Siemens SIMATIC S5 CP 521 Manual page 150

CP 521
CPU job request: "Send data" (B0
After you have output job A0
ment from the CP 521, output job B001
(PIQ).
Table 7-16.
Byte Value
0 B0
H
1 01
H
2
3
4
5
6
7
Byte 0: Job: Send data. After this job B0
as data.
Byte 1: Indicates the number of the data block being transferred (here: 1).
You must increment this block number in your user program -
beginning at 01
This continues until the whole data message has been transferred
to the CP 521.
GWA 4NEB 812 6030-02b
)
H
and received the corresponding acknowledge-
H
with the 1st data block of the message
H
Data Transfer: Sending the 1st Data Block
Meaning
Job: Send data
Number of the 1st data block
D a t a
, the CP 521 interprets bytes 2 to 7
H
- each time you send a data block to the CP 521.
H
ASCII Mode
7-27