Jetter AG
Controlling printer and serial interfaces | 4
Application-oriented manual – Control of alphanumeric HMIs (LCD) and printers
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Setting the sign option
MR 2816 defines whether or not the sign is displayed.
To set the display field length in MR 2812 correctly, include the sign's place into
the calculation, even if no sign is to be displayed.
Example
Parameter
Description
Number of digits
6
Show sign (MR 2816)
1 (No)
Decimal point
No
Field length (MR 2812)
7
Display
6 characters
Tab. 60: Setting the sign option – example
Setting the number of decimal places
MR 2810 defines the number of decimal places.
Displaying decimal places might require adjustment of the display field length in
MR 2812.
The reason: The decimal point uses one place in the display field.
Setting the numerical value format
Numericals can be displayed in either decimal or hexadecimal format.
Flag 2060 sets the format of numerical values.
4.5.3 Register description
MR 2810
Number of decimal places for DisplayValue
This module register contains the number of decimal places to be displayed for
numerical values.
Property
Description
Values
0 ... 4
Takes effect
Upon next execution of STX
DisplayValue()
com-
mand
Tab. 61: Number of decimal places for DisplayValue
MR 2812
Field length for DisplayValue
This module register contains the length of the display field.
Property
Description
Values
1 ... 12
Value after reset
11
Takes effect
Upon next execution of STX
DisplayValue()
com-
mand
Tab. 62: Field length for DisplayValue
