T adjustment.

EE071

PC

HA011012

EE-PCS PRODUCT CONFIGURATION SOFTWARE

1. Download the EE-PCS Product Conguration Software from www.epluse.com/congurator and install it on the PC.

2. Connect the E+E device to the PC using the appropriate conguration cable.

3. Start the EE-PCS software.

4. Follow the instructions on the EE-PCS opening page for scanning the ports and identifying the connected device.

5. Click on the desired setup or adjustment mode from the main EE-PCS menu on the left and follow the online instructions of the
EE-PCS.

DIGITAL INTERFACE RS485 / MODBUS RTU

ID address, baud rate, parity and stop bits can be set via:

1. EE-PCS, Product Conguration Software and the appropriate conguration cable.

2. Modbus protocol in the register 60001 (0x00) and 60002 (0x01). See Application Note Modbus AN0103 (available on

www.epluse.com/EE071)

The EE071 factory setting for the slave-ID (Modbus address) is 247 as an integer 16 bit value.
The measured values are saved as a 32 bit oat value.
The serial number as ASCII-code is located at read register address 30001-30008 (16 bit per address).
The rmware version is located at register address 30009 (bit 15...8 = major release; bit 7...0 = minor release).

32Bit FLOAT (read register):

Function code +
Register number

30026 0x19 Temperature [°C]

30028 0x1B Temperature [°F]

30030 0x1D Rel Humidity [%]

30032 0x1F Abs Humidity [g/m³]

30034 0x21 Dew Point [°C]

30036 0x23 Dew Point [°F]

30038 0x25 Mixing ratio [g/kg]

(1)

[Dec]

Register address
[Hex]

(2)

Parameter
name

16Bit INTEGER (write register):

Function code +
Register number

(1) Register number starts from 1 3) Values are stored with a scaling of 1:100 (e.g.: 2550 is equivalent to 25.5°C)
(2) Register address starts from 0 4) Read function code: 0x03 Write function code: 0x10

5) Ambient pressure in mbar, with 2 decimal digits (e.g. 1008.25)

(1)

60001 0x00 Slave-ID

Register address

(2)

[Dec]

[Hex]

Parameter
name

16Bit INTEGER (read register):

Function code +
Register number

30040 0x27 Temperature [°C]

30041 0x28 Temperature [°F]

30042 0x29 Rel Humidity [%]

30043 0x2A Abs Humidity [g/m³]

30044 0x2B Dew Point [°C]

30045 0x2C Dew Point [°F]

30046 0x2D Mixing ratio [g/kg]

(1)

Register address

[Dec]

[Hex]

32Bit FLOAT (read & write register):

Function code +
Register number

5001

4)

(1)

Register address

(2)

[Dec]

[Hex]

0x1388 Air pressure

3)

(2)

Parameter
name

Parameter
name

5)

Example of MODBUS RTU command for reading the temperature (oat value) T = 26,652524 °C from the register 0x19

Device EE071; slave ID 247 [F7 in Hex]
Reference document, chapter 6.3: http://www.modbus.org/docs/Modbus_Application_Protocol_V1_1b.pdf

Request [Hex]: F7 03 00 19 00 02 EB 7B

Modbus ID

address

Request [Hex]: F7 03 00 19 00 02 EB 7B

Function

code

Starting

address Hi

Starting

address Lo

No. of

register Hi

No. of

register Lo

CRC

Response [Hex]: F7 03 04 38 5F 41 D5 0A E3

Modbus ID

address

Response [Hex]: F7 03 04 38 5F 41 D5 0A E3

Function

code

Byte count

Register 1

value Hi

Register 1

value Lo

Register 2

value Hi

Register 2

value Lo

CRC

For decoding of oat values (stored according standard IEEE754), please refer to AN0103, chapter 7.

Example

Response [Hex] Value in decimal

Byte 1

(Register 2 - Hi)

Byte 2

(Register 2 – Lo)

Byte 3

(Register 1 - Hi)

Byte 4

(Register 1 - Lo)

41 D5 38 5F 26.62524

NOTE:

The minimum accepted polling interval by device is 100 ms.
Please note the cycle of measuring of EE071 is one second:

• “measuring mode” = 250 ms. During this time the device read and process the parameters. Any request from master is refused

• “reading mode” = 750 ms. The data are available on register maps for reading from master.