Siemens SINAMICS S120 Installation And Start-Up Manual page 95

Table 4-3 Description of CTW1 (control word 1), continued
Bit Meaning
9 Reserved
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".
Direction of rotation Direction of rotation
11 11
changeover
12 Reserved
Motorized potentiometer, Motorized potentiometer
13
setpoint, raise
Motorized potentiometer, Motorized potentiometer
lower setpoint
14 14
Note:
If motorized potentiometer setpoint raise and lower are 0 or 1 simultaneously, the current setpoint
is frozen.
15 Reserved
CTW2 (control word 2)
See function diagram [2444]
E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
Comments
- -
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.
1 Direction of rotation changeover
0 No direction reversal
1 Motorized potentiometer, setpoint, raise
Motorized potentiometer setpoint raise not
0
selected
1 Motorized potentiometer, lower setpoint
Motorized potentiometer setpoint lower not
0
selected
- -
Communication via PROFIBUS
Cyclic communication
-
BI: p0854 BI: p0854
BI: p1113 BI: p1113
BI: p1035
BI: p1036
-
BICO
4-95