Siemens SINUMERIK 840Di Function Manual page 1330

Detailed Description
2.12 Block descriptions
Description of formal parameters
The following table shows all formal parameters of the function PI_SERV2.
Signal
Req
PIService
Unit
Addr1 to
Addr4
WVar1 to WVar16
Error
Done
State
Overview of additional PI services
The following section provides an overview of the PI services that can be started from the
PLC. The meaning and application of the general FB 7 input variables (Unit, Addr..., WVar...)
depends on the individual PI service concerned.
PI service
TMFPBP
Empty location search
TMFPBP
Function:
(dependent on parameter assignment)
This service searches the magazine(s) named in the relevant parameters for an empty
location, which meets the specified criteria (tool size and location type). The result of the
empty location search can be fetched from variables magCMCmdPar1 (magazine number)
and magCMCmdPar2 (location number) in block TMC when the service has functioned
correctly. As the PI service stores a result in variables magCMCmdPar1 and
magCMCmdPar2, the service must be protected by the semaphore mechanism (PI service
MMCSEM) with the function number for _N_TMFDPL in cases where several control units or
PLCs are operating on one NC.
2-136
Type Type Value range
I Bool
I Any [DBName].[VarName]
default is:"PI".[VarName]
I Int 1...
I Any [DBName].[VarName]
I Word 1...
Q Bool
Q Bool
Q Word
Function
Empty location search
Remarks
Job request
PI service description
Area number
Reference to strings specification according to
selected PI service
Integers or word variables. Specification according
to selected PI service
Negative acknowledgment of job or execution of
job impossible
Job has been executed successfully
See error identifiers
Available in
840D/810D
+
PLC Basic Program Solution Line (P3 sl)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0