Siemens SIMATIC S5 CP 523 Manual page 198

Using the "SEND" and "Receive" Function Blocks CP 523
SEGMENT 4 Calculating the "Number of Send frames"
Establish "SEND" connection to the CP 523
SEGMENT 5
2
Transfer send length to the CP
Transfer end-of-text character
to the CP
Transfer "SEND" ID to the CP
Evaluate job acknowledgement
SEGMENT 6 from CP 523
Read acknowlegement from CP
Acknowledgement
Yes
with error?
No
Load number of message blocks to
Output error message
be sent from the CP
ENDE
3
8-8
EWA 4NEB 811 6044-02a