Siemens SINUMERIK 840D sl Function Manual page 1428

Detailed description
2.12 Block descriptions
2.12.6 FB 7: PI_SERV2 General PI services
Description of Functions
A detailed description of the FB 7 is contained in the description of FB 4.
The FB is multi-instance-capable. The call is permitted only in cyclic program OB1. An
assignment for all parameters with Req = 0 is also permitted in OB100.
The only difference to FB 4 is the number of WVar1 and subsequent parameters. These are
defined in FB 7 from WVar1 to WVar16 (FB 4 in the VAR_INPUT from WVar1 to WVar10).
All other parameters are identical to FB 4.
This PI server can be used for all PI services previously implemented with FB 4. In addition,
the PI services listed below can only be executed with FB 7.
Declaration of the function
FUNCTION_BLOCK FB 7
Var_INPUT
END_VAR
VAR_OUTPUT
END_VAR
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Req : BOOL ;
PIService : ANY ;
Unit : INT ;
Addr1 : ANY ;
Addr2 : ANY ;
Addr3 : ANY ;
Addr4 : ANY ;
WVar1 : WORD ;
WVar2 : WORD ;
WVar3 : WORD ;
WVar4 : WORD ;
WVar5 : WORD ;
WVar6 : WORD ;
WVar7 : WORD ;
WVar8 : WORD ;
WVar9 : WORD ;
WVar10 : WORD ;
WVar11 : WORD ;
WVar12 : WORD ;
WVar13 : WORD ;
WVar14 : WORD ;
WVar15 : WORD ;
WVar16 : WORD ;
Error : BOOL ;
Done : BOOL ;
State : WORD ;
Basic logic functions: PLC basic program solution line (P3 sl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0