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MIW-RSTHM-2-EN-000 - 15 / 01 / 2019

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MODBUS REGISTER MAPS

INPUT REGISTERS

Data type

Description

Data

Values

1

Temperature reading

signed int.

Actual temperature level

-300—700 

500  =        

50,0 °C

2

Relative humidity level

unsigned int.

Actual relative humidity level

0—1.000  1.000 = 

100,0 % rH

3

Dew point

signed int.

Calculated dew point

 -700—700

200  =        

20,0 °C

4

Reserved, returns “0”.

5

 Ambient light intensity 

unsigned int.

Measured light intensity 

0—32.000  1.000 = 

1.000 lx

6

Active / standby

unsigned int.

Active or Standby indication according the Active / 
Standby light level defined via holding registers 34 
and 35. If the measured light level is between the 
two levels the indication is 0 (Low intensity)

0—2

0 = 
1 = 
2 = 

Low light intensity

Active

Standby 

7—10

Reserved, return “0”.

11

Output value 1 
(temperature)

unsigned int.

Analog output value for temperature (T)

0—1.000

0 =

1.000 = 

     0  %

100 %

12

Output value 2 (relative 
humidity)

unsigned int.

Analog output value for relative humidity (rH)

0—1.000

0  =   

1.000 = 

  0  %

100 %

13

Reserved, returns “0”.

14

Temperature alert flag

unsigned int.

Flag indicates that measured temperature is outside 
set alert values. Set to ‘1’ when the measured value 
is outside the temperature alert values defined by 
holding registers 20 and 21.

0—1

0 = 
1 = 

Measured temperature is OK

Measured temperature is too high/ low

15

Relative humidity alert flag

unsigned int.

Flag indicates that measured relative humidity 
is outside set alert values. Set to ‘1’ when the 
measured value is outside the relative humidity alert 
values defined by holding registers 22 and 23.

0—1

0 = 
1 =

Measured rH is OK

Measured rH is too high/ low

16

Reserved, return “0”.

17

Temperature range limit flag unsigned int.

Flag indicates that measured temperature is outside 
set range limit values. Set to ‘1’ when the measured 
value is outside the temperature range limit values 
defined by holding registers 14 and 15.

0—1

0 = 
1 =

Temperature range is OK

Temperature range is too high/ low

18

Relative humidity range 
limit flag

unsigned int.

Flag indicates that measured relative humidity is 
outside set range limit values. Set to ‘1’ when the 
measured value is outside the relative humidity limit 
range values defined by holding registers 16 and 17.

0—1

0 = 
1 =

rH range is OK

rH range is too high/ low

19

Reserved, returns “0”.

20

Humidity / temperature
sensor fault

unsigned int.

Flag indicates if the communication with the 
temperature and humidity sensor is lost.

0—1

0 = 
1 = 

No

Yes 

21

Reserved, returns “0”.

22

Ambient light sensor fault

unsigned int.

Flag that shows if the communication with the 
ambient light sensor is lost.

0—1

0 = 
1 = 

No

Yes 

HOLDING REGISTERS

Data type

Description

Data

Default

Values

1

Device slave address

unsigned int.

Modbus device address

1—247

1

 

2

Modbus baud rate

unsigned int.

Modbus communication baud rate

0—6

2

0 = 

1  =        

2 = 

3 = 

4 =

5 =

6 =  

      4.800

9.600

19.200

38.400

 57.600

115.200

230.400

3

Modbus parity mode

unsigned int.

Parity check mode

0—2

1

0 =

1 = 

2 = 

     8N1

 8E1

8O1

4

Device type

unsigned int.

Device type 

(Read only)

RSTHM-2 = 1094

 

5

HW version

unsigned int.

Hardware version of the device 

(Read only)

XXXX

0x0100  =      

 HW version 1.00

6

FW version

unsigned int.

Firmware version of the device 

(Read only)

XXXX

0x0100  =       

FW version 1.00

7—13

Reserved, return “0”.

14

Minimum temperature 

range

unsigned int.

Minimum value of the temperature 

range; cannot be set higher than max. 

temperature range minus 5

º

0 — (Max. range — 50) 

0

100 = 

10,0 °C

15

Maximum temperature 

range

unsigned int.

