Lenze DDS System bus CAN for PLC - Manual (Page 10)

1.1 About this Manual
System bus (CAN) for Lenze PLC devices
Preface and general information
1−2
L
PLC−Systembus EN 2.0
1.1.1 Conventions used in this Manual
This Manual uses the following conventions to distinguish between different types of information:
Variable identifier
... are presented in italics in the explanatory text:
·
"Via wDrvNr..."
Tip!
Information about the conventions used for variables of Lenze system blocks, function blocks and
functions can be obtained from the appendix of the DDS online documentation "Introduction into
IEC 61131−3 programming".The conventions ensure universal and uniform labelling and support the
readability of PLC programs.
Lenze functions/function blocks
... can be identified by their designation. They always start with an "L_":
·
"The function L_CanInit ..."
·
"The L_CanPdoTransmit FB..."
Program listings
... are specified in the "Courier" font, the keywords being printed bold:
·
"IF (ReturnValue < 0) THEN..."