Lenze DDS System bus CAN for PLC Manual de usuario descargar pdf (Pagina 11)

System bus (CAN) for Lenze PLC devices

Preface and general information

1.1 About this Manual

1−3

PLC−Systembus EN 2.0

1.1.2 Structure of the description

The descriptions of the individual functions/function blocks as well as of system blocks contained

in this Manual have the same structure:













 Headline with SB identifier

 SB function and node number

 Short description of the SB and its most important features

 System block chart including all corresponding variables

· Input variables

· Output variables

 Table giving information about input and output variables:

· Identifier

· Data type

· Signal type

· Address

· Display code

· Display format

· Information

 Detailed functional description of the SB

Information on return values for a function

If it was not possible to carry out a function faultlessly, a negative return value is sent back,

representing an error number.

· Each error number is assigned to a corresponding error cause in the Meaning column.

· If different error numbers (−1, −2, ...) may apply, a specific digit (1, 2, ...) in the Priority column

additionally is assigned to the error number.

– The smaller this digit, the higher is the priority of the associated error number.

– If several error causes are available at the same time when a function is carried out, always

the error number with the highest priority is returned by the function.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 177 178

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Lenze DDS System bus CAN for PLC Manual de usuario Pagina 11