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Siemens
Building Technologies
Pressing key SET+DOWN will write value "1" to the Holding register 138. Then a
2-second pulse will be created.
4.2.3
Alarm history records clean up
On the alarm history page, press and hold key SET+ESC to clear all the history
alarm records.
Pressing key SET+ESC will write value "1" to the Holding register 139. Then a 2-
second pulse is created.
4.3
Display value configuration
The following displayed values need to be assigned to the input register according
to the Modbus register list (refer to
4.3.1
Temperature display
The engineering unit of temperature displayed on the HMI-LED screen is "°C".
For example, for controller "B1" which connects to NTC sensor, there is a
temperature variable as below.
The temperature variable is sent to the Input register 2, and the "VL_Unit" needs
to be defined as "1". If the temperature variable is with one factional digital, the
"VL_Factional" should also be defined as "1".
HMI-LED
HMI-LED Programming
Chapter 5 Appendix - Modbus register list).
CB1P3946en
2013-08-19
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