L-force | plc designer – Lenze PLC Designer PLC Designer (R3-1) User Manual

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L-force | PLC Designer

Programming Reference



DMS 4.1 EN 03/2011 TD29

963

Function block instances and variables of user-defined data types as a prefix get a
shortcut for the FB- resp. data type name (for example: sdo).
Example:

cansdoReceivedTelegram: CAN_SDOTelegram;

TYPE CAN_SDOTelegram : (* prefix: sdo *)
STRUCT
wIndex:WORD;
bySubIndex:BYTE;
byLen:BYTE;
aby: ARRAY [0..3] OF BYTE;
END_STRUCT
END_TYPE

Local constants (c) start with prefix c and an attached underscore, followed by the type
prefix and the variable name.
Example:

VAR CONSTANT
c_uiSyncID: UINT := 16#80;
END_VAR

For Global Variables (g) and Global Constants (gc) an additional prefix + underscore is
attached to the library prefix:
Examples:

VAR_GLOBAL
CAN_g_iTest: INT;
END_VAR
VAR_GLOBAL CONSTANT
CAN_gc_dwExample: DWORD;
END_VAR