Jetter AG
Control of alphanumeric HMIs | 3
Application-oriented manual – Control of alphanumeric HMIs (LCD) and printers
33
MR 2817
UserInput state
This module register contains the state of the
UserInput()
command. To abort
an active STX
UserInput()
command, enter the value 0 in MR 2817.
Property
Description
Reading values
0
No UserInput active
1
UserInput active
Writing values
0
Aborting UserInput
Tab. 34: UserInput state
3.8 Querying the keys
Mapping of keys
The controller maps the keys of the HMIs to the following variables:
■
Special flags
■
Bits in registers that overlay special flags
Flags and register bits can have the following states:
Key
Special flag/register bit
Pressed
TRUE/1
Not pressed
FALSE/0
INFO
Limitations
While inputting numerical values, the keys used for this are
not mapped to the key flags and register bits.
Keys used for
entering numericals
Key
Description
[0] ... [9]
Enters a numerical value
[.] or [,]
Enters a decimal point or decimal comma
[-]
Enters a negative/positive numerical value;
you can press the key any time during input.
[C]
Clears current entry;
Displays suggested value again
ENTER ([↵])
Terminates the input process; confirms the input
Tab. 35: Keys used for entering numericals
