Process Temperature Sensor Calibration - Honeywell SMV800 User Manual

Reset Corrects for Differential Pressure manually by writing to Modbus
registers:
1. Write the date in the DDMMYY-- format in the calibration date register. (Register
address 125-126)

The date to be written as month and day followed by the year.

Year to be entered as year -1900.
For example, to enter calibration date as June 10
126 as 0x0A067600
2. Write to single coil address 9 as ON

4.1.3. Process temperature sensor calibration

Navigate to Maintenance->Calibration and Correction Records->Process Temperature
Calibration to perform PT Calibration using SMV Modbus Manager application tool.
The Process Temperature Calibration screen has following options.
1. PT High Point Calibration
2. PT Low Point Calibration
3. PT Reset Corrects
4. Records that include Current, Last and Previous Calibration/Corrects dates.
By default, Records show the date as Jan 01 1972.
Page 180 SMV800 Modbus User's Guide
th
2018 write to register 125-
Revision 1.0