Siemens SINAMICS S120 Installation And Start-Up Manual page 100

Communication via PROFIBUS
Cyclic communication
Table 4-5 Description of A_CTW1 (control word for A_INF), continued
Bit Meaning
8
Reserved
9
Controlled by PLC Controlled by PLC
10
Note:
This bit should not be set to "1" until the PROFIBUS slave has returned an appropriate status via
STW1.9 = "1".
11
12
13 Reserved
14
15
4-100
Comments
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Controlled by PLC
This signal must be set so that the process data
1
transferred from the PROFIBUS master to the
slave is accepted and activated.
Not controlled by PLC
The process data transferred from the
0
PROFIBUS master are discarded by the slave,
i.e. they are assumed to be zero.
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SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
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BI: p0854 BI: p0854
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E Siemens AG, 2004. All rights reserved
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