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Chapter 6 – Communication
Installation and Start-up Guide for NPBA-01
6-10
The Control Word
The Control Word is PROFIBUS Parameter No. 967. The contents of
the Control Word is presented in the following table. The text in
italics
refers to the states in Figure 6-1, page 6-14
(ACS 600/PROFIBUS
State Machine).
Table 6-3 The Control Word.
Bit
Value
Description
0
1
Enter
READY TO START
0
Stop according to ramp (
STOP 1)
1
1
Ready
0
Coast to stop
(STOP 2)
2
1
Ready
0
Stop according to stop type selected with Parameter 21.3
(STOP 3)
3
0
⇒
1
Start if bits 0 to 2 are ON (1).
0
Coast to stop
(RUN DISABLE)
4 to 6
1
Normal operation
0
Stop according to stop type selected with Parameter 21.3
7
0
⇒
1
Fault reset (enter
DRIVE DISABLE)
0
No reset performed
8 and 9
Unused
10
1
The Control Word and the frequency reference (from PROFIBUS)
are activated
0
The Control Word and the frequency reference (from PROFIBUS)
are not activated. Old values are retained
11
1
External reference 2 selected
0
External reference 1 selected
12 to 15
Unused