Siemens SIMATIC S5 CP 521 Manual page 131

ASCII Mode
Parameter setting data for parameter block 2
Table 7-3. PIQ for the "Transfer the parameter setting data for
parameter block 2" Job
Byte Meaning
Job number
0
Number of the parameter block
1
XON/XOFF protocol
2
XON/XOFF protocol
3
Not significant
4 to
7
7-8
Value
Range
90
H
20
H
XON character 00 to 7F
H
no protocol FF
H
XOFF character 00 to 7F
H
no protocol FF
H
00
H
CP 521
Default Values
on the CP 521
-
-
H
FFFF
H
(no XON/XOFF
H
protocol)
to FF -
H
GWA 4NEB 812 6030-02b