Jetter JC-3 Series, Руководство пользователя

Страница: 26 / 55

Jetter AG Control of alphanumeric HMIs | 3
Application-oriented manual – Control of alphanumeric HMIs (LCD) and printers 26
3.6.1 DisplayValue() STX command
Declaration
Function DisplayValue(Dev:Int,
Pos:Int,
Value:Double);
Parameter
Parameter Value Description
Dev 0 ... 4 Number of the device where to output
the value
Pos 1 ... maximum num-
ber of characters
shown on the screen Cursor position starting from where the
value is to be displayed
Value Value to be displayed Constant value, name of a register or a
variable
Tab. 17:
DisplayValue()
parameter
How to use this
command
Command-line syntax for displaying a value:
DisplayValue( 8 , 0 , - 12,345 );
DisplayValue( 8 , 0 , Axis2.Position);
Operating principle
The first STX command outputs the value -12,345 from cursor position 1 on-
wards. The second STX command outputs the content of variable Axis2.Position
from cursor position 25 onwards.
Both numericals are output to the default device (Dev = 0).
3.6.2 Configuring the screen size
Setting the length of the display field
MR 2812 defines the length of the display field for numerical values.
MR 2812 = Number of sign [+ decimal point]
Example
Parameter Description
Number of digits 6
Show sign (MR 2816) 0 (Yes)
Decimal point No
Field length (MR 2812) 7
Display 7 characters
Tab. 18: Setting the display field length – example