Communications
vacon • 33
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6
Control word bits
The Control word is composed of 32 bits. Meanings of bits are described below. Unused bits have
to be set to zero.
Table 20. Control Word bits
Table 21:
Bit
Name
Value = 1
Value = 0
Vacon 100 HVAC
Vacon 100
B0 Start/Stop Start request
Stop request
Supported
Supported
B1 Direction
Reverse
Forward
Supported
Supported
B2
Fault
reset
Reset faults
No action
Supported
Supported
B3
Coast
Stop Mode
Stop mode is coast-
ing
Normal stop mode
Supported
Supported
B4
Ramp
Stop Mode
Stop mode is ramp-
ing
Normal stop mode
Supported
Supported
B5
Short
Ramp
Time
Ramp stop time is
shortened
Normal ramp stop
time
Supported
B6
Freeze
Fieldbus
Ref
Drive does not accept
new fieldbus refer-
ence
Drive follows
changes in fieldbus
reference
Supported
Supported
B7
Force
Fieldbus
Ref. to
Zero
Fieldbus reference is
forced to zero
No action
Supported
B8
Force
Fieldbus
Control
Fieldbus control
place is forced
Normal control
place
Supported
Supported
B9
Force
Fieldbus
Reference
Fieldbus reference is
forced
Normal reference
Supported
Supported
B10
Jogging
Refer-
ence 1
Activates jogging ref-
erence 1
No action
Supported
B11
Jogging
Refer-
ence 2
Activates jogging ref-
erence 2
No action
Supported
B12
Quick
Stop
Drive does quick stop No action
Supported
B13-
B31
Reserved Not used
Summary of Contents for 100 HVAC
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