Siemens SIMATIC S5 CP 521 Manual page 120

CP 521
Example 1b: Setting the XON/XOFF listing
The same details apply as in example 1a.
Operand Signal States
QW 122 KH= 1113
QW 120 KH= 9020
GWA 4NEB 812 6030-02b
Meaning
Byte 2: XON character (DC 1 as ASCII code)
Byte 3: XOFF character (DC 3 as ASCII code)
Byte 0:"Transfer parameter setting data"
job
Byte 1: Parameter block 2
Print Mode
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