Siemens SINUMERIK 840Di Function Manual page 1396

Detailed Description
2.12 Block descriptions
Functions
1: Signals for synchronized actions to channel:
2: Signals for synchronized actions from channel:
Synchronized actions can be disabled or enabled by the PLC.
The data area is stored on the user interface in DB21 to DB30.DBB 300..307 (to channel)
and DBB 308..315 (from channel). Parameter "S7Var" is not evaluated for this function, but
must be assigned an actual parameter (see call example). The data are transferred to/from
the NC as soon as FC 21 is processed.
The following signals are relevant:
Signal
Enable
Funct
S7Var
IVAR1
Error
ErrCode
Call example
FUNCTION FC 100: VOID
VAR_TEMP
END_VAR
BEGIN
NETWORK
...
// Deactivate synchronized actions with ID3, ID10 and ID31 in NC channel 1 :
// Synchronized actions from NCK channel:
SYVK:
2-202
Type Type
I Bool
I Byte
I Any
I Int
Q Bool
Q Int
myAny: ANY ;
SYAK: TO DB21;
SET;
S DBX300.2; //ID3
S DBX301.1; //ID10
S DBX303.6; //ID31
L B#16#1;
T MB11;
SPA TRAN;
L B#16#2;
T MB11;
Value range Remarks
1 = FC 21 active
1, 2 1: Synchronized actions to channel
2: Synchronized actions from
channel
S7 data storage area Not used
1..MaxChannel Channel number
1 : "Funct" invalid
10: Channel no. invalid
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
PLC Basic Program Solution Line (P3 sl)