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MIW-RSTHX-2-EN-000 - 06 / 11 / 2019
8 - 9
ATTENTION
t
Do not expose to direct sunlight!
OPERATING INSTRUCTIONS
Calibration procedure
All sensor elements are calibrated and tested in our factory. Recalibration is not
necessary.
Bootloader
Thanks to the bootloader functionality, the unit firmware can be updated via Modbus
RTU communication. With 3SM boot Application (part of 3SM center software
suite), ‘boot mode’ is automatically activated and the firmware can be updated.
NOTE
Make sure the power supply does not get interrupted during “bootload” procedure,
otherwise you risk losing unsaved data.
LED indications
1.
When the green LED is on, the measured value (temperature or relative humidity)
is between the minimum and maximum alert range values (
Fig. 5 - 1
).
2.
When the yellow LED is on, the measured value (temperature or relative humidity)
is in the alert range (
Fig. 5 - 2
).
3.
When the red LED is on, the measured value (temperature or relative humidity)
is below the minimum measurement range value or above the maximum value.
Blinking red LED indicates loss of communication with a sensor (
Fig. 5 - 3
).
Fig. 5 LED indications
3
2
1
By default, the LED indication refers to temperature measurements. This can be
changed to relative humidity values via Modbus Holding Register 79 (see
Table
Holding registers
in the product Modbus Register Map
).
NOTE
NOTE
Green LED intensity can be adjusted between 0 and 100 % with a step of 10 %
according to the value set in Holding register 80.
Ambient light sensor
The measured light intensity in lux is available in Input Register 41. Additionally,
an active and standby level can be defined in Holding registers 35 and 36. Input
Register 42 indicates if the measured value is below standby level, above active
level or in between both levels:
■
Ambient light level < standby level: Input Register 42 indicates “Standby”.
■
Ambient light level > active level: Input Register 42 indicates “Active”.
■
Standby level < Ambient light level < Active level: Input Register 42 indicates “Low
intensity”.
RSTHX-2
COMBINED TEMPERATURE AND RELATIVE
HUMIDITY ROOM TRANSMITTER
