Difference between revisions of "MC-Basic:PROCEDURECHANGEBIT"
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Revision as of 09:19, 22 May 2014
Its parameter equal to <axis>.PROCEDURECHANGEBIT .
It is changed from 0 to 1 when a SERCOS procedure terminates when completed or when an error occurrs during procedure execution. SERCOS procedures are initiated by writing the value "3" to the relevant IDN. The procedure state is queried using the IDNSTATE query.
The procedure change bit is generated by the SERCOS amplifier and appears in bit number 5 of the amplifier’s status word.
The procedure change bit is used to determine when procedure execution has terminated. After termination, the procedure must be cancelled.
Short form
PCB( )
Syntax
?ProcedureChangeBit(<drive address>)
Availability
Since Version 4.5.15
Type
Long
Range
<drive address>: 1 to 254
Returned value : 0 or 1
Scope
Configuration, Task or Terminal
Limitations
- Read only
- SERCOS ring is closed (Phase 2 or 4 according to procedure condition)
- Not supported in EtherCAT system
Examples
WriteIdnValue Drive = A1.Dadd Idn = 99 Value = 3 ‘Start Procedure
While ProcedureChangeBit(A1.DAdd) = 0‘Wait for procedure to terminate
End While
If IdnState(a1.dadd, 99) <> 3 then ‘Check how procedure terminated
Print “Reset Faults procedure failed”
End If
WriteIdnValue Drive = A1.Dadd Idn = 99 Value = 0 ‘Cancel Procedure