E+E Elektronik HTS801, Руководство пользователя

Страница: 40 / 64

User Manual HTS801
Humidity and Temperature Sensor for High Humidity and Chemically Polluted Conditions | 40
NOTICE
When reading the serial number or the sensor name, it is always necessary to read all 8 registers, even if the
desired information requires less.
NOTICE
For obtaining the correct floating point values, both registers have to be read within the same reading
cycle. The measured value can change between two Modbus requests, exponent and mantissa may get
inconsistent then.
Device settings (INT16)
Parameter Register number
1)
[Dec] Register address
2)
[Hex]
Write register: function code 0x06
Modbus address
1 00
Modbus protocol settings
3)
2 01
ARC trigger 509 1FC
Device information (INT16)
Parameter Register number
1)
[Dec] Register address
2)
[Hex]
Read.register:.function.code.0x03./.0x04
Serial number sensor (as ASCII) 1 00
Firmware version 9 08
Sensor name (as ASCII) 10 09
Serial number smart probe (as
ASCII)
18 11
ARC remaining seconds 510 1FD
Device status 609 260
Module status 610 261
Device operating conditions 611 262
1) Register number starts from 1.
2) Protocol address starts from 0.
3) For Modbus protocol settings see Application Note Modbus AN0103 (available at www.epluse.com/hts801 ).
Tab. 6 HTS801 registers for device setup
For highest accuracy of RH related calculated parameters, the user can set the working pressure at the operating
point using the “process pressure” register or PCS10.
The HTS801 features a simulation mode which supports easy commissioning and enables testing of customer
data acquisition and modbus communication.
For configuration, please refer to Tab. 7 below.