Hmi-Led Programming; Basics; Initialization Of Modbus Communication; Register Assignment - Siemens Climatix HMI-LED POL831.25/STD Basic Documentation

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4

HMI-LED Programming

4.1

Basics

When the HMI-LED is connected with Climatix controller, the controller needs to
prepare the display value and parameter according to the Modbus register list
(refer to Chapter 5 Appendix - Modbus register list).
4.1.1

Initialization of Modbus communication

The following function block should be implemented in SAPRO.
4.1.2

Register assignment

The object or variable in SAPRO must be assigned to the register (Only the Input
register and Holding register are supported in the HMI-LED) according to the
Modbus register list (refer to
There are two ways to assign the register: self-define global variable (recommend)
and mapping.
Using mapping method, users need to define the corresponding automation object
in SAPRO, such as aoAnaloginput etc, and the objects where the engineering unit
and factional digital are stored. Then the objects need to be mapped in SCOPE.
Here is an example about how to program with mapping method in SAPRO.
HMI-LED
HMI-LED Programming
Chapter 5 Appendix - Modbus register list).
CB1P3946en
2013-08-19