![background image](http://html1.mh-extra.com/html/danfoss/vlt-3006/vlt-3006_product-manual_3613657076.webp)
75
MG.30.A7.02 - VLT
®
is a registered Danfoss trademark
According to the data format, 1 byte
consists of 8 data bits, but in the control
word only the 4 least significant bits of
each byte are used, so that ASCII charac-
ters from A to 0 can be used. The table
below shows the significance of the indi-
vidual bits of the control word:
Control words, bytes 5-8 in the telegram
The control word is used to send control
commands from a master (e.g. a PC) to
the VLT
®
frequency converter.
Serial data interface,
group 5..
(continued)
Groups
Bit 00, OFF1/ON1:
Ordinary ramp stop which uses the ramp
time in parameter 215/216. Bit 00 = “0”
means stop, bit 00 = “1” means that the
frequency converter can start if the other
start conditions are fulfilled.
Bit 01, OFF2/ON2:
Free-wheeling stop. Bit 01 = “0” means
free-wheeling stop, bit 01 = “1” means that
the frequency converter can start if the
other start conditions are fulfilled.
Bit 02, OFF3/ON3:
Quick stop, which uses the ramp time in
parameter 218. Bit 02 = “0” means quick
stop, bit 02 = “1” means that the frequency
converter can start if the other start condi-
tions are fulfilled.
Bit 03, Free-wheeling/possible:
Free-wheeling stop. Bit 03 = “0” means
stop, bit 03 = “1” means that the frequency
converter can start if the other start condi-
tions are fulfilled. Note: In parameter 503 it
is selected how bit 03 is connected (gates)
with the equivalent function on the digital
inputs.
Bit 04, Quick stop/ramp:
Quick stop, which uses the ramp time in
parameter 218. Bit 04 = “0” means quick
stop, bit 04 = “1” means that the frequency
converter can start if the other start condi-
tions are fulfilled.
@
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
ASCII
0
/
1
X = Dont care, if P is used in a group of 4 bits, current status is retained. Only the groups with the characters in P are
activated. Bit 10 = 0 signifies no change from current status.
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Byte 8
Byte 7
Byte 6
Byte 5
N
O
F
U
C
T
T
I
O
N
/
R
E
V
E
R
S
I
N
G
S
E
L
E
C
T
S
E
T
-
U
P
1
N
O
F
U
C
T
T
I
O
N
/
C
A
T
C
H
-
U
P
N
O
F
U
C
T
T
I
O
N
/
S
L
O
W
D
O
W
N
D
A
T
A
N
O
T
V
A
L
I
D
/
V
A
L
I
D
J
O
G
2
O
F
F
/
O
N
J
O
G
1
O
F
F
/
O
N
N
O
F
U
C
T
T
I
O
N
/
R
E
S
E
T
R
A
M
P
S
T
O
P
/
S
T
A
R
T
H
O
L
D
R
A
M
P
P
O
S
S
I
B
L
E
Q
U
I
C
K
S
T
O
P
R
A
M
P
F
R
E
E
W
H
E
E
L
P
O
S
S.
O
F
F
3
/
O
N
3
O
F
F
2
/
O
N
2
O
F
F
1
/
O
N
1
Control word
S
E
L
E
C
T
S
E
T
-
U
P
2
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com