Sercos3_IDNCmd (FB)

FUNCTION_BLOCK Sercos3_IDNCmd

This function block allows to execute commands in the Sercos slave.

InOut:

Scope

Name

Type

Initial

Comment

Input

xExecute

BOOL

On a rising edge at this input the command in the slave will be started. In order to get the internal channel deallocated, the instance must be called at least once by “xExecute:= FALSE”.

xAbort

BOOL

FALSE

If this parameter is TRUE, the current command will be aborted.

usiCom

USINT

1

Number of the Sercos III master: If only one Sercos III master is used, usiCom is ‘1’. In case of multiple masters use ‘1’ for the first, ‘2’ for the second, etc.

uiAddress

UINT

Topological address or Sercos address, depends on the parameter xIsSercosAddress

xIsSercosAddress

BOOL

FALSE

This input switches between topological address and Sercos address FALSE: uiAddress is the topological address TRUE: uiAddress is the Sercos address

usiChannel

USINT

1

Reserved for future extensions. Currently not used.

dwIDN

DWORD

IDN (Identification Number) with 4 Bytes (SI (structure instance) and SE (structure element))

udiTimeOut

UDINT

Here you can set a timeout in milliseconds. If the execution of the command has not been finished within this time, an error message will be generated.

Output

xDone

BOOL

This output is TRUE as soon as the command has been finished successfully.

xBusy

BOOL

This output is TRUE as long as the execution of the command has not been finished.

xError

BOOL

This output is TRUE, if an error is detected. eError will show the cause.

eError

SERCOS3_ERROR

This output shows the cause of the detected error, which is indicated by xError. For example ‘SERCOS3_TIMEOUT’ in case of an timeout.

udiSercosError

UDINT

Error code if the function block has not been finished successfully.