Technical data

Table Of Contents
SFCs for Distributed I/Os or PROFINET IO
System Software for S7-300/400 System and Standard Functions - Volume 1/2
16-8
A5E00709327-01
Parameter Declaration Data Type Memory Area Description
MODE INPUT BYTE I, Q, M, D, L,
constant
Job ID (coding complying with EN 50 170
Volume 2, PROFIBUS)
Bit 0: reserved (value 0)
Bit 1: reserved (value 0)
Bit 2 = 1: UNFREEZE is executed
= 0: no meaning
Bit 3 = 1: FREEZE is executed
= 0: no meaning
Bit 4 = 1: UNSYNC is executed
= 0: no meaning
Bit 5 = 1: SYNC is executed
= 0: no meaning
Bit 6: reserved (value 0)
Bit 7: reserved (value 0)
Possible values:
with exactly one ID per job:
-
B#16#04 (UNFREEZE)
-
B#16#08 (FREEZE)
-
B#16#10 (UNSYNC)
-
B#16#20 (SYNC)
with more than one ID per job:
-
B#16#14 (UNSYNC, UNFREEZE)
-
B#16#18 (UNSYNC, FREEZE)
-
B#16#24 (SYNC, UNFREEZE)
-
B#16#28 (SYNC, FREEZE)
RET_VAL OUTPUT INT I, Q, M, D, L If an error occurs while the function is active,
the return value contains an error code.
You must evaluate RET_VAL each time
after the block has been executed.
BUSY OUTPUT BOOL I, Q, M, D, L BUSY=1:
The SYNC/FREEZE job is not yet completed.