Siemens SIMATIC S5 Manual page 318

STEP 5 Programming
FB 24 - TRANSFER
In the example, the TRANSFER command is allowed only as long as the job is not
yet "TERMINATED". It is used to forward a speed modification (override) or start
a traversing program block in Single Block mode.
START
yes
Job terminated?
no
Evaluate auxiliary
and edge flags in
dependence on the
input
yes
Edge flag = 0?
no
Load bit 4 = 1 into
FY 6
END
FB 25 - TOGGLE bit
The TOGGLE bit must be inverted to enable the IP 266 to recognize a job as being
a new job.
If the nth job was started with TOGGLE = "1", job n + 1 must be started with
TOGGLE = "0". In FB 25, the STEP 5 operations AW and OW were used to invert
the TOGGLE bit.
9-30
FB 24 - NAME:TRANS
Programming the auxiliary and edge flags for the TRANSFER
command
When job terminated abort
A I 66.7
BEC
Programming the auxiliary and edge flags
A I 3.5
AN F 4.6
= F 4.7
A I 3.5
= F 4.6
Edge flag not yet set abort
AN F 4.7
BEC
L KB 16
T FY 6
BE
IP 266
TRANSFER
EDGE FLAG
TRANSFER
TRANSFER COMMAND
EWA 4NEB 812 6057-02