Siemens SIMATIC S5 CP 523 Manual page 139

Communications Mode
Transferring parameter setting data for parameter block 2
Table 7-16. Transfer Memory Assignments for "Transfer Parameter Setting Data
Byte
0 Job number
"Transfer parameter setting data"
1 Bits 4 to 7: Parameter block number
Bits 0 to 3: Relevant for parameter
2 XON character
3 XOFF character
4 to 7 Irrelevant
7-34
for Parameter Block 2"
Description
blocks 7 and 9 only
Possible Values
90
H
20
H
01 to 7E
H H
01 to 7E
H H
-
CP 523
Default Values
on the CP 523
-
-
FFFF
H
(No XON/XOFF
protocol)
-
EWA 4NEB 811 6044-02a