Siemens SIMATIC S5 Equipment Manual page 186

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9.6.2 Modification of Parameterized Initial and End Values
Meaning of the B bit: At the first parameterization of an initial or an end setpoint the B bit is irrele-
vant.
If a track needs to be modified, there are the following possibilities:
— The set B bit erases the initial or end value in the selected track. A possible assigned setpoint is
irrelevant.
This method is for modifying single tracks. The software-based erasing in section 9.6.4 is rec-
ommended for erasing all tracks.
– B bit= "O" replaces the old setpoint with a new setpoint (in the selected track).
Rotary axis, only channel 1
Rotary axis, only channel 2
Rotary axis, channels 1 and 2
Example: rotary axis on channel 2 only and 1P module address at 128
Example: parallel switching mode and module address at 144
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KH
F4
F5
I
E7
OB 20:
128
+
BE
OB 21 :
144
+
BE
Programming Instructions
KM
11110100
11110101
11100111
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4
4
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