Siemens SIMATIC S5 CP 521 Manual page 157

ASCII Mode
STL FB 1 (Continued)
:
M002 :L IW 120
:L KH F00F
:AW
:L KH 5000
:! = F
:
:
:R F 80.0
:
:BE
7-34
Explanation (Continued)
If data has been transferred from the CPU
to the CP free of errors, and if the send
length entered in the coordination job has
been reached, flag 80.0 is reset.
CP 521
GWA 4NEB 812 6030-02b