P3: Basic PLC Program for SINUMERIK 840D sl
13.13 Block descriptions
Basic Functions
944 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Pulse diagram
Call example
Writing of three channelspecific machine data of channel 1:
Select the three data with NC VAR selector and store in the file DB120.VAR:
Entry NCVAR for DB 120 with the S7 SYMBOL Editor:
File DB120.AWL must be compiled and transferred to the PLC.
Call and parameterization of FB 3 with instance DB 111:
(1) Activation of function
(2) Positive acknowledgment: variables have been written
(3) Reset function activation after receipt of acknowledgment
(4) Signal change by means of FB
(5) Not permissible
(6) Negative acknowledgment: Error has occurred, error code in output parameter state
Area Block Name Type Byte S7 Name
C[1] RP rpa[5] DOUBLE 4 rpa_5C1RP
C[1] RP rpa[11] DOUBLE 4 rpa_11C1RP
C[1] RP rpa[14) DOUBLE 4 rpa_14C1RP
Symbol Operand Data type
NCVAR DB 120 DB 120
DATA_BLOCK DB 111 //Unassigned user DB, as instance for FB 3
FB 3
BEGIN
Function FC "VariablenCall": VOID
END_DATA_BLOCK
U I 7.7; //Unassigned machine control panel key
I M 100.0; //Activate req.
U M 100.1; //Done completed message
R M 100.0; //Terminate job
U I 7.6; //Manual error acknowledgment
U M 102.0; //Error pending
'RQH
5HT
(UURU
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