MP 277 - Service, Support Download

Transcript
Operating a project
8.4 Entering values using the touch screen
Formats for numerical values
You can enter values in numerical text boxes based on the following formats:
● Decimal
● Binary
● Hexadecimal
Note
Entry of hexadecimal values
When you enter values in hexadecimal format, the alphanumerical screen keyboard
opens.
Limit test of numerical values
Tags can be assigned limits. If you enter a value that lies outside of this limit, it will not be
accepted, for example, 80 with a limit of 78. In this case the HMI device will deliver a system
alarm, if an alarm window is configured. The original value is displayed again.
Decimal places for numerical values
The configuration engineer can define the number of decimal places for a numerical text box.
The number of decimal places is checked when you enter a value in this type of I/O field.
● Decimal places in excess of the limit are ignored.
● Empty decimal places are filled with "0".
MP 277
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Operating Instructions, 07/2014, A5E02479740-02