VLT
®
Series 3500
87
Control Word, bytes 5 through 8 in the message. The control word is used to send control commands from the controller
to the drive. According to the data format, 1 byte consists of 8 databits, but in the control word only the 4 least significant
bits of each byte are used, which means that ASCII characters from A to O can be used. The table below gives the meaning of
the individual bits in the control word.
@
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
0
/
1
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
Bit 00, OFF1/ON1:
Ordinary ramp stop using the ramp time in parameter 216.
Bit 00 = “0” causes a stop; bit 00 = “1” means that the drive
is able to start if the other conditions for doing so have
been fulfilled.
Bit 01, OFF2/ON2:
Coast stop. Bit 01 = “0” causes a coast t stop; bit 01 = “1”
means that the frequency converter is able to start if the
other conditions for doing so have been fulfilled.
Bit 02, OFF3/ON3:
Quick-stop using the ramp time in parameter 218. Bit 02 =
“0” causes a quick-stop; bit 02 = “1” means that the drive is
able to start if the other conditions for doing so have been
fulfilled.
Bit 03, COAST/ENABLED:
Coast stop. Bit 03 = “0” causes a stop; bit 03 = “1”drive is
able to start if the other conditions for doing so have been
fulfilled. Note: In parameter 503 a choice is made as to how
bit 03 is to be combined with the corresponding function on
the digital inputs.
Bit 04, QUICK-STOP/RAMP:
Quick-stop using the ramp time in parameter 218. Bit 04 =
“0” causes a quick-stop; bit 04 = “1” means that the drive is
able to start if the other conditions for doing so have been
fulfilled.
X = Indifferent; if P is used in a group of 4 bits, the current status is maintained. Only the groups with characters
≠
P are activated.
Bit 10 = 0 means that there is no change from the current status.
ASCII
CONTROL WORD
Byte 8
Byte 7
Byte 6
Byte 5
N
C
C
N
N
D
J
J
N
R
H
Q
C
O
O
O
0
H
H
O
O
A
O
O
O
A
O
U
O
F
F
F
O
O
T
G
G
M
L
I
A
F
F
F
F
I
I
F
F
A
F
P
D
C
S
U
C
C
U
U
2
1
U
K
T
3
2
1
N
E
E
N
N
N
N
S
/
-
C
C
C
O
O
O
C
T
S
/
/
/
/
T
O
O
T
T
T
F
F
T
O
R
T
I
F
F
I
I
F
F
I
P
A
O
E
O
O
O
O
O
O
V
O
M
P
N
N
N
N
N
S
S
N
N
A
/
/
N
/
P
A
/
E
E
L
/
B
3
2
1
R
T
T
/
/
I
O
O
/
S
E
L
E
-
-
D
N
N
T
N
R
E
V
U
U
C
S
R
A
A
A
D
E
P
P
A
L
/
E
R
B
M
R
T
O
S
T
L
P
S
2
1
C
W
V
E
E
I
H
D
A
T
D
N
-
O
L
G
U
W
I
P
N
D