Maximum value of temperature 

range; cannot be set lower than min. 

temperature rang e plus 5

º

(Min. range + 50) – 500

500

500 = 

50,0 °C

RSTHM-2

COMBINED T AND RH 
ROOM TRANSMITTER

Содержание RSTHM-2

Страница 1: ...Mounting and operating instructions RSTHM 2 COMBINED T AND RH ROOM TRANSMITTER ...

Страница 2: ...DES 4 INTENDED AREA OF USE 4 TECHNICAL DATA 4 STANDARDS 4 OPERATIONAL DIAGRAMS 5 MOUNTING OPERATING INSTRUCTIONS IN STEPS 5 OPERATING INSTRUCTIONS 7 VERIFICATION OF INSTALLATION INSTRUCTIONS 8 MODBUS REGISTER MAPS 8 TRANSPORT AND STORAGE 10 WARRANTY AND RESTRICTIONS 10 MAINTENANCE 10 RSTHM 2 COMBINED T AND RH ROOM TRANSMITTER ...

Страница 3: ... possible avoid condensation All installations shall comply with local health and safety regulations and local electrical standards and approved codes This product can only be installed by an engineer or a technician who has expert knowledge of the product and safety precautions Avoid contacts with energised electrical parts always treat the product as if it is live Always disconnect the power sup...

Страница 4: ...oor use only TECHNICAL DATA Maximum power consumption 0 0 312 W Nominal power consumption in normal operation 0 0 234 W Imax 13 mA Selectable temperature range 0 50 C Selectable relative humidity range 5 85 Ambient light sensor with adjustable active and standby level Bootloader for updating the firmware via Modbus RTU communication 3 LEDs for status indication Accuracy 0 4 C 0 50 C 3 rH 5 85 rH d...

Страница 5: ...G INSTRUCTIONS IN STEPS Before you start mounting the RSTHM 2 room transmitter read carefully Safety and Precautions Choose a smooth surface for installation a wall panel and etc Follow these steps 1 Using a flat screwdriver remove the front white cover by releasing the snap fits on its both sides see Fig 1 Snap fits release 2 Insert the crimped RJ45 cable through the opening on the rear plate and...

Страница 6: ...floor 4 Do the wiring according to the wiring diagram see Fig 4 Fig 4 Wiring diagram B A GND 24 VDC 8 mm 8 mm 8 mm 8 mm RJ45 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 24 VDC GND A B Supply voltage 24 VDC Ground Modbus RTU communication signal A Modbus RTU communication signal B B A GND 24 VDC 8 mm 8 mm 8 mm 8 mm RJ45 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 5 Put back the cover and snap it in 6 Switch on the mains s...

Страница 7: ... enter Boot mode put a jumper onto pins 3 and 4 of the P1 header and restart the power supply see Fig 5 Once Boot mode is activated the firmware can be updated via SM Boot application part of 3SModbus software suite or Sensistant Fig 5 P1 header 1 2 3 4 5 Put a jumper onto pins 1 and 2 and wait for at least 5 seconds to reset the Modbus communication parameters 1 2 3 4 5 Put a jumper onto pins 3 a...

Страница 8: ...in luxes If the measured light level is below the Standby level Input Register 6 indicates Standby If the measured ambient light level is above the Active level Input Register 6 indicates Active If the measured ambient light level is between the Active and Stand by level Input Register 6 indicates Low intensity therefore it is advisable to set Active and Standby levels in Holding Registers 34 and ...

Страница 9: ...int Flag indicates that measured temperature is outside set range limit values Set to 1 when the measured value is outside the temperature range limit values defined by holding registers 14 and 15 0 1 0 1 Temperature range is OK Temperature range is too high low 18 Relative humidity range limit flag unsigned int Flag indicates that measured relative humidity is outside set range limit values Set t...

Страница 10: ...y connecting NBT 0 1 0 0 1 NBT disconnected NBT connected 31 33 Reserved return 0 34 Active light level unsigned int The ambient light level above which Active is indicated in input register 6 0 32 000 100 100 100 lx 35 Standby light level unsigned int The ambient light level below which Standby is indicated in input register 6 0 32 000 10 10 10 lx 36 Modbus registers reset unsigned int Resets Mod...

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