User Documentation

66
Supported operating systems – Graphic programming
2008050000/03/02-2018
INFOBEREICH
Die Angabe „MatNr/Version/Datum“ bzw. „1234560000/00/MM.YY“ ist als Textvariable deniert
und kann nur auf der „Rueckseite“ editiert werden. Die Textvariable erscheint in allen Doku-
menten dieses Buches, sobald eine Synchronisierung des gesamten Buches(!) durchgeführt
wird. ACHTUNG Die „Rueckseite” muss als Formatquelle(!) ausgewählt sein!
3.4.4 Group
Agroupidentiesamodulewithwhichprogrammingcanbemanagedmoreeasily.Agroupmodulehasonly
one input and one output. It ensures that all its inner components have been executed before the module
that is downstream of it is run.
• Repeaters have two group modules which are processed one after the other.
• Repeaters have two group modules of which only one is processed, as a function of the status of the
digital input 1.
3.4.5 Variables
Three groups of variables are available for programming: The user variables (global or local), the constants
(Boolean, numeric) and the system variables (measurement values).
• User variables:
User variables are variables which are personally set up and can be maintained locally or globally. A local
variableisonlyretrievableagainintheprograminwhichitwasdenedandcanthereforeonlybeused
locally. If a variable has been declared a global variable, it can also be retrieved in another program code
and can also be read out or written using the Modbus register. The auto save function saves the value if
a power failure occurs (persistence). User variables can be set up as Boolean variables (digital 1/0) or as
numeric variables.
• Constants:
Constantsarexedvalueswithwhichitispossibletoworkinprogramcode.Double-clicking(leftmouse
key)thevariableboxopensthecongurationlevel,whetherthexedvaluecanbeassigned.Heretoo,
variables can be set up as Boolean variables or as numeric values. The exception is the string variable: A
text can be saved with this.
• System variables:
System variables are measurement values provided by the device. All measurement data and calculated
values, such as consumption, can be retrieved with these variables and can be processed in the program
code.