User Guide

Honeywell • 30 COMMUNICATIONS
High and Low limits for the objects are defined in the application. See corresponding applica-
tion for exact limits.
6.3 Control word bits
6.4 Status word bits
6.5 COV functionality
It is possible to subscribe to up to 20 objects for COV monitoring. When the change occurs, the
subscribed object COV indication is sent with new object value.
When you subscribe to objects for COV monitoring, the object are added into background mon-
itoring list that has 150ms update cycle per item. So, the update rate for COV indication is de-
pending on the amoount of subscribed objects. The maximum amount of COV items to
subscribe to is 20. This means that the update rate is 150ms – 3000ms for the whole list.
Table 11. Control Word bits
Bit Name Value = 1 Value = 0 Description
B0
Start/Stop Start request Stop request Start/Stop command to application
B1
Fwd/Rev Reverse
direction
Forward direc-
tion
Controls the direction of motor axis rotation
B2
Fault reset Reset faults No action Command to reset fault
B3-B15
Not used
Table 12. Status Word bits
Bit Name Value = 1 Value = 0 Description
B0
Ready Ready Not ready Indicates whether the drive is ready or not
B1
Run Running Stop Indicates whether the drive is running or
stopped
B2
Direction Counterclockwise Clockwise Indicates the rotation direction of the
motor
B3
Fault Faulted Not faulted Indicates if a fault is active
B4
Alarm Alarm No alarm Indicates if an alarm is active
B5
AtReference True False Reference frequency reached
B6
ZeroSpeed True False Motor running at zero speed
B7-B15
Not